The Eneloop rechargeable AAA batteries are the ultimate pack for your power needs. Unlike standard rechargeable batteries, the Eneloop Ni-MH batteries are capable of holding their charge much more efficiently and will retain 70% of a full charge after 10 years unused. This allows you to charge them up to 2100 times regardless of their remaining capacity and be confident they are performing at their peak efficiency. Another key benefit of these batteries is that they work in temperatures as low as -20°C.