4 series 16.8 V 40A lithium battery protection board with AUTO reset function
Lithium battery protection board series 4 16.8 V 40A with AUTO reset function
Scope of application: lithium batteries with nominal voltages of 3.6 V and 3.7 V (including 18650, 26650, lithium polymer batteries)
Features
- Product dimensions: 46*60*3.4mm
- Weight: 10.3g
- Continuous discharge current (upper limit): 40 A (if the heat dissipation environment is not good, reduce the load current to be used)
- Charging voltage: 16.8 V-18.1 V
- Continuous charging current (upper limit): 20A
- Standard version: suitable for electric drills with a starting current of less than 60A and a power of less than 100W.
- Enhanced version: suitable for electric drills with a starting current of less than 80A and power of less than 135W.
- Balanced version: suitable for electric drills with a starting current of less than 80A and power of less than 135W
Note 1: Correct start-up of the electric drill requires 4 power batteries of 15C-20C or 8 power batteries of 10C-15C (the normal 18650 cannot start the electric drill!!).
Note 2: Wiring 0V, 4.2V, 8.4V, 12.6V, 16.8V strictly according to the diagram, do not intentionally short-circuit.
Note 3: For loads with brush motors, try connecting a non-polar capacitor in parallel with the positive and negative terminals of the motor (resistance voltage greater than 25V, capacity 10uF-100uF) to prevent the reverse peak voltage generated by the motor from interfering with the protection board or breaking the MOS tube.
Note 4: When connecting 4 sets of batteries in series, make sure that the voltage of each set of batteries is the same. If they are not the same, charge each set of batteries separately and then use them in series. During the discharge test, the battery with the fastest voltage drop is a defective battery.
