5Series Battery Protection BMS PCB Board for 19/21V 20A Li-Ion Lithium Battery Pack
Key features
- •Designed for 5 series Li-ion batteries, widely used for electric power tools
- •Adopt special IC for 5S lithium batteries as processor to detect real-time voltage, charge and discharge current and ambient temperature of each battery, stable performance
- •Multiple protective functions including overcharge protection, overdischarge protection and short circuit protection
- •25uA working current, 6uA quiescent current, low power consumption
- •Help prolong the service life of your battery pack
BrandWalfront
CategoryPassive Components
5Series Battery Protection BMS PCB Board for 19/21V 20A Li-Ion Lithium Battery Pack
List Price: $21.32$19.19DEALYou Save: $2.13 (10%)
Free shippingFree Returns – 30 daysFree Order CancellationSecure Payment2–3 Days DeliveryGet It June 23, 2026In Stock (2)No marketing spamNo account requiredFulfilment by FedEx / Amazon / UPS / ShipwirePayPal / Card Buyer Protection
Customer Reviews
Reviews sourced from verified Amazon purchasers2.4
out of 5
Based on 2 reviews
5★
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4★
50%
3★
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2★
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1★
50%
Waste of money
Bob Compton•July 20, 2018
Did not work for me - Did not protect the batteries - 2 batteries were badly overcharged and ruined.
No instructions,
No instructions,
These would work fine for low power applications
N. Dittes•March 30, 2018
These would work fine for low power applications. Because this device doesn't have balancing built in, any cell mismatches will reduce the capacity of the pack eventually. I tested the features of this and it does control over current and voltage mismatch between cells (like if one is over or undercharged compared to the others). It's just too bad it doesn't have cell balancing.
