10 Best Rechargeable Batteries for Solar Lights (October 2026)

Solar lights fail in a predictable way. The factory cell fades after a season or two, the light dims or dies by midnight, and the replacement turns out to be the wrong size, the wrong chemistry or too small in capacity to matter. A 1.5V alkaline cell, a lithium cell or a NiCd cell with the wrong characteristics will all behave differently in a fixture built around a 1.2V NiMH cell and a small solar panel. The Best Rechargeable Batteries for Solar Lights depend on three things: whether your fixture takes AA or AAA, how much capacity the panel can realistically refill each day, and how hot, cold and wet the spot is.

The short answer: the Brightown AA 2000mAh suits anyone who wants the longest run time per charge, the Tenergy Solla AA suits lights that sit outdoors through every season, and the EBL Solar AA 1300mAh suits climates with real temperature swings. The rest of the list covers AAA options, larger packs for replacing many lights at once, and lower-capacity cells for basic stake lights.

TL;DR: top picks at a glance

• Best overall: the Brightown AA 2000mAh, a 12-pack with 2000mAh per cell, the highest capacity in this list.
• Best for year-round durability: Tenergy Solla AA, UL Certified NiMH cells with overcharge and over-discharge protection and a claimed 2000-cycle life.
• Best for hot and cold climates: EBL Solar AA 1300mAh, rated from -4°F to 140°F with anti-leak construction.
• Best for AAA lights: Brightown AAA 12-Pack, 12 UL Certified AAA cells rated for up to 1200 cycles.

Best Rechargeable Batteries for Solar Lights Comparison (October 2026)

#	Product	Best for	Capacity	Size and Type	Pack Size
1	Brightown AA 2000mAh	Maximum run time	2000mAh	AA NiMH	12
2	Tenergy Solla AA	Year-round durability	1000mAh	AA NiMH	12
3	EBL Solar AA 1300mAh	Hot and cold climates	1300mAh	AA NiMH	12
4	Brightown AAA 12-Pack	AAA solar lights	1000mAh (as marketed)	AAA NiMH	12
5	Lightalent AA 600mAh	Basic stake lights	600mAh	AA NiMH	12
6	Kruta AA 1600mAh	High-capacity AA	1600mAh	AA NiMH	8
7	Tenergy NiCd AA 24-Pack	Bulk replacements	1000mAh	AA NiCd	24
8	QBLPOWER AA 600mAh	Small AA sets	600mAh	AA NiMH	8
9	QBLPOWER AAA 600mAh	Small AAA sets	600mAh	AAA NiMH	8
10	Kruta AAA 1100mAh	AAA upgrades	1100mAh	AAA NiMH	8

1. Brightown AA 2000mAh: Best 2000mAh NiMH AA Battery for Long Overnight Run Times

• Capacity: 2000mAh per cell
• Cell Type: NiMH, 1.2V
• Pack Size: 12 AA batteries (0.21 kg)
• Cycle Life: Up to 1000 recharges
• Charging: Solar or standard charger, shipped at 30% charge

Pros:

• The 2000mAh rating is the highest in this list, so a fully charged cell can run a light for noticeably longer than the 1000mAh and 600mAh cells.
• A 12-pack covers a full set of garden or pathway fixtures in one purchase.
• The cells charge from the light's own panel or from a standard charger, so they work in existing fixtures with no changes.
• They also suit household devices such as TV remotes, flashlights, wireless mice and game controllers, so spare cells do not go to waste.

Cons:

• The cells ship with only 30% charge, so they need a full charge before they go into a light.
• No temperature range or leak protection is specified, which leaves less reassurance for exposed sites than EBL or Tenergy give.
• The 1000-cycle rating is half the figure Tenergy claims for the Solla.

Best for: Owners of AA solar lights who want the longest possible run time per charge and are willing to charge the cells properly before installing them.

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What sets the Brightown AA 2000mAh apart is raw capacity. At 2000mAh it doubles the Tenergy Solla AA and the Tenergy NiCd AA 24-Pack, and it sits well above the Kruta AA 1600mAh, the next highest. In a fixture where the panel does manage to fill the cell, that translates into more hours of light after dark.

