Feartures of new generation Li-ion EV battery as following: safety, long service life,portable,high ... this product is three times as much as lead-acid battery. Basically do not need to replace.Portable:A third ... of the weight of lead-acid battery, easy to carry and indoor charging.High energy:This ... length Positive10/Negative15 ±1.0 W1TAB distance30±1.0 LiFePO4 Battery 3.2V5Ah