10A Active Battery Balancer – 12V 24V 48V Battery Pack Balancer

The 10A Active Battery Balancer is an intelligent battery balancing device designed for battery systems consisting of two or more 12V batteries connected in series or or parallel. It continuously monitors 12V battery voltage and automatically transfers energy between batteries to maintain an equal state of charge, preventing voltage imbalance that can reduce battery performance and lifespan. Multiple units can be connected with comunication cable (included) to balance multiples of 2 batteries, ie 2,4,6