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    Picture of 13S 5A Active Balancer for Lipo/Lifepo4 Battery

    13S 5A Active Balancer for Lipo/Lifepo4 Battery

    1 review(s) | Add your review
    SKU: PH-BB-13S5A
    $119.89
    ● Suitable for various 13-series 5A lithium battery packs. ● Lightweight design saves space and is widely applicable. ● Adopts active balancing method, which can repair voltage difference in time through energy transfer. ● Patent designs bring humanized design, making installation and operation more convenient.
    🚚 Free shipping
    ⏱️ Delivery: 6-12 days
    🔙 30-day Returns
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    Overview

    Cost-effective 13S active battery balancer is specially designed for series-connected lithium-polymer battery packs, with a dynamic balancing current of 0–5A. As a key component paired with the battery management system, it can actively balance the cell voltages in real time, reduce energy waste, and significantly extend the overall service life of the battery pack.

    13S 5A Battery Balance Features

    Feature

    • 3-step installation & wiring for quick and hassle-free setup.
    • Premium craftsmanship inside and out, with robust components and thoughtful design details.
    • 24/7 automatic balancing that maintains battery health in any state.
    • 5A high-efficiency balancing for 5x faster voltage equalization.
     

    Details

    1. Pre-set Screw Mounting Holes: A user-friendly design with pre-drilled screw holes integrated into the balancing module, eliminating the need for additional drilling and significantly improving assembly efficiency.

    2. Fool-proof Locking Cable & Connector: Features a unique fool-proof design that prevents short circuits and balancing failures caused by incorrect insertion. The locking cable ensures a secure, vibration-resistant connection.

     

    13S 5A Active Balancer for Lipo/Lifepo4 Detail

    13S 5A Battery Balancer Dimension

    13S 5A Active Balancer for Lipo/Lifepo4 Dimension

    13S 5A Battery Balancer Structure

    13S 5A Active Balancer for Lipo/Lifepo4 Structure

    13S 5A Battery Balancer Wiring Diagram

    13S 5A Active Balancer for Lipo/Lifepo4 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.

    1. 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+.
    2. 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.
    3. 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-J13-5A
    Battery Pack Type Ternary, Iron Lithium
    Number of Battery Pack Strings 13S (13 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 163*65*21mm
    Application
    Batteries of Energy Storage Cabinet

    Batteries of Energy Storage Cabinet

    Batteries of RV

    Batteries of RV

    Lightweight Lithium Batteries

    Lightweight Lithium Batteries

    Power Lithium Batteries

    Power Lithium Batteries

    FAQ

    Q1: How do active and passive battery balancers differ in efficiency and battery lifespan impact?

    Active battery balancers differ from passive ones in balancing efficiency and lifespan impact in that active balancers redistribute energy between cells to equalize voltages, which is far more efficient—minimizing energy waste and enabling faster balancing, especially for large battery packs; passive balancers, by contrast, simply dissipate excess energy from overcharged cells as heat, which is energy-inefficient and can generate unnecessary heat that may degrade battery cells over time. In terms of battery lifespan impact, active balancers better maintain consistent cell voltages during charge/discharge cycles, reducing overcharging/over-discharging risks and significantly extending overall battery pack lifespan, while passive balancers offer basic voltage regulation but are less effective at preventing long-term cell imbalance, making them more suitable for small, low-drain battery systems rather than high-performance applications like EVs or renewable energy storage.

    Q2: Are active battery balancers compatible with different battery chemistries?

    Active battery balancers are not universally compatible with all battery chemistries, as they are often calibrated to match the unique voltage profiles of specific battery types. Different chemistries (e.g., lithium-ion vs. lead-acid) have distinct voltage characteristics, so a balancer optimized for one type may fail to work effectively—or even cause damage—when used with another. Some advanced models support multiple chemistries for added flexibility, but it is always critical to verify compatibility against the manufacturer’s guidelines before use.

    1 review(s)
    5.0 1
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    Elias | 7/29/2026 1:16 AM
    Game Changer for My 13S DIY Battery Pack!
    Hooked up this 13S 5A active balancer to my LiFePO4 battery bank, and it leveled out cell voltages in no time. The 5A active balance current works way faster than passive BMS balancers. Wiring was super easy thanks to the fool-proof connector, and the pre-drilled holes made mounting clean. Essential gear for any custom power build!
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