Cheap And Discounts 2S 10A Balance Function 7.4V 8.4V Li-ion 18650 Battery Protection Board DIY BMS PCM PCB Lipo Lithium Cell Pack Charge Module Wholesale. Buy Directly From Merchant Innovation Solutions Tech Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.