li-ion phone battery for Nokia BL-4J 1.Capacity1250mAh 2 ... ,C-Tick,MSDS 4.Protection:dual IC Detailed Description of li-ion phone battery for Nokia BL-4J1. Battery model: ... , over-current and short-circuit protection.5. Cell chemistry PCM: Li-ion battery.6. Safe and Stable: Hi-tech lithium bettery ... .For more information , please feel free to contact us! replacement li-ion phone battery for Nokia BL-4J