If you're looking for a reliable and long-lasting battery for your outdoor solar lights, the 2/3 AA NiMH Button Top Battery is an excellent choice. These rechargeable batteries are made of Nickel Metal Hydride (NiMH) chemistry, which offers a high capacity of 200 mAh and a voltage of 1.2 Volt.

One of the greatest benefits of this battery is that it's rechargeable and can be recharged up to 1000 times, saving you money in the long run. Additionally, the battery features no memory effect, meaning it can be charged and discharged repeatedly without affecting its performance or capacity.

With a length of 29 mm (1.2") and diameter of 14 mm (0.55"), the 2/3 AA NiMH Button Top Battery is small and compact, making it ideal for outdoor solar lights that require a compact and reliable power source.

Overall, if you're looking for a high-quality and rechargeable battery for your outdoor solar lights, the 2/3 AA NiMH Button Top Battery is an excellent choice that offers reliable performance, a long-lasting service life, and the convenience of rechargeability.