Features 1、Battery Charger Module: 4S Type C to 16.8V step up lithium battery charger converter board, perfect battery accessory. 2、Stable Performance: Lithium battery charger board has strong adaptability to input power and stable performance. 3、Safety Protection: Lithium battery module has battery short circuit protection, over voltage protection, low voltage protection. 4、Premium Material: Lithium battery module is made of premium PCB material, which is durable, wear resistant and has excellent contact performance. 5、Convenient to Install and Operate: Lithium battery charger module is small and compact in size, easy to install and operate. Specification Item Type: Battery Charger Module Material: PCB 4 Cell(4S) 16.8V Version Package List 2 x Battery Charger Module