Used 3V Lishen 202AH Lithium Battery Cell (tested 190-200ah) Voltage: 3.2V Capacity: 180-190Ah Chemistry: LiFePO4 Weight: 4.1kg Dimensions: 55x175x225mm (to the top of the terminals) Appearance: Dark blue – Foil shell (foil shells require insulation) The compatible battery link (side to side configuration): https://alt-tech.com.au/themedev/product/bln-battery-link-new-06-20x2x060/