... .Original standard design, selection of high-quality lithium-ion batteries, safe,reliable,stable performace, high capacity.2.A longer standby time ... .Shell body with flame-retardant material, abrasion resistance is high; 4.Built-in overcurrent, overvoltage, the multiple equilibrium ... quality track. 7.Multi-Day Series and Parallel lithium-ion batteries, not only has the overcharge, over discharge, ...