10S 5A Battery Energy Active Balancer

SKU: PH-BB-10S5A

$106.79

● 10S 5A high-efficiency energy transfer balancing, with full efficiency. ● 3-step minimalist installation combined with selected core components, making deployment worry-free and reliable in quality. ● 24-hour intelligent protection, automatically repairing pressure differences, ensuring battery safety without worries. ● Compact in size, with a user-friendly design for easy installation.

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Overview
Specs
Application
FAQ
Reviews

Overview

Add a layer of protection to your battery system! This 10S 5A battery energy active balancer is the perfect partner for your battery pack! It delivers maximum balancing efficiency, offers 24/7 intelligent protection, features a hassle-free 3-step installation, and is built with premium components for rock-solid reliability — helping you extend battery lifespan and maximize safety.

Feature

Sturdy and Safe: The insulated base and ABS shell provide a safe and durable user experience.
Intelligent Operation: 24-hour automatic balancing and intelligent repair of pressure differences.
Efficient and Precise: 5A active balancing module improves efficiency with low energy consumption and little heat generation.

Details

Pre-set Screw Mounting Holes: Human-centric design with pre-engineered screw positions eliminates the need for additional drilling, ensuring precise alignment and faster assembly.
Foolproof Clip-on Cables & Connectors: The integrated anti-misinsertion feature prevents short circuits and balancing failures caused by incorrect connections, while the clip-on cables provide a secure, vibration-resistant fit for long-term reliability.

10S 5A Battery Energy Active Balancer Detail

10S 5A Battery Balancer Dimension

10S 5A Battery Energy Active Balancer Dimension

10S 5A Battery Balancer Structure

10S 5A Battery Energy Active Balancer Structure

10S 5A Battery Balancer Wiring Diagram

10S 5A Battery Energy Active Balancer Wiring Diagram

Notes: Please solder and inspect the cable harness independently first. Only after confirming there are no errors should you plug in the balancing module.

Solder the Cable Harness: Start connecting the cable harness from the main negative terminal B-. Then, connect the second black wire (first red wire) to the positive terminal of the first battery string, and continue connecting to the positive terminals of each subsequent battery string in sequence, until the last red wire is connected to the main positive terminal B+.
Measure the Voltage: After connecting the entire cable harness, use a multimeter to check that the voltage of each string and the total voltage are within the normal range (3.0~4.15V for ternary lithium batteries, 2.5~3.6V for LiFePO4 batteries). If the voltage is abnormal, check for soldering issues such as cold solder joints, false soldering, or uneven solder points. Only after confirming the voltage is normal can you plug in the active balancing module.
Start Using: Active balancing module will activate automatically when powered on. If the cable harness becomes disconnected, you will need to power it off and on again to reactivate. The module will automatically start balancing when the voltage of any battery string is ≥3.1+0.1V and stop when it drops to ≤3.0+0.1V. The green indicator light will be on when balancing is active and off when it is inactive.

Specs

Model	PH-J10-5A
Battery Pack Type	Ternary, Iron Lithium
Number of Battery Pack Strings	10S (10 Batteries Connected in Series)
Balance Current	≤ 5A
Balance Mode	Active Equilibrium
Balance On Condition	First Single String Voltage: ≥3.1±0.1V
Balance Off Condition	Flat First Single String Voltage: ≤3.0±0.1V
Working Power Consumption	＜1mA
Sleep Current	＜100uA
Balance Accuracy	±mV
Working Temperature	-20℃~60℃
Harness	Compatible with BMS
Balance Indication Light	Bright: Balance On, OFF: Balance Not On or Fault
Dimension	1636521mm

Application

Batteries of Energy Storage Cabinet

Batteries of RV

Lightweight Lithium Batteries

Power Lithium Batteries

FAQ

Q1: Why is balancing important for battery packs?

Balancing is crucial for battery packs to guarantee optimal performance, safety and longevity. Since individual cells in a pack differ slightly in capacity, internal resistance and voltage characteristics, unaddressed imbalances during charging and discharging can cause some cells to overcharge or over-discharge, which undermines safety and reduces efficiency. Balancing mechanisms (active or passive circuits) redistribute energy between cells to maintain uniform charge and discharge rates, maximizing capacity utilization, preventing cells from operating beyond safe voltage ranges, and reducing cell stress to enhance the pack’s stability and service life—making it essential for high-reliability applications like electric vehicles and portable electronics.

Q2: What are the key differences between active balancing and passive balancing?

Active balancing and passive balancing, two core battery pack balancing technologies, differ primarily in energy handling: Passive balancing dissipates excess energy from high-voltage cells as heat via resistors to equalize voltages, boasting a simple circuit, low cost and easy maintenance but suffering from energy waste and heat generation, making it suitable for small consumer electronics and low-power energy storage systems; active balancing transfers excess energy from high-voltage cells to low-voltage ones through inductors, capacitors or DC-DC converters, achieving high energy efficiency, low heat output and maximum pack capacity utilization, yet it requires complex circuit design, higher costs and precise control algorithms, thus being ideal for high-demand scenarios like electric vehicles and large-scale energy storage systems.

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From: Michael Lee | Date: 5/13/2026 7:15 AM

Finally, My Battery Pack Stays Balanced Properly

I've been running a 36V LiFePO4 battery pack for my solar setup, and this 10S 5A active balancer has been a solid addition. The 5A balancing current is a big step up from the typical milliamps you get from a BMS's passive balancing—it actually does something noticeable. Installation was straightforward, and I appreciate the screw mounting holes (no drilling needed) and the anti-misinsertion cable design. The green indicator lets you know when active balancing is happening, and the 24/7 automatic voltage correction means I don't have to babysit it. It works with both ternary and LiFePO4 cells, and it's compatible alongside your existing BMS. Worth every penny if you want to squeeze more life out of your battery pack.

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