> Quick answer: Yes, extreme cold like -25°C can damage solar lamp batteries, especially if they’re not designed for such conditions. Lithium-ion batteries may lose up to 30% of capacity in low temperatures [11], and cold can cause permanent damage if batteries are left partially charged [20]. While gel electrolyte batteries are more resilient [25], systems lacking a proper battery management system (BMS) risk failure [13]. Ensure your lamp is rated for sub-zero use to avoid damage.
Cold weather is no stranger to Romania’s winter months, where temperatures often dip below -10°C—sometimes reaching -25°C. If your solar lamp stopped working after the first frost, you’re not alone. Many outdoor solar lights fail under extreme cold, but understanding why can help you choose better equipment and avoid costly replacements.
Why Cold Temperatures Damage Solar Lamp Batteries
Solar lamps rely on rechargeable batteries to store energy collected during daylight hours. However, extreme cold significantly affects battery chemistry and performance. Lithium-ion batteries, commonly used in solar lights, can lose up to 30% of their rated capacity at low temperatures [11]. This reduced efficiency means less power is stored, and the battery may not charge properly even under bright sunlight.
When temperatures drop below 10°C, the risk of battery damage increases [13]. In real-world cases, solar street lights have failed during winter due to outdated PWM controllers and polycrystalline panels, which cause battery starvation—leading to permanent damage when batteries remain partially charged for extended periods [20]. Even well-maintained systems have failed after winter exposure, with AGM batteries dropping to as low as 0°F (-18°C) and becoming severely depleted [5].
How Battery Type and Design Influence Cold Resistance
Not all batteries respond the same to freezing temperatures. Gel electrolyte batteries are known for high performance in deep discharging and extreme temperature ranges [25], making them more resilient than standard lithium-ion options. Yet, even these can suffer if the system lacks proper controls.
A key factor in cold resilience is the Battery Management System (BMS), which maintains voltage balance between cells and prevents overcharging or deep discharge [13,25]. Without a BMS, batteries are more vulnerable to damage in cold conditions, especially when left unattended for months.
| Battery Type | Cold Tolerance | Key Risk in Freezing Temp | BMS Required? |
|–––––––|–––––-|–––––––––-|–––––|
| Lithium-ion | Limited [11] | Capacity loss, permanent damage [20] | Yes [13] |
| Gel electrolyte | High [25] | Reduced efficiency if unbalanced | Yes [25] |
| AGM (Lead-acid) | Moderate [5] | Deep discharge, freezing damage | Recommended |
Real-World Failures and Unexpected Factors
Even in ideal conditions, cold can cause strange behavior. One RV owner reported their charge controller showing low solar input despite bright sun—resolved only after reconnecting the panel, suggesting temperature-related fluctuations in charging efficiency [14].
Another user experienced sudden LED burnout after several months, possibly due to voltage surges triggered by seasonal sunlight changes [4]. While not directly tied to cold, this shows how environmental shifts can stress solar systems.
Additionally, cloudy days reduce charging power, compounding the issue in winter when sunlight is already limited [18]. This reduces battery recharge rates, increasing the risk of deep discharge in cold climates.
How to Prevent Damage in Romanian Winters
To protect your solar lamp from -25°C damage:
- Choose models with gel electrolyte or cold-rated lithium batteries [25].
- Ensure the lamp has a BMS for balanced charging [13].
- Look for IP65 or higher ratings to withstand snow, frost, and wind [12].
- Avoid leaving lights unattended for months during winter.
- Opt for systems tested in real cold climates (e.g., German-engineered street lights [20]).
Key Takeaways
- Cold temperatures below 10°C can severely reduce battery performance [13].
- Lithium-ion batteries may lose up to 30% of capacity at low temps [11].
- Battery starvation from incomplete charging in cold conditions causes permanent damage [20].
- Gel electrolyte batteries and BMS help prevent failure [25,13].
- Choose cold-resistant models rated for extreme climates [12].
