Standard: National Standard Rated voltage (V): 12 Rated capacity (Ah): 20 Battery size (mm): 175*85*154 Reference Weight (kg): 4.81 Outer case size (cm): 38.6*35.6*17.5 Packing Number (pcs): 4 20ft container loading (pcs): 4028 Terminal direction: + - OEM Service: supported Origin: Fujian, China.