JK-B2A8S - 4-8s 2A Active Balancer
In Stock₹1,764/ PCS
Minimum Order: 1 units
JKBMS JK-B2A8S — 2A Active Battery Balancer for 2~8S Packs
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Technical Specifications
Cell countCell count
Balancing current 2A (constant)
Cell voltage range1V ~ 5V
Voltage accuracy±3mV
External power supplyDC 10~40V (via V+ / V- terminals)
Dimensions136.6 × 85.3 × 20.5 mm
Description
The JK-B2A8S is a compact, high-precision active battery balancer designed for 2 to 8 series battery packs. Using ultracapacitor-based energy transfer technology, it delivers a constant 2A balancing current regardless of the voltage difference between cells — eliminating the energy waste of passive balancing and extending the life of your battery pack.
Quick Specs
Cell count
Cell count
Balancing current
2A (constant)
Cell voltage range
1V ~ 5V
Voltage accuracy
±3mV
Product Overview
Complete product information
The JK-B2A8S is a compact, high-precision active battery balancer designed for 2 to 8 series battery packs. Using ultracapacitor-based energy transfer technology, it delivers a constant 2A balancing current regardless of the voltage difference between cells — eliminating the energy waste of passive balancing and extending the life of your battery pack.
Genuine balancer-jk from Amcell
Key Features
2A constant active balancing current — independent of cell voltage delta
High-precision voltage monitoring — ±3mV accuracy per cell
Supports 2~8S configurations — LiFePO4, Li-ion, LiPo, LTO, lead-acid
Bluetooth connectivity — monitor cell voltages, balancing status, and adjust parameters via mobile app
Optional RS485 or CAN communication (one of two, select at order)
Optional temperature sensor input
LED Bluetooth status indicator
Compact and lightweight — 136.6 × 85.3 × 20.5 mm, 450g
No power-on switch — connects and starts balancing automatically
Applications
The JK-B2A8S - 4-8s 2A Active Balancer is widely used in various high-performance applications:
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Small sightseeing vehicles and e-scooters
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Home energy storage systems (ESS)
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Solar power stations and off-grid systems
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Base station backup power
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Battery pack maintenance and cell recovery
₹1,764/ PCS
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