Aideepen 16.8V 4S 30A 18650 Li-ion Lithium Battery BMS PCB Integrated Circuits Protection Board Cell Balance

Features:
1.4 string 16.8V 40A lithium battery protection board with equalization function
2.Suitable for lithium batteries with a nominal voltage of 3.7V and a fully charged 4.2V (including 1865026650 polymer lithium batteries), capable of carrying electric drills below 170W
3.Simple wiring and convenient use
4.Can improve and extend battery life
5.This product is applicable to electric drills, spray, LED lights, low-power reverse, transformer charging and discharging batteries and other products

Parameters:
Product name: 4-string 16.8V 40A lithium battery protection board
Function: With equalization
Charging voltage: DC 16.8-17.8V
Continuous discharge current: maximum 40A (if the cooling environment is not good, please reduce the load current for use)
Continuous charging current: maximum 20A
Product size: 45 * 60 * 4mm
Applicable options: Suitable for lithium batteries with a nominal voltage of 3.7V and a fully charged 4.2V (including 1865026650 and polymer lithium batteries), capable of carrying electric drills below 170W
For example, if the battery is in 4 series and the connected battery needs to meet a discharge current of 40A, it can be achieved by connecting the battery in parallel or purchasing a battery with a high discharge current. For example, if the battery is 2000mAH and the discharge multiple is 10C, then only 4 strings and 2 parallels are needed, and the maximum current can reach 40A. Stable discharge requires 4 strings and 4 parallels, and attention should be paid to heat dissipation. The discharged battery power will quickly decrease.
4 series of batteries, fully charged, with a voltage of 16.8V and a charging voltage of DC17V~18V. The charging current depends on the connected battery, and the maximum does not exceed 20A.

Matters needing attention
1:Four 10C-20 power batteries or eight 5C-10C power batteries (recommended power battery models: VTC4, VTC4A, VTCSA, VTC6), 0V and 12.6V connecting wires, and copper wires of more than 3 square millimetre (nickel chips cannot be used) are required to successfully start the electric drill.
2:Strictly follow the diagram to wire 0V, 4.2V, 8.4V, 12.6V, and 16.8V. When welding the wires, do not touch any components on the board and do not intentionally short circuit.
3:When welding a battery for the first time or charging, as long as a single battery exceeds 4.2V, the "430" resistor will generate heat and discharge (discharge to around 4.19V to stop heating). If the "430" resistor generates severe heat (too hot to touch), please check if it is connected incorrectly.

Package include:
1X protective board