References
- [4] LEDs_burning_out_suddenly_after_several_months_of_use_-_Solar_Panels__e8e437b9 — reddit
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# LEDs burning out suddenly after several months of use Source: Blog/Web URL: https://www.solarpaneltalk.com/forum/solar-power-lighting/solar-lighting-for-homes-and-gardens/10251-leds-burning-out-suddenly-after-several-months-of-use Author: Turtlurbo Date: 2013-03-04 Hello, I have a very simple solar setup in my cabin where I power 5 4w mr16 LED lights as well as my laptop and phone charger directly off a 12v battery. There are two 185 w panels so the battery is pretty much always charged fully. Anyway, I've had this setup since December and everything has worked wonderfully up until the last two weeks. My LEDs have been more or less burning out. They flicker a bit between normal brightness and being dim and eventually they stay dim and continue to flicker a little. They are now just about as bright as a birthday cake candle or so. All thar I can think of is that the demise if these bulbs has coincided with longer days and brighter sunshine as winter here in Massachusettts is quickly giving way to spring. I need to replace these bulbs but I'm trying to understand and correct what is wrong with my system first. I'm pretty new to off grid solar and DIY electrical work in general but like I said, it seemed to be just fine for months. Any insight that anyone has would be greatly appreciated. Thank you! -Derek I have a very simple solar setup in my cabin where I power 5 4w mr16 LED lights as well as my laptop and phone charger directly off a 12v battery. There are two 185 w panels
- [5] Solar_system_dead_after_cold_winter_-_Solar_Panels_-_Solar__cdcd08d2 — reddit
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# Solar system dead after cold winter Source: Blog/Web URL: https://www.solarpaneltalk.com/forum/off-grid-solar/off-grid-solar-panel-systems/13941-solar-system-dead-after-cold-winter Author: Cavesson Date: 2014-03-03 Help! My off-grid solar system is dead! Last November, I finally finished installing my system and had it working nicely. In late December, I left the country for a 2 ½ month vacation and returned a few days ago to find the whole system down and batteries severely depleted. The equipment I have is as follows. A True South tower holds 3,825 watts of panels (15 Silfab panels x 255 watts each) and runs 75 feet on AWG 3 cables to the house. Batteries are a rack of 8 Fiamm AGM 12 volts/135 Amp-hour wired to give me 48 volts. It’s all tied together with a prewired Magnum 4448 PAE Power Center with a Midnite Classic 150 charge controller purchased from Wholesalesolar. I left the system up and running in late December and flew off to Thailand for 2 ½ months to stay warm. Temperatures in Southern Ontario dipped to record low temperatures while I was gone and snowfall was heavy. There was no heat in the house so batteries could have gotten down to as low as 0 Fahrenheit but I wasn’t too worried as they were fullly charged when I left. The only utility I left running was my sump pump as I often have trouble with water in the spring in my crawlspace. The crawlspace now has two feet of water in it so I’m thinking that possibly the pump discharge froze and split and the pump k
- [11] Unbound_Solar__Do_lithium_batteries_work_in_extreme_temperatures_DIY_Solar_FAQs__Gxe3icl2UA4 — youtube
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# Do lithium batteries work in extreme temperatures? | DIY Solar FAQs Source: YouTube — Unbound Solar URL: https://www.youtube.com/watch?v=Gxe3icl2UA4 Video ID: Gxe3icl2UA4 Transcript: generated so let's look at like the worst case scenario let's say the power goes up there's a bad storm during the winter I don't know if it's going to be charging to the full capacity because usually in winter months we're getting less Sun hours really the key thing here is that cold cold temperatures are really bad for for Batteries lithium batteries well so what would be the solution like if someone had to walk away from this conversation about batteries and be careful of WEA think about it as as a design factor if you know that your batteries are going to be in a cold environment know that you don't have the full rated capacity to pull out of them at this temperature I can only pull 70% out of these batteries of what they're rated for I'll have add an extra 30% onto the capacity if I plan to use it in those conditions you know when people in those kind of conditions like we were just at a house over by schu's um place and we get the extreme hot and we get the extreme cold we're thinking about like oh we want to put the battery outside but then it's south facing side of the the home where the sun is just pounding on that especially when it's 105 110° so we want to make sure it's in the shape if it is going to be outside youve probably got to put it into some kind of like little insulation bo
- [12] Best_Solar_Lights_for_2026_Tried_and_Tested_-_The_English_Home__445faf4d — blog
