fujitsu rechargeable battery is made in japan to provide good performance and quality batteries for our customers. batteries are pre-charged to enable customers to use these batteries directly from the pack. rechargeable up to 5,000 times, it is economical & environmental friendly. this battery pack comes with 2pcs of aa size (typ. 1000mah) rechargeable batteries. charges aa and aaa nimh rechargeable batteries at once (2 aa batteries included). long battery life: low self discharge, retain up to 70% of capacity after 5 years of storage. comes pre-charged and ready to use, can be recharged 5000 times with minimal power loss. storage temperature: can be used at temperatures down to -20ºc. best for high drain appliances including - digital cameras, microphones, toys, electric razors, led lanterns & flashlights, gaming devices, portable chargers, wireless computer mice, electric toothbrushes, ic recorders, electronic dictionaries, clocks, remote controls and more.