JST Parallel Charger 6 Plugs Cable, 1 male 6 females JST connection. Charge your JST-terminated batteries with this JST Parallel Charge Cable. This harness makes allows you to charge up to 6 batteries with JST connectors together in parallel. To calculate the proper input voltage simply choose from 1 to 6 same voltage and mah batteries, and add the Milli amp hours of all the batteries together.