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.