The caveat is charging. A small panel on a stake light supplies limited current, so a 2000mAh cell may not reach full charge in a single cloudy day. Brightown itself recommends a fast charger for these cells, and recharging every three months to keep lifespan up. Treat the first charge in a standard charger as part of the setup, then let the panel maintain them.

This is the wrong pick for lights that face harsh weather without any protection. If the fixture sits in a freezing or very hot spot, the EBL Solar AA 1300mAh states a -4°F to 140°F range and the Tenergy Solla AA is built around seasonal extremes. Those two give more confidence that the cells will survive, even at lower capacity.

2. Tenergy Solla AA: Best UL-Certified NiMH AA Battery for Year-Round Garden Lights

• Capacity: 1000mAh per cell
• Cell Type: NiMH, 1.2V
• Pack Size: 12 AA batteries, each 14.2 x 50mm (7 ounces total)
• Cycle Life: 2000 charge and discharge cycles (claimed)
• Certification: UL Certified, with a 12-month warranty

Pros:

• The 2000-cycle rating is the longest cycle life claimed in this list, and the maker positions the cells for up to 5 years in a solar light.
• Protection against overcharging on long sunny days and over-discharging on cloudy stretches targets the two most common ways solar cells fail.
• The cells ship pre-charged and ready to use, so they can go straight into a fixture.
• The formula is built for freezing and blistering outdoor temperatures, and the cells are free of the heavy metals found in NiCd cells.

Cons:

• At 1000mAh, it gives less run time per charge than the Brightown AA 2000mAh or Kruta AA 1600mAh.
• It is not a replacement for LiFePO4 cells, so lights that use that chemistry need a different battery.
• The 12-month warranty is shorter than the two-year cover on the Kruta AAA 1100mAh.

Best for: Owners of AA solar garden lights that stay outside all year and who value cell longevity and weather tolerance over maximum capacity.

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The Tenergy Solla AA is the longevity pick. Its design addresses two problems that kill cheap solar cells: leakage after weeks of overcharging in summer and deep discharge after weeks of cloud. That makes it a better long-term bet than the Lightalent AA 600mAh or QBLPOWER AA 600mAh, which state no comparable protection.

The trade is capacity. A 1000mAh cell stores half what the Brightown AA 2000mAh does, but in a small solar light that is often enough, because the panel is the real limit on how much energy goes in each day. A cell that lasts five years and does not leak is worth more to many owners than a cell that runs an extra hour.

Skip it if you want the longest possible nightly run time and the fixture has a strong panel. In that case the Brightown AA 2000mAh or Kruta AA 1600mAh gives more stored energy per cell.

3. EBL Solar AA 1300mAh: Best Low-Self-Discharge AA Battery for Extreme Temperatures

• Capacity: 1300mAh per cell
• Cell Type: NiMH, 1.2V, mercury-free
• Pack Size: 12 AA batteries (251 g)
• Cycle Life: 1200 cycles
• Temperature Range: -4°F to 140°F

Pros:

• Low self-discharge technology keeps more than 80% capacity after 3 years, which suits fixtures that sit idle through winter.
• A unique anti-leakage ring and a steel cell casing add protection against leaks inside the light housing.
• The -4°F to 140°F operating range covers most freezing winters and hot summers.
• The 1300mAh rating sits between the Tenergy Solla AA and the Brightown AA 2000mAh, so it balances capacity and durability.

Cons:

• The cells ship only partly charged, so they need a charge before first use.
• The most common complaint is inconsistent charge retention, with some users reporting cells that do not hold a charge.
• The maker recommends its own EBL charger for best results, which adds a purchase for anyone without a NiMH charger.

Best for: Owners of AA solar lights in regions with freezing winters or hot summers who want a mid-capacity cell with a stated temperature range.

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The EBL Solar AA 1300mAh is the middle path between capacity and protection. It stores more than the Tenergy Solla AA while still stating a temperature range and anti-leak construction, neither of which the Brightown AA 2000mAh specifies. Most owners find it works well in solar lights and fits the use as described.

Its mixed feedback is worth weighing. Many users get a long service life and quick recharging, while some report cells that fade fast or never accept a charge. Charging the cells in a proper charger before installing them is the best way to catch a weak one early.

If you want a longer rated cycle life, the Tenergy Solla AA claims 2000 cycles against the EBL's 1200. For a lighter, cheaper set of cells in lights that see little weather, the Lightalent AA 600mAh covers basic needs.

