4P 18650 charger adapter

thingiverse

I created a 4P 18650 cell battery charger holder for my brother, which allows him to charge all four batteries for his dive lamp simultaneously. He will use an intelligent RC-battery charger for this purpose. Important: Before placing the batteries and connecting them in parallel, verify that their voltages are identical with 100mV accuracy. My brother's situation is straightforward since the four batteries are already connected in parallel within the lamp, resulting in a uniform discharge voltage. To build this charger holder, you will need: * Four 1042P 18650 1-cell holders (available at Farnell) * Four M4x6mm screws * A 2-wire cable (select a suitable thickness based on the maximum charge current) * Rubber cushions for the bottom corners * Desired connectors, such as two banana connectors (red/black)