12v 12Ah Lithium LiFePO4 BatteryAbout this item Higher Energy Density and Smaller Size: (1) The energy density of Dobelay's LiFePO4 battery upgrades by 30% and 25% smaller size than other ordinary 12v 12Ah battery; (2) Our batteries are all in line with UL1642 standard, which guarantee the quality of the products to a certain extent; (3) Its size is 5. 6*3. 1*2. 8 in, 144 Wh, very small, please DO confirm the CORRECT size, CORRECT connections system and contacts of those toolds and