5S 21V 20A Lithium Battery Charging Protection Board BMS Module NTC Temperature Protection DC Connector For Drill Motor Tools

Charger included : N Battery Included : Yes Accessory Type : Charger Accessories Brand Name : occkic Origin : Mainland China Certification : CE

Features: 1.This product uses 5 lithium battery specific ICs as processors, 2.Real time detection of voltage, charging and discharging current, and environmental temperature information of each battery, 3.Implement overcurrent protection functions for overcharging, discharging, and discharging batteries, 4.It can provide protection functions for battery short circuit, charging overcurrent, temperature protection, etc, 5.Stable performance, suitable for various small boards such as hand drills and electric tools. Parameters: Charging voltage: 21V Single charging voltage: 4.25V Continuous discharge current: 8-20A Overcharge single section detection voltage: 4.25V Overcharge protection delay: 1s Overcharge single section recovery voltage: 4.13V Overcharge protection release delay: 1mS Overdischarge single section detection voltage: 2.8V Overdischarge protection delay: 1s Overdischarge single section recovery voltage: -3.0V Overdischarge protection release delay: 100 ± 20mS Overcurrent detection voltage: 0.4V Overcurrent detection current: 30 ± 5A Overcurrent detection delay: 1s Recovery status: automatic recovery Short circuit protection: With short circuit protection Short circuit detection delay: 250uS Short circuit release delay: 1 second Short circuit detection voltage: 0.5-0.8V Recovery status: Automatically recover after disconnecting the load Over temperature protection temperature: 70 ± 5 ℃ Overtemperature recovery temperature: 55 ± 5 ℃ Power consumption working state: 25uA (25 ℃) Sleep state: 6uA (25 ℃) Internal resistance of the main discharge circuit: 30 ± 5m Ω Temperature protection Working temperature: -40 ℃ -85 ℃ Relative humidity ≤ 75% Storage temperature: -40 ℃ -125 ℃ Relative humidity ≤ 75% Size: length * width 89 * 64 (mm) Package include: 1X module label:yes