Paraboard V3 Parallel Charging Board can be used with common string charge (such as IMAX B8) or separate charge (eg UN A6) charger for six groups of the same type, the number of sections consistent 2-6S battery set can balance charge inparallel. Support six groups 2S, or six groups 3S, or six groups 4S, or six groups 5S, 6S or six groups parallel balance charging. Description: Para Board V3 with self-resettable fuse protection. The PCB board is made from three ounce copper & the main circuit supports up to 40A current. All the balance ports are protected by resettable fuses (also known as polyfuse), and the main circuit is protected by common car fuses that are easily available at local hardware stores. This device is to be used with a balance charger to simultaneously charge multiple lithium batteries in parallel. By this method you can significantly save time on battery charge process. Principles & practices of parallel charging lithium batteries have been well discussed in the forums on RC Groups. This method has been proved to be a safe & efficient way to charge Li Po batteries, & is being widely accepted by more & more RC hobbiests all over the world. Parallel charge can save your time significantly. If you charge two batteries at the same time, the charge current is two times of that you used for a single pack, and you need only Approx. 1/2 of the charge time to charge every battery separately. Similarly, if you charge four batteries at the same time, the charge current is fou