4. Brightown AAA 12-Pack: Best 12-Pack AAA NiMH Battery for Compact Solar Lights

• Capacity: 1000mAh as marketed (check the cell label on arrival)
• Cell Type: AAA NiMH, 1.2V, low self-discharge
• Pack Size: 12 AAA batteries (3.52 ounces)
• Cycle Life: Up to 1200 cycles
• Charging: Solar or standard charger, shipped at 30% charge, UL Certified

Pros:

• Twelve AAA cells give enough spares for several compact fixtures or a rotation of fresh and charging sets.
• UL Certification and low self-discharge add reassurance that the other AAA packs here do not state.
• Up to 1200 cycles means roughly three years of daily use before the cells start to fade.
• Users report they fit small solar lights and even outdoor cameras without trouble.

Cons:

• Capacity is marketed as 1000mAh, but some details point to 600mAh, so confirm the rating on the cell label.
• The cells ship at only 30% charge and need a full charge before use.
• Lifespan reports are mixed, with some cells lasting a few months and others lasting much longer.

Best for: Owners of AAA solar stake lights or small garden fixtures who want a large pack with certification and a stated cycle life.

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Among the AAA options, the Brightown AAA 12-Pack is the one with the most supporting detail. It lists UL Certification, a 1200-cycle rating and low self-discharge, while the QBLPOWER AAA 600mAh states only size and capacity. Twelve cells also beat the 8-packs from QBLPOWER and Kruta for anyone with several lights.

The capacity ambiguity is the main drawback. If your fixture needs the highest AAA capacity, the Kruta AAA 1100mAh states 1100mAh clearly and adds a 2-year warranty. For a straightforward replacement in a basic stake light, the Brightown is an easier fit because of the larger pack.

5. Lightalent AA 600mAh: Best 600mAh AA Battery for Basic Stake Lights

• Capacity: 600mAh per cell
• Cell Type: NiMH, 1.2V
• Pack Size: 12 AA batteries, 1.97 x 0.55 inches each (6.34 ounces total)
• Cycle Life: 1000 cycles
• Warranty: 30 days

Pros:

• A 12-pack of AA cells covers a full set of garden lights at a budget-friendly level.
• The 600mAh rating matches the capacity of most factory cells, so it works as a like-for-like swap.
• The cells charge from solar fixtures or a standard charger.
• Users report they fit outdoor solar lights well and brighten lights that had faded.

Cons:

• Capacity is the lowest tier in this list, so run time trails the 1300mAh EBL and the 2000mAh Brightown.
• The cells ship at 30% charge and should be charged before use.
• The 30-day warranty is the shortest here, and reports of battery life are mixed, with some cells failing to hold a charge.

Best for: Owners of basic AA stake or pathway lights who want a low-cost refresh of tired factory cells.

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The Lightalent AA 600mAh is a straightforward replacement cell for lights that came with similar capacity. It stores far less than the Kruta AA 1600mAh, but for small fixtures with small panels the extra capacity may never fill anyway.

Its manufacturer advises using up the charge each time before recharging, and recharging every three months in storage. If you want stronger durability claims, the Tenergy Solla AA is the better pick, and for more capacity the Kruta AA 1600mAh is the upgrade.

6. Kruta AA 1600mAh: Best 1600mAh AA Battery for Upgrading Weak Solar Lights

• Capacity: 1600mAh per cell
• Cell Type: NiMH, 1.2V
• Pack Size: 8 AA batteries
• Cycle Life: At least 1200 cycles
• Temperature Range: -4°F to 140°F

Pros:

• At 1600mAh it is the second-highest capacity in this list, behind only the Brightown AA 2000mAh.
• It is designed to replace 600mAh, 800mAh and 1100mAh NiCd or NiMH AA cells, so it upgrades most older fixtures.
• The stated -4°F to 140°F range means the cells can charge from the sun even in snow.
• The cells charge from the light's panel or from a universal charger, which helps when sunlight is dim.

Cons:

• The 8-pack is smaller than the 12-packs from Brightown, Tenergy, EBL and Lightalent.
• No UL Certification, anti-leak details or pre-charge level are stated.
• Weight and dimensions are not listed, so check fit in tight battery bays.

