Best rechargeable AA batteries for solar lights (2026)
Updated 2026-11-05
Short answer. For outdoor solar lights, replace the cells with 1.2 V NiMH AA in the 1,000–1,300 mAh range: our pick is Tenergy Solla 1000 mAh ($16.99; buy: https://dealectric.com/go/tenergy-solla-aa-1000mah-12-pack), rated 2,000 cycles (EBL's solar AA: 1,200) and shipped charged. It is a narrow win: EBL's 1,300 mAh 12-pack costs less on Amazon. Bigger is not better: a small path-light panel may put only about 150 mAh into a cell on a sunny day, so 2,000 mAh cells can sit half-empty.
The light, not the battery, usually sets the runtime: a cell only gives back what the panel put in that day, and in winter every NiMH gives shorter nights (eneloop is rated to -4 °F with reduced runtime). Lights built for 3.2 V LiFePO4 14500 cells cannot take any AA.
- Tenergy Solla 1000 mAh, $16.99. Buy: https://dealectric.com/go/tenergy-solla-aa-1000mah-12-pack
- Tenergy Solla Premium 1300 mAh, $18.99. Buy: https://dealectric.com/go/tenergy-solla-premium-aa-1300mah-12-pack
- EBL Solar AA 1300 mAh, $9.99 on Amazon (checked 2026-11-12). Buy on Amazon: https://www.amazon.com/dp/B0BKSC8P5X?tag=dealectric-20
Published 2026-11-05 · prices checked 2026-11-05 to 2026-11-07.
| Model | Capacity | Rated cycles | Rated temp | Ships charged | Pack | Price | Code |
|---|---|---|---|---|---|---|---|
| Tenergy Solla 1000 mAh Buy: https://dealectric.com/go/tenergy-solla-aa-1000mah-12-pack | 1,000 mAh NiMH | 2,000 | -4 to 122 °F | Yes | 12 (24 for $25.99) | $16.99 | No discount code applies. |
| Tenergy Solla Premium 1300 mAh Buy: https://dealectric.com/go/tenergy-solla-premium-aa-1300mah-12-pack | 1,300 mAh NiMH | 2,000 | -4 to 122 °F | Yes | 12 (8 for $14.49) | $18.99 | No discount code applies. |
| EBL Solar AA 1300 mAh Buy: https://www.amazon.com/dp/B0BKSC8P5X?tag=dealectric-20 | 1,300 mAh NiMH | 1,200 | -4 to 140 °F | No, charge first | 12 | $9.99 on Amazon (checked 2026-11-12) | No discount code applies. |
| Panasonic eneloop 2000 mAh | 2,000 mAh NiMH | 2,100 | to -4 °F | Yes | 8 | $23.99 on Amazon (2026-11-05) | Not sold through Dealectric; listed for comparison. |
| Brightown 2000 mAh | 2,000 mAh NiMH | 1,000 | Not stated | 30% | 12 | $9.99–11.99 on Amazon (2026-11-05) | Not sold through Dealectric; listed for comparison. |
| Lightalent 600 mAh | 600 mAh NiMH | 1,000 | -4 to 122 °F | Not stated | 12 | $9.98 on Amazon (2026-11-05) | Not sold through Dealectric; listed for comparison. |
Rows marked with a code and buy link are products Dealectric lists: the price was verified on the brand's own US store on 2026-11-07 and the code is tested daily in that brand's cart; the date shown is its last pass (last check 2026-11-13). The other rows (Brightown, Lightalent, Panasonic) are included so the comparison is complete; their figures and prices were read from the makers' own US pages on 2026-11-05 and are not re-checked daily. The buy links are affiliate links: they open the brand's official US store at no cost to the shopper, and the commission pays for the testing; see the disclosure. Rows priced "on Amazon" are sold on Amazon.com: their buy link is an Amazon Associates link that opens the Amazon listing, and the price is Amazon's, read on the date shown. Their specs were read from the makers' own US pages. As an Amazon Associate, Dealectric earns from qualifying purchases.
Why new batteries still don't last the night
- The panel is the limit. One measured path light charged at about 20 mA, about 150 mAh on a sunny day; its owner's 600 mAh replacements never filled (All About Circuits forum). A bigger cell helps only if the panel can fill it, or if it banks several sunny days.
- Dead cells in the pack show up in reviews of every brand here. Charge new cells once in a wall charger and swap a weak one before blaming the light.
- NiCd lights: NiMH 1.2 V replaces NiCd 1.2 V; keep NiCd only where the light's manual asks for it.
- Replace every 1–2 years. Cheap solar lights have no overcharge protection, so cells in full sun age fastest.
When a bigger cell is worth it
Lights with larger panels in all-day sun can fill 1,300 mAh (Tenergy Solla Premium). If you top cells up on a wall charger, eneloop's 2,000 mAh cells are the best AA made, at about three times the price per cell.
Sources
- Tenergy Solla 1000 mAh AA, 12-pack — power.tenergy.com
- Tenergy Solla Premium 1300 mAh AA — power.tenergy.com
- Tenergy Solla on Amazon (ratings, Q&A on LiFePO4 lights) — www.amazon.com
- EBL Solar AA 1300 mAh on Amazon — www.amazon.com
- All About Circuits: 20 mA solar-light charger — forum.allaboutcircuits.com
- AnandTech forum: capacity depends on sunlight — forums.anandtech.com
- BudgetLightForum: batteries for solar lights — budgetlightforum.com
- Hackaday: solar lamp teardown — hackaday.com
- Panasonic eneloop specifications — www.panasonic.com
Published 2026-11-05; figures for other brands read on 2026-11-05; our prices verified 2026-11-07. Corrections welcome at [email protected] or /feedback.