Thea and JJ’s bikes both use two 18.5v lipo batteries connected in series for a 37v battery pack. The RC charger, however, needs to charge them in parallel at 18.5v. I made special connectors to switch the batteries between serial and parallel, similar to the lead-acid battery connectors described in a previous post. In this photo the parallel connector is on the top connected to the battery and the serial is on the bottom in my hand. In addition to the power output connectors, lipo batteries have “balance” connectors to enable the charger to manage each cell individually. This photo shows a parallel balance connector I made so that I can charge a 37v battery from one charging port.

Thea and JJ's bikes both use two 18.5v lipo batteries connected in series for a 37v battery pack. The RC charger, however, needs to charge them in parallel at 18.5v. I made special connectors to switch the batteries between serial and parallel, similar to the lead-acid battery connectors described in a previous post. In this photo the parallel connector is on the top connected to the battery and the serial is on the bottom in my hand. In addition to the power output connectors, lipo batteries have "balance" connectors to enable the charger to manage each cell individually. This photo shows a parallel balance connector I made so that I can charge a 37v battery from one charging port.

Thea and JJ’s bikes both use two 18.5v lipo batteries connected in series for a 37v battery pack. The RC charger, however, needs to charge them in parallel at 18.5v. I made special connectors to switch the batteries between serial and parallel, similar to the lead-acid battery connectors described in a previous post. In this photo the parallel connector is on the top connected to the battery and the serial is on the bottom in my hand. In addition to the power output connectors, lipo batteries have “balance” connectors to enable the charger to manage each cell individually. This photo shows a parallel balance connector I made so that I can charge a 37v battery from one charging port.