Best for: Owners of AA solar lights who want more run time than stock cells give and need only enough batteries for a handful of fixtures.

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The Kruta AA 1600mAh sits between the EBL Solar AA 1300mAh and the Brightown AA 2000mAh on capacity and matches the EBL on temperature range. It is a sensible upgrade for lights that run out before dawn, especially when the original cells were 600mAh.

The gap in detail is the reason it ranks lower. EBL states anti-leak design and low self-discharge, and Tenergy states certification and overcharge protection. If you need those assurances, choose the Tenergy Solla AA or EBL instead.

7. Tenergy NiCd AA 24-Pack: Best Bulk NiCd AA Battery for Replacing Many Garden Lights

• Capacity: 1000mAh per cell
• Cell Type: NiCd, 1.2V
• Pack Size: 24 AA batteries, 14.2mm x 50mm each (13.76 ounces total)
• Cycle Life: Not listed
• Compatibility: Works with brands including Intermatic and Malibu

Pros:

• Twenty-four cells make it the largest pack here, enough to refit a whole yard of lights.
• It is explicitly positioned for popular solar garden light brands such as Intermatic and Malibu.
• NiCd chemistry matches the original cells in many older solar lights.
• The cells also work as standard rechargeable AAs for remotes, wireless mice and RC controllers.

Cons:

• NiCd contains toxic heavy metals that NiMH cells avoid, a point Tenergy itself makes about its Solla line.
• No cycle life, temperature range or leak protection is listed.
• At 1000mAh it stores less than the Brightown AA 2000mAh or Kruta AA 1600mAh.

Best for: Owners of many older AA solar lights that were built around NiCd cells and who want one large pack to replace them all.

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The Tenergy NiCd AA 24-Pack is a volume play. Its capacity matches the Tenergy Solla AA, but the Solla uses NiMH, adds overcharge protection and claims a much longer life. For a single yard of lights, the Solla is the better cell.

Choose this one only when the number of fixtures matters more than chemistry, and you have a pile of lights to refit. For a smaller job, the Brightown AA 2000mAh or EBL Solar AA 1300mAh gives more capacity and a cleaner chemistry.

8. QBLPOWER AA 600mAh: Best 8-Pack AA Battery for Intermatic and Malibu Lights

• Capacity: 600mAh per cell
• Cell Type: NiMH, 1.2V
• Pack Size: 8 AA batteries
• Dimensions: 50mm height, 14mm diameter
• Service Life: Power life up to 25 months

Pros:

• The product is positioned to fit Intermatic and Malibu solar garden lights and replace 600mAh AA cells.
• A stated power life of up to 25 months gives a concrete service expectation.
• Users report brighter light from lights that had dimmed, and good value as an alternative to buying new fixtures.
• It also comes in 20-piece and 4-piece packs, so you can match the quantity to your lights.

Cons:

• Reports on battery life are mixed, with some cells lasting only about a week.
• Opinions on quality and fit are split.
• Capacity is the lowest tier here, and no certification or leak protection is stated.

Best for: Owners of Intermatic or Malibu AA lights who want a small, targeted replacement set at the original capacity.

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The QBLPOWER AA 600mAh matches the Lightalent AA 600mAh on capacity but comes in 8 cells instead of 12. It suits a small number of fixtures, and the stated 25-month life gives a rough replacement schedule.

The variable lifespan reports make it a riskier pick than the Tenergy Solla AA for lights you do not want to revisit. Anyone seeking more run time should step up to the EBL Solar AA 1300mAh or Kruta AA 1600mAh.

9. QBLPOWER AAA 600mAh: Best 600mAh AAA Battery for Small Solar Lights and Remotes

• Capacity: 600mAh per cell
• Cell Type: NiMH, 1.2V
• Pack Size: 8 AAA batteries
• Dimensions: 1.69 inches high, 0.39 inches diameter
• Cycle Life: Not listed

Pros:

• It fills a clear gap for small fixtures that take AAA cells.
• The cells charge from solar lights or a standard charger, with a fast charger recommended for fuller charging.
• The same cells work in TV remotes, wireless mice, flashlights and game controllers.
• It also comes in 12-piece and 20-piece packs for larger jobs.

Cons:

• Capacity is modest at 600mAh, and no cycle life, certification or temperature range is stated.
• The seller stresses these are AAA, not AA, so check your fixture before ordering.
• Detailed buyer feedback is limited, which leaves less evidence of long-term durability.

