PDA battery pack for blackberry. 8100/C-M2 / BAT-11004-001,rechargeable battery,replacement battery capacity: 1800mAh type: Li-ion voltage: 3.7V color: Black size: 54.6*34*10.4 weight:37.5g Multiple safety protection: Overcharge,overdischarge,overcurrent,overtemperature,temperature controls switch, high temperature fuse gives extra protection. Compatible battery models: C-M2 / BAT-11004-001 FitPDAs models: blackberry 8100/8100c/8100r Note: 12 months warranty, passed CE, UL,RoHS, SGS, ATC, REACH, ISO9001:2000, ISO14001:2004