4S 30A 14.8V Li-ion Lithium 18650 Battery BMS Packs PCB Protection Board with Balance Ship to worldwide via post air mail with tracking number. :This board is 4 string 3.7V lithium battery protection board.High current protection board,continuous 30A current,with balance circuit.PCB board size: 56*45*3mmConnection:P+ P- is the abbreviation of PACK+ PACK-,that is,the output of positive and negative polesB+ B- is the abbreviation of battery,which is the positive and negative pole of the batteryPackage include:1pc 4S 30A 14.8V Li-ion Lithium 18650 Battery BMS Packs PCB Protection Board Balance SHIPPING1. Ship to worldwide. If send by post air mail usually to Europe within 15 days after sent out. 2. Orders processed within 24-48 hours of payment verification.3. The images shown are the actual item and photographed by myself. 4. SERVICE TRANSIT TIME is provided by the carrier and excludes weekends and holidays. Transit times may vary, particularly during the holiday season.5. If you have not received your shipment within 30 days from payment, please contact us. We will track the shipment and get back to you as soon as possible with a reply. Our goal is customer satisfaction! PAYMENTS1. Payment must be made within 4 days of product closing. (Non-payment may result in a UPI (Unpaid Item) being put on your account. .