Best for: Owners of small AAA solar lights who need a modest replacement set and may also use the cells in household devices.

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The QBLPOWER AAA 600mAh is the entry-level AAA choice. It offers less detail than the Brightown AAA 12-Pack and less capacity than the Kruta AAA 1100mAh, but it does cover the basics for small fixtures.

Install the cells in the morning so they charge through the day, and use them down before recharging. If you need more stored energy, the Kruta AAA 1100mAh is the clear step up.

10. Kruta AAA 1100mAh: Best 1100mAh AAA Battery for Warranty-Backed Upgrades

• Capacity: 1100mAh per cell
• Cell Type: NiMH, 1.2V
• Pack Size: 8 AAA batteries (0.09 kg)
• Cycle Life: At least 1200 cycles
• Warranty: 2 years

Pros:

• At 1100mAh it has a clearly stated capacity that is well above the 600mAh QBLPOWER AAA.
• A 2-year warranty is the longest cover in this list.
• The cells are rated from -4°F to 140°F and can charge from the sun even in snow.
• They are designed to replace 300mAh, 600mAh and 1100mAh AAA cells in garden, landscape and lawn lights.

Cons:

• The 8-pack is smaller than the 12-pack Brightown AAA.
• No UL Certification or leak protection is stated.
• The cells are not suited to cellphone use, which limits their versatility to remotes, mice and similar devices.

Best for: Owners of AAA solar lights who want clearly stated capacity and a longer warranty and need only a handful of cells.

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The Kruta AAA 1100mAh is the better capacity choice for AAA fixtures. It nearly doubles the QBLPOWER AAA 600mAh and gives a clearer rating than the Brightown AAA 12-Pack, where the capacity claim varies.

It ranks last because the pack is small and certification details are missing. For a large AAA job, the Brightown AAA 12-Pack gives more cells, and for AA fixtures this list has stronger options in the Brightown AA 2000mAh and Tenergy Solla AA.

Buyer's Guide: How to Choose the Right Rechargeable Battery for Solar Lights

The core trade-off is capacity against durability. A higher mAh rating stores more energy, but a small solar panel can only refill so much each day, and cells that sit in heat, cold and rain need protection more than extra capacity. Match the cell to the fixture first, then to the climate.

Before choosing, check these project details:

• Cell size: AA and AAA are not interchangeable, so check the battery bay before ordering.
• Chemistry: NiMH is the standard for modern solar lights, while NiCd suits only older fixtures built around it.
• Capacity: Higher mAh means longer run time only if the panel can fill the cell.
• Climate: Stated temperature range and leak protection matter most in freezing or very hot spots.
• Quantity: Count your fixtures, since packs here range from 8 to 24 cells.

Cell Size and Fit

AA cells are the common choice for garden stake, path and string lights, and most of this list is AA, including the Brightown AA 2000mAh, Tenergy Solla AA, EBL Solar AA 1300mAh and Kruta AA 1600mAh. AAA cells suit smaller fixtures, and the Brightown AAA 12-Pack, QBLPOWER AAA 600mAh and Kruta AAA 1100mAh cover that need.

Open the fixture and read the cell size printed in the battery bay before buying. Many battery operated outdoor motion sensor lights also take AA or AAA cells, but a 1.2V rechargeable gives slightly less voltage than a 1.5V alkaline, so check that the fixture works on rechargeables.

NiMH Versus NiCd Chemistry

NiMH is the better choice for nearly every solar light today. It avoids the cadmium found in NiCd, and cells like the Tenergy Solla AA and EBL Solar AA 1300mAh add overcharge protection or low self-discharge. The Tenergy NiCd AA 24-Pack remains useful for older fixtures that were designed for NiCd.

Do not swap in other chemistries without checking. Lithium cells such as 18650 batteries run at a nominal 3.7V and are not interchangeable with 1.2V AA or AAA NiMH cells. Stick to 1.2V NiMH unless the light specifically states another type.

Capacity and Daily Charge

Capacity ranges here from 600mAh in the Lightalent AA 600mAh and QBLPOWER cells up to 2000mAh in the Brightown AA 2000mAh. More mAh stores more energy, but only if the panel and sunshine can fill it. Fixtures that sit in shade, such as some of the outdoor lights for front of house, may never fully charge a very large cell.

