... PCM: Li-ion batteryStandard voltage: 3.7VGrade A Li-ion battery cell with high capacity, high energy environmental protection, durable energy ... product, safe and stable, the hi-tech lithium-ion battery undergoes drop test, smash test and puncture test to ensure ... over-voltage, over-current and short-circuit protectionWarranty: 12 monthsOur Battery made by full lithium cell, long standby time and long ...