Cheap And Discounts 1S 3.7V 18650 Li-ion Lithium Battery Charger Protection Board 4.2V charge 12A working current 15A current limit with Steel strip Wholesale. Buy Directly From Merchant FPGA Modules Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.