3.7v 12000mah li-ion battery 18650 li-ion battery pack 1s6p with PCM protection with MSDS,CE,SGS 18650 li-ion battery pack 1s6p 3.7V ... self-discharge rateShort circuit test passed, 3C 10V overcharge test passed, 150C thermal shock test passed,1.2m drop test passed, and moreInternal resistant ...