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can withstand summer showers, they often won’t be completely waterproof. If you want something you can leave out year-round, look out for those that have a higher IP rating, which have a better chance of withstanding snow, wind and heavy rain – an IP65 rating or higher means they’ll be robust enough to withstand more extreme weather conditions. Caring for solar lights Our experts suggest storing your solar lights away during the darker, winter months to protect them from harsh winter frosts. It’s also recommended that you regularly clean the solar panel to ensure it works at optimum capacity. Do solar lights charge on cloudy days? Even on cloudy days, solar lights can still absorb enough daylight to charge, though their performance may be reduced compared to bright, sunny conditions. Thanks to advances in solar technology, many modern solar lights are designed to work efficiently in low light, ensuring your garden still enjoys a gentle glow even when the sun hides behind the clouds. For the best results, place your lights in the brightest available spot to maximise their charging potential throughout the day. Should garden solar lights be left out in the winter? Garden solar lights are built to withstand the changing seasons, including winter. Most models are made from weather-resistant materials that protect against rain, frost, and cold temperatures. However, to keep them in top condition, it’s a good idea to clean the solar panels regularly and, if possible, store the batt
- [13] Solar_Street_Light_From_Germany__The_Science_of_Solar_Battery_Failure_How_to_Achieve_a_12_Year_Lifespan__lu_n9o8-I80 — youtube
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# The Science of Solar Battery Failure: How to Achieve a 12 Year Lifespan Source: YouTube — Solar Street Light From Germany URL: https://www.youtube.com/watch?v=lu_n9o8-I80 Video ID: lu_n9o8-I80 Transcript: generated The success of a solar street light project largely depends on its battery. However, statistics show that 80% of projects suffer battery failure within just 2 years. Why do solar batteries lose their ability to hold charge so quickly? Today, we will analyze the deep technical reasons behind battery failure and explore how a proper design can solve this problem for good. Most low-cost solar lights use lead-acid batteries or recycled lithium cells. These have a very low cycle life, typically only 300 to 500 full charge cycles. As a result, the batteries often swell or become completely dead even before reaching 2 years of use. This creates a significant financial risk, especially for large-scale B2B projects. Batteries are most heavily affected by temperature. Below 10°C or above 50°C, standard lithium batteries struggle to charge properly. In extreme desert heat or polar cold conditions, these batteries can suffer permanent damage. As a result, the maintenance cost of the entire project increases significantly. A battery pack consists of multiple individual cells. Without a smart BMS, battery management system, the voltage between these cells becomes unbalanced. This imbalance can lead to overcharging or even short circuits. Without a robust management system, it
- [14] RV_solar_set_up_-_strange_issue__b0c919e7 — reddit
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Connected the wires (battery first, while solar panel was covered with a heavy moving blanket, then solar panel). Set the battery type to wet. It registered solar energy (solid red LED) and charging (solid blue LED) BUT was not reading any amps / Ah and was not causing the battery voltage to increase (i.e. was not charging). Yesterday, I disconnected the solar panel, took voltage and amps readings (both where they should be) and when I reconnected it, it fired up and actually was charging the battery – showed 3.1 amps and the Ah started ticking up as time went by. I figured I had it licked. Today I just took a look – it's beaming down bright sunlight and the sun is almost directly overhead, and it's giving me "low solar" again. So I disconnect the panel, take a reading – all good. Reconnect, and it starts working properly again. So I guess my question is – what would cause this thing to read "low solar" when it's clearly about as good as it gets in terms of solar power AND why is it all good when I disconnect and reconnect? Keep in mind, this is a replacement unit they sent me (charge controller) due to this behaviour on the first unit. While it's possible, I'd be surprised if I received two defective units in a row. Also keep in mind, the first one worked great for a few months, then it started doing what I describe above (first unit) and now same thing is happening on the replacement unit. This would suggest that the issue is not the charge controller. But if it's the solar
- [18] Request_for_Guidance_on_MPPT_Circuit_Design_Forum__bdcd255c — authority
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we did the work for Sandia Labs we had a huge solar panel to work with worth a million dollars. When I did my own personal panel it was just about 100 watts or something. I found that the biggest issue with battery charging was to not overcharge the battery, yet get enough current to charge it when it was needed. Cloudy days were the worst, because there was little power available. What I used as a guide was the voltage. If the voltage got too high, I could shut off the current. But then I found that if I selected the right current level, it would never overcharge. This was with a system that did not have to actually draw power from the battery every single day, yours may be different.
