Features: Lithium battery protection board is the charge and discharge protection of series lithium battery. With overcharge protection, over discharge protection, over current protection, short circuit protection, temperature protection. All single batteries in the battery pack can be fully charged, effectively improving the charging effect in series charging mode. With a balanced function, same port 50A discharge. High quality battery protection board protect and extend the service life of the battery. Specification: Material: Polymer Weight: 134g/4.7oz Model: HP24SA-P17S Item: 17 Strings same port with a balanced protection board Battery Nominal: 3.7V Battery Type: ternary battery, iron lithium battery Wiring Mode: (as pictures shown) 1.Connect the B-wire to the total negative electrode of the battery first (the B-wire must be short), and then connect the flat cable (before connecting the wiring, the wiring must be removed from the protection plate first). 2. Starting from BCO, BCO is connected to the total negative electrode of the battery, the second row line BC1 is connected to the first battery positive electrode, the third row line BC2 is connected to the second row of battery positive electrode, and the fourth row line BC3 is connected to the third row of battery positive electrode... And so on. 3. After connecting the wiring, measure the voltage between the two adjacent wiring starting from the wiring. The polymer battery voltage should be less than 4V, and the iron-lithium battery voltage should be less than 3.5v. Check and insert the cable. 4. Connect the chargers to C-, and the load to P-. B- line, C- line, P- must use thick line welding, line connection has nothing to do with color, only need the correct order is required. 5. Finally, measure whether the total voltage of the battery is equal to the output voltage of the protective plate. If equal, the protection plate is normal. Package List: 1 x Lithium Li-Ion Battery Protection Board 1、Lithium battery protection board is the charge and discharge protection of series lithium battery. 2、With overcharge protection, over discharge protection, over current protection, short circuit protection, temperature protection.? 3、All single batteries in the battery pack can be fully charged, effectively improving the charging effect in series charging mode. 4、With a balanced function, same port 50A discharge. 5、High quality battery protection board protect and extend the service life of the battery.