For small panels, mid-range cells like the EBL Solar AA 1300mAh or Kruta AA 1600mAh are a sensible balance. Use a standard charger for the first full charge, especially with cells shipped at 30% charge like the Brightown and Lightalent packs.

Climate, Leak Protection and Lifespan

Temperature swings and constant moisture are what wear out solar cells. The EBL Solar AA 1300mAh and Kruta AA 1600mAh state a -4°F to 140°F range, and the Tenergy Solla AA is built for year-round outdoor use with overcharge and over-discharge protection. Lifespan claims vary from 1000 cycles to 2000 cycles across the list.

Leaks and corrosion are the most common ways a fixture dies. Check the battery terminals when you swap cells, and wipe off any residue before installing new ones. Cells with anti-leak design, like the EBL, reduce the odds of that damage.

Frequently Asked Questions About Rechargeable Batteries for Solar Lights

Can I use regular rechargeable batteries in solar lights?

Yes, if they are 1.2V NiMH or NiCd cells in the right size, since that is what solar lights are built around. The Brightown AA 2000mAh and EBL Solar AA 1300mAh are examples that charge from the light's panel or a standard charger. Avoid lithium or other chemistries with a different voltage unless the light says it supports them.

Are NiMH or NiCd batteries better for solar lights?

NiMH is better for most fixtures because it avoids the toxic heavy metals found in NiCd and generally offers higher capacity. The Tenergy Solla AA is a NiMH cell with overcharge protection, while the Tenergy NiCd AA 24-Pack is aimed at older NiCd-based lights. Use NiCd only if your fixture was designed around it.

Does higher mAh always mean longer light?

No, because the solar panel limits how much energy goes in each day. The Brightown AA 2000mAh stores the most, but a small panel on a cloudy day may not fill it. Mid-range cells like the Kruta AA 1600mAh or EBL Solar AA 1300mAh often deliver more usable run time in small fixtures.

How often should I replace solar light batteries?

Replace them when the light dims early or fails to last the night. At one charge cycle a day, a 1000-cycle cell like the Lightalent AA 600mAh lasts under three years, and a 2000-cycle cell like the Tenergy Solla AA lasts over five. Real life varies with climate and panel strength.

Do I need to charge new batteries before using them?

Often, yes. The Brightown AA 2000mAh, Brightown AAA 12-Pack and Lightalent AA 600mAh ship at 30% charge, and the EBL Solar AA 1300mAh also ships partly charged. The Tenergy Solla AA ships pre-charged and ready to use.

Can I mix AA and AAA batteries in solar lights?

No, because each fixture is built for one size. Check the battery bay and match it, using AA cells such as the Kruta AA 1600mAh or AAA cells such as the Kruta AAA 1100mAh. The QBLPOWER AAA 600mAh listing specifically warns that its cells are AAA, not AA.

Final Verdict: Which Rechargeable Battery for Solar Lights Should You Buy?

Best Rechargeable Batteries for Solar Lights for most buyers start with Brightown AA 2000mAh: a 12-pack of 1.2V NiMH AA cells with the highest capacity in this list at 2000mAh, charging from the panel or a standard charger. Its main weakness is that it ships at 30% charge, states no temperature range or leak protection, and claims only 1000 cycles.

For alternatives by use case, the Tenergy Solla AA is the choice for longevity, with a claimed 2000 cycles, UL Certification and protection against overcharge and over-discharge. The EBL Solar AA 1300mAh is the pick for freezing or hot climates, with a -4°F to 140°F range and low self-discharge. The Kruta AA 1600mAh is the upgrade for weak lights when you only need a handful of cells.

For specialist needs, the Brightown AAA 12-Pack and Kruta AAA 1100mAh cover AAA fixtures, with the Kruta offering a clearer capacity rating and a 2-year warranty. The Tenergy NiCd AA 24-Pack is for refitting many older NiCd lights at once, while the Lightalent AA 600mAh, QBLPOWER AA 600mAh and QBLPOWER AAA 600mAh are modest replacements for basic fixtures. If you are still undecided, buy the Tenergy Solla AA for a set-and-forget AA light, and the Brightown AAA 12-Pack for anything that takes AAA.