- [20] Solar_Street_Light_From_Germany__Why_Solar_Street_Lights_Fail_in_Winter_Ultimate_Technical_Guide_for_B2B_Projects__Ua7I1YwH3DU — youtube
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# Why Solar Street Lights Fail in Winter? (Ultimate Technical Guide for B2B Projects) Source: YouTube — Solar Street Light From Germany URL: https://www.youtube.com/watch?v=Ua7I1YwH3DU Video ID: Ua7I1YwH3DU Transcript: generated You've invested thousands of dollars in a large-scale solar project, but just 3 months later, the streets are dark by midnight. No light, no security. This isn't just a technical glitch, it's a total project failure and a massive financial loss for your company. Why does the battery fail to charge even with expensive systems? Today, we reveal the silent killer, the technical reasons behind charging failure and how to stop it forever. The biggest culprit is the use of polycrystalline panels. With an efficiency of only 17%, they are a disaster for B2B projects. On cloudy days or during winter, these panels fail to generate the minimum voltage required to trigger the charging process. This leads to battery starvation. When a battery stays partially charged for weeks, internal chemical layers build up, causing permanent damage. This is exactly why your lights shut off in the middle of the night. Even if the panel generates some power, an outdated PWM controller wastes 40% of it. It's like trying to fill a bucket with a massive hole in the bottom. Enough energy never reaches the battery. This leaves the streets dark, increasing the risk of accidents and crime. In a professional B2B environment, these small technical mistakes can destroy your company's enti
- [25] Solar_lamp_-_Wikipedia__3c516988 — wikipedia
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could cause problems.[6] A battery is usually housed within a metal or plastic case. Inside the case are electrodes including cathodes and anodes where chemical reactions occur. A separator also exists between cathode and anode which stops the electrodes reacting together at the same time as allowing electrical charge to flow freely between the two. Lastly, the collector conducts a charge from the battery to outside.[7] Batteries inside solar lamps usually use gel electrolyte technology with high performance in deep discharging, in order to enable use in extreme ranges of temperature.[citation needed] It may also use lead-acid, nickel metal hydride, nickel cadmium, or lithium. This part of the lamp saves up energy from the solar panel and provides power when needed at night when there is no light energy available. In general, the efficiency of photovoltaic energy conversion is limited for physical reasons. Around 24% of solar radiation of a long wavelength is not absorbed. 33% is heat lost to surroundings, and further losses are of approximately 15-20%. Only 23% is absorbed, which means a battery is a crucial part of solar lamp.[8] This section controls the entire working systems to protect battery charge. It ensures, under any circumstances including extreme weather conditions with large temperature difference, the battery does not overcharge or over discharge and damage the battery even further.[citation needed] This section also includes additional parts such as light cont
# LEDs burning out suddenly after several months of use Source: Blog/Web URL: https://www.solarpaneltalk.com/forum/solar-power-lighting/solar-lighting-for-homes-and-gardens/10251-leds-burning-out-suddenly-after-several-months-of-use Author: Turtlurbo Date: 2013-03-04 Hello, I have a very simple solar setup in my cabin where I power 5 4w mr16 LED lights as well as my laptop and phone charger directly off a 12v battery. There are two 185 w panels so the battery is pretty much always charged fully. Anyway, I've had this setup since December and everything has worked wonderfully up until the last two weeks. My LEDs have been more or less burning out. They flicker a bit between normal brightness and being dim and eventually they stay dim and continue to flicker a little. They are now just about as bright as a birthday cake candle or so. All thar I can think of is that the demise if these bulbs has coincided with longer days and brighter sunshine as winter here in Massachusettts is quickly giving way to spring. I need to replace these bulbs but I'm trying to understand and correct what is wrong with my system first. I'm pretty new to off grid solar and DIY electrical work in general but like I said, it seemed to be just fine for months. Any insight that anyone has would be greatly appreciated. Thank you! -Derek I have a very simple solar setup in my cabin where I power 5 4w mr16 LED lights as well as my laptop and phone charger directly off a 12v battery. There are two 185 w panels
# Solar system dead after cold winter Source: Blog/Web URL: https://www.solarpaneltalk.com/forum/off-grid-solar/off-grid-solar-panel-systems/13941-solar-system-dead-after-cold-winter Author: Cavesson Date: 2014-03-03 Help! My off-grid solar system is dead! Last November, I finally finished installing my system and had it working nicely. In late December, I left the country for a 2 ½ month vacation and returned a few days ago to find the whole system down and batteries severely depleted. The equipment I have is as follows. A