High-concerned chemical : none
Charging Current : 40A
Usage Scenario : Energy Storage BMS,3C Digital BMS
Certification : NONE
Balance Function : Active Balanced BMS
Handware or Smart : Handware BMS
Charge and Discharge Port : Common Port BMS
Type : LIFEPO4 Battery BMS
Origin : Mainland China
Brand Name : occkic
Function : Overcharge Protection,Over Discharge Protection,Overcurrent Protection,Short Circuit Protection
Product name : 4 strings of 16.8V 40A lithium battery protection
Function : with balance
Charging voltage : DC 16.8-17.8V
Continuous discharge current : maximum 40A
Features:
1.4 strings of 16.8V 40A lithium battery protection board with equalization function
2. Suitable for lithium batteries with a nominal voltage of 3.7V and a full charge of 4.2v (including 18650, 26650, polymer lithium batteries), and can be used with electric drills below 170w
3. Simple wiring, easy to use
4. Can improve and extend battery life
5. This product is suitable for electric drills, sprayers, LED lights, low power reverse, transformer charging and discharging batteries and other products
Product parameters:
Product name: 4 strings of 16.8V 40A lithium battery protection board
Function: with balance
Charging voltage: DC 16.8-17.8V
Continuous discharge current: maximum 40A (if the heat dissipation environment is not good, please reduce the load current)
Continuous charging current: up to 20A
Product size: 45*60*4mm
Applicable options: suitable for nominal voltage 3.7V, fully charged 4.2v lithium battery (including 18650, 26650, polymer lithium battery), can be used with an electric drill below 170w
For example: the battery is in 4 series, and the connected battery needs to meet the discharge current of 40A, which can be realized by connecting the battery in parallel or purchasing a battery with a large discharge current. For example, if the battery is 2000mAH and the discharge rate is 10C, then only 4 strings and 2 parallels are needed, and the maximum current can reach the discharge current of 40A. Stable discharge requires 4 strings and 4 parallels, and attention should be paid to heat dissipation, and the power of the discharged battery will drop rapidly.
4 strings of batteries, actually fully charged, the voltage is 16.8V, the charging voltage is DC17V~18V, the charging current depends on the connected battery, and the maximum does not exceed 20A.
Precautions
1: Four 10C-20 power batteries, or eight 5C-10C power batteries (recommended power battery models: VTC4, VTC4A, VTCSA, VTC6) are required to successfully start the electric drill, 0V and 12.6V connecting wires, use 3 square meters Copper wire above mm (nickel sheet cannot be used).
2: Wiring 0V, 4.2V, 8.4V, 12.6V, 16.8V strictly according to the diagram. Do not touch any components on the board when welding the wires, and do not intentionally short circuit.
3: When welding the battery for the first time or charging, as long as a single battery exceeds 4.2V, the "430" resistor will heat up and discharge (discharge to about 4.19V and stop heating) if the "430" resistor is seriously heated (too hot to touch) ), please check whether the wiring is wrong.
Product List:
1X protection board
label:yes
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