but the batteries needs to be removed to be recharged.
what do i need if i want something as simple as plugin a laptop charge to charge up my batteries?
i see all DIY tutorials for eboards but none of them show how to make one similar already built by companies.
You need a 10s BMS. Depending on your setup and how much current your battery can supply (and your motor/vesc can handle) you can get a 40, 50, 60 or 80 amp 10s BMS. You’ll also need a suitable power supply, specifically one that provides 42 volts.