True South tower holds 3,825 watts of panels (15 Silfab panels x 255 watts each) and runs 75 feet on AWG 3 cables to the house. Batteries are a rack of 8 Fiamm AGM 12 volts/135 Amp-hour wired to give me 48 volts. It’s all tied together with a prewired Magnum 4448 PAE Power Center with a Midnite Classic 150 charge controller purchased from Wholesalesolar. I left the system up and running in late December and flew off to Thailand for 2 ½ months to stay warm. Temperatures in Southern Ontario dipped to record low temperatures while I was gone and snowfall was heavy. There was no heat in the house so batteries could have gotten down to as low as 0 Fahrenheit but I wasn’t too worried as they were fullly charged when I left. The only utility I left running was my sump pump as I often have trouble with water in the spring in my crawlspace. The crawlspace now has two feet of water in it so I’m thinking that possibly the pump discharge froze and split and the pump k
# Do lithium batteries work in extreme temperatures? | DIY Solar FAQs Source: YouTube — Unbound Solar URL: https://www.youtube.com/watch?v=Gxe3icl2UA4 Video ID: Gxe3icl2UA4 Transcript: generated so let's look at like the worst case scenario let's say the power goes up there's a bad storm during the winter I don't know if it's going to be charging to the full capacity because usually in winter months we're getting less Sun hours really the key thing here is that cold cold temperatures are really bad for for Batteries lithium batteries well so what would be the solution like if someone had to walk away from this conversation about batteries and be careful of WEA think about it as as a design factor if you know that your batteries are going to be in a cold environment know that you don't have the full rated capacity to pull out of them at this temperature I can only pull 70% out of these batteries of what they're rated for I'll have add an extra 30% onto the capacity if I plan to use it in those conditions you know when people in those kind of conditions like we were just at a house over by schu's um place and we get the extreme hot and we get the extreme cold we're thinking about like oh we want to put the battery outside but then it's south facing side of the the home where the sun is just pounding on that especially when it's 105 110° so we want to make sure it's in the shape if it is going to be outside youve probably got to put it into some kind of like little insulation bo
can withstand summer showers, they often won’t be completely waterproof. If you want something you can leave out year-round, look out for those that have a higher IP rating, which have a better chance of withstanding snow, wind and heavy rain – an IP65 rating or higher means they’ll be robust enough to withstand more extreme weather conditions. Caring for solar lights Our experts suggest storing your solar lights away during the darker, winter months to protect them from harsh winter frosts. It’s also recommended that you regularly clean the solar panel to ensure it works at optimum capacity. Do solar lights charge on cloudy days? Even on cloudy days, solar lights can still absorb enough daylight to charge, though their performance may be reduced compared to bright, sunny conditions. Thanks to advances in solar technology, many modern solar lights are designed to work efficiently in low light, ensuring your garden still enjoys a gentle glow even when the sun hides behind the clouds. For the best results, place your lights in the brightest available spot to maximise their charging potential throughout the day. Should garden solar lights be left out in the winter? Garden solar lights are built to withstand the changing seasons, including winter. Most models are made from weather-resistant materials that protect against rain, frost, and cold temperatures. However, to keep them in top condition, it’s a good idea to clean the solar panels regularly and, if possible, store the batt
# The Science of Solar Battery Failure: How to Achieve a 12 Year Lifespan Source: YouTube — Solar Street Light From Germany URL: https://www.youtube.com/watch?v=lu_n9o8-I80 Video ID: lu_n9o8-I80 Transcript: generated The success of a solar street light project largely depends on its battery. However, statistics show that 80% of projects suffer battery failure within just 2 years. Why do solar batteries lose their ability to hold charge so quickly? Today, we will analyze the deep technical reasons behind battery failure and explore how a proper design can solve this problem for good. Most low-cost solar lights use lead-acid batteries or recycled lithium cells. These have a very low cycle life, typically only 300 to 500 full charge cycles. As a result, the batteries often swell or become completely dead even before reaching 2 years of use. This creates a significant financial risk, especially for large-scale B2B projects. Batteries are most heavily affected by temperature. Below 10°C or above 50°C, standard lithium batteries struggle to charge properly. In extreme desert heat or polar cold conditions, these batteries can suffer permanent damage. As a result, the maintenance cost of the entire project increases significantly. A battery pack consists of multiple individual cells. Without a smart BMS, battery management system, the voltage between