Testing batteries, before putting 228 cells in the new gokart.
Each battery have to be charged to its max voltage of 3,6V. To make sure that the battery is working correctly. To do that we made a box with aluminium foil in the bottom, placed the batteries with the minus poles down. At the top, we made a plate with aluminium foil to connect the plus poles. To charge we used to adjustable power supplies, each delivering max 20A at 3,6VDC.