This 5s 21V 50A protection board has built in, over-current protection, over discharge protection, overcharge protection, disconnection protection with balanced charging and discharging. It will also turn off the charging to the batteries when at least one cell reaches its maximum voltage. It can be used for Lithium Polymer and Lithium Ion cells only, it cannot be used for Lithium Iron Phosphate batteries.
Please ensure that the cells are identical, preferably from the same batch and have the same state of charge.
Chemistry: Li-Ion, LiPo
Max voltage: 21V
Nominal voltage: 18V
Cell over-charge protect voltage: 4.25V
Cell over-charge protect recover voltage: 4.15V
Cell over-discharge protect voltage: 2.8V
Cell over-discharge protect recover voltage: 3V
Over-charge protect delay: 1.5-2.5S
Over-charge protective current:100A
Over-discharge protective current:100A
Over-discharge protect delay: 0.5-1.5S
Disconnect protect: Yes
Short circuit protect: Yes
Short circuit delay: 100-600 uS
Short circuit protect recover mode: Off load release.
Discharge current: 50A (If you do plan to drive this higher than 15A, we advise you to fit a heat-sink to the FETS with heat transfer compound. Additional cooling required for optimal performance.
Charging current:60A (Please make sure your cells are rated for this)
Balance function: Yes
Ampere Balance (Current): 60mA
Voltage Balance accuracy: 4.14-4.24V
Dimensions: L:61 x W42: x H:3.8mm
This BMS will require a competent and knowledgeable person with an electronic background and skills to install and operate. As these are sensitive products, we will only accept returns if its un-opened and un-used.
Please double check and triple check your wiring, especially the balance/sense wires are correct. Even temporary incorrect wiring may damage this device.