5-cell 21V battery charge and discharge protection module

the lifespan and health of batteries depend on the amount and timing of their charging and discharging, and the protection module is used to control the voltage applied to the battery. the charge and discharge protection module for the battery is designed to maintain and protect the battery within a specific voltage range and prevents overcharging and excessive discharging.
the 18650 lithium battery charge and discharge protection board is intended for protecting a battery string of five cells with a voltage of 21 volts and a current of 15 amps. it has the capability to protect against overvoltage, overcurrent, and high temperatures, but it does not have the ability to protect against short circuits.
if the module's temperature increases during operation, attention should be paid to the voltage and current rate of the battery, and special care should be taken regarding the battery charging before connecting to the output.
if batteries of different quality grades are used, the output will not be satisfactory, and the string will function according to the voltage of the lower-quality battery.

application of lithium battery protectors:

1. massage battery packs
2. led backup lights
3. electronic devices
4. street light battery packs
5. backup power sources for monitoring

specifications of the 5C Protection board:

1. maximum continuous discharge current: 15 amperes
2. instantaneous charge current: 25 amperes
3. charging voltage: 21 volts
4. maximum charge current: 15 amperes
5. overvoltage detection voltage: 4.28 volts
6. protection delay time: 0.5 seconds
7. discharge detection voltage: 2.55 volts
8. detection time: 250 microseconds
9. current detection: 30 amperes