Features:
1. The product adopts 5 strings of lithium battery special IC as the processor.
2. Real-time detection of each battery's voltage, charging and discharging current, as well as environmental temperature and other information.
3. Realize the protection function of over-charging, over-discharging and discharging over-current to the battery.
4. It can protect the battery from short circuit, charging overcurrent, temperature protection and so on.
5. Stable performance, suitable for a variety of hand drill power tools and other small board.

Product parameters:
Charging voltage: 21V
Single charging voltage: 4.25V
Continuous discharge current: 8-20A
Overcharge single detection voltage: 4.25V
Overcharge protection delay time: 1S
Overcharge single section recovery voltage: 4.13V
Overcharge protection lifting delay: 1mS
Over-discharge single-section detection voltage: 2.8V
Over-discharge protection delay: 1S
Over-discharge single-section recovery voltage: -3.0V
Over-discharge protection release delay: 100±20mS
Over-current detection voltage: 0.4V
Over-current detection current: 30±5A
Over-current detection delay: 1S
Recovery status: automatic recovery
Short circuit protection: short circuit protection
Short-circuit detection delay: 250uS
Short-circuit release delay: 1S
Short-circuit detection voltage: 0.5-0.8V
Recovery status: automatic recovery after disconnecting the load
Over-temperature protection temperature: 70±5°C
Over-temperature recovery temperature: 55±5°C
Power consumption working state: 25uA (25℃)
Sleep state: 6uA (25℃)
Discharge main circuit internal resistance: 30±5mΩ
Temperature protection working temperature: -40℃-85℃ Relative humidity ≤75%
Storage Temperature: -40℃-125℃ Relative Humidity≤75%.
Size: L*W 89*64 (mm)

Product list:
1X module
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  • If the item is defect when you receive it or you are not satisfied with it, please return it within 14 days for a replacement or money back. But the items must be back in factory condition. Please contact us and double check the return address before you return it.
  • If is item is defective in 12 months, you can return it to us. We will send you a new replacement after receiving the defective item.

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