DYU Electric Folding Bike Spare Battery D3F/D3+/D2/D2F ★【BMS Protection Board】Built-in battery holder, have better shockproof effect. Prevent over charge, over discharge, over current and short circuit and ensure the long life expectancy.★【Design】Easy to take and remove. The LED battery level light can inform you of charging in time. ★【High Quality Lithium ion Battery】This battery's made from lithium ion that keeps a charge and keeps its shelf life longer than lithium iron batteries that tend to die out quickly. The outermost PVC material prevents rain from damaging the battery. Li-ion battery still has a capacity of more than 80% after 1000 cycles.
