603450 rechargeable lithium ion polymer battery, nominal voltage 3.7V, full charge voltage 4.2V, capacity 1300mAh, power 4.81AWh, size60×34×5mm(0.262×1.338×0.197inch)(T*W*L), Weight:25g(0.88oz)。 It can prevent overcharge, overdischarge, overcurrent, and short circuit.