This 44AAAH850 battery is with high capacity, very stable, extremely safe, with very low internal impedance, with long service life over 500 times. All Ni-MH batteries provided by Shida Battery Co., Ltd. is free of any material forbiden by ROHS standard, so they are environmentally friendly. Ni-MH batteries by Shida Battery Co., Ltd. enjoy good reputation amony worldwide customers and this battery get even more good response from our customers. ODM and OEM are warmly welcomed. We are the manufacturer who can offer you competitive prices. Our batteries are with CE, ISO9001:2000, RBRC and other certificates. We now applying for ROHS certificates and will get approval soon.