This is the ProTek R/C 1S 12-Battery Parallel Charger Board. Do you have a lot of micro flight batteries to charge? The ProTek R/C Parallel Charge Board will charge up to twelve 1S LiPo flight batteries simultaneously. Six charge ports are compatible with MX connectors (also known as pico or ultra micro), used on the mSR and other ultra micro aircraft. Six more charge ports are included featuring 2-pin JST-PH connectors found on Blade, E-flite and ProTek R/C batteries. Your battery charger must be compatible for LiPo chemistry and the parallel charge process only works when charging batteries of the similar age and of similar discharge states. As long as these needs are met, plug in your 1S batteries to the Parallel Charge Board and let the juice flow.
Note: Make sure all the batteries are around the same voltage when starting your charge. Also, either charge one type of battery or the other. Do not mix and match types or MAH ratings.
The Micro ParaBoard is designed for charging multiple small 3.7V Lithium Polymer batteries safely. This board has six sets of Pico (Micro JST) connectors for batteries popular in micro helicopters and planes as well as other ultra micro R/C models. It also has six 2 pin JST-PH connectors for batteries used in other E-flite/Parkzone Micros.