these cells becomes unbalanced. This imbalance can lead to overcharging or even short circuits. Without a robust management system, it
Connected the wires (battery first, while solar panel was covered with a heavy moving blanket, then solar panel). Set the battery type to wet. It registered solar energy (solid red LED) and charging (solid blue LED) BUT was not reading any amps / Ah and was not causing the battery voltage to increase (i.e. was not charging). Yesterday, I disconnected the solar panel, took voltage and amps readings (both where they should be) and when I reconnected it, it fired up and actually was charging the battery – showed 3.1 amps and the Ah started ticking up as time went by. I figured I had it licked. Today I just took a look – it's beaming down bright sunlight and the sun is almost directly overhead, and it's giving me "low solar" again. So I disconnect the panel, take a reading – all good. Reconnect, and it starts working properly again. So I guess my question is – what would cause this thing to read "low solar" when it's clearly about as good as it gets in terms of solar power AND why is it all good when I disconnect and reconnect? Keep in mind, this is a replacement unit they sent me (charge controller) due to this behaviour on the first unit. While it's possible, I'd be surprised if I received two defective units in a row. Also keep in mind, the first one worked great for a few months, then it started doing what I describe above (first unit) and now same thing is happening on the replacement unit. This would suggest that the issue is not the charge controller. But if it's the solar
we did the work for Sandia Labs we had a huge solar panel to work with worth a million dollars. When I did my own personal panel it was just about 100 watts or something. I found that the biggest issue with battery charging was to not overcharge the battery, yet get enough current to charge it when it was needed. Cloudy days were the worst, because there was little power available. What I used as a guide was the voltage. If the voltage got too high, I could shut off the current. But then I found that if I selected the right current level, it would never overcharge. This was with a system that did not have to actually draw power from the battery every single day, yours may be different.
# Why Solar Street Lights Fail in Winter? (Ultimate Technical Guide for B2B Projects) Source: YouTube — Solar Street Light From Germany URL: https://www.youtube.com/watch?v=Ua7I1YwH3DU Video ID: Ua7I1YwH3DU Transcript: generated You've invested thousands of dollars in a large-scale solar project, but just 3 months later, the streets are dark by midnight. No light, no security. This isn't just a technical glitch, it's a total project failure and a massive financial loss for your company. Why does the battery fail to charge even with expensive systems? Today, we reveal the silent killer, the technical reasons behind charging failure and how to stop it forever. The biggest culprit is the use of polycrystalline panels. With an efficiency of only 17%, they are a disaster for B2B projects. On cloudy days or during winter, these panels fail to generate the minimum voltage required to trigger the charging process. This leads to battery starvation. When a battery stays partially charged for weeks, internal chemical layers build up, causing permanent damage. This is exactly why your lights shut off in the middle of the night. Even if the panel generates some power, an outdated PWM controller wastes 40% of it. It's like trying to fill a bucket with a massive hole in the bottom. Enough energy never reaches the battery. This leaves the streets dark, increasing the risk of accidents and crime. In a professional B2B environment, these small technical mistakes can destroy your company's enti
could cause problems.[6] A battery is usually housed within a metal or plastic case. Inside the case are electrodes including cathodes and anodes where chemical reactions occur. A separator also exists between cathode and anode which stops the electrodes reacting together at the same time as allowing electrical charge to flow freely between the two. Lastly, the collector conducts a charge from the battery to outside.[7] Batteries inside solar lamps usually use gel electrolyte technology with high performance in deep discharging, in order to enable use in extreme ranges of temperature.[citation needed] It may also use lead-acid, nickel metal hydride, nickel cadmium, or lithium. This part of the lamp saves up energy from the solar panel and provides power when needed at night when there is no light energy available. In general, the efficiency of photovoltaic energy conversion is limited for physical reasons. Around 24% of solar radiation of a long wavelength is not absorbed. 33% is heat lost to surroundings, and further losses are of approximately 15-20%. Only 23% is absorbed, which means a battery is a crucial part of solar lamp.[8] This section controls the entire working systems to protect battery charge. It ensures, under any circumstances including extreme weather conditions with large temperature difference, the battery does not overcharge or over discharge and damage the battery even further.[citation needed] This section also includes additional parts such as light cont