eneloop is a long-life, pre-charged, energy and money saving, recyclable rechargeable battery which can be charged and discharged up to 2100 times. eneloop batteries are pre-charged with solar power and can be used immediately like a normal battery. The packaging is also a practical battery box. Rechargeable up to 2100 times - this protects the environment and your wallet. eneloop batteries have extremely low self-discharge and are always ready for use. Even after 10 years of storage, eneloop has up to 70% of the initial charge. eneloop batteries are universally usable, environmentally friendly and can replace conventional batteries in all devices. They can be charged with standard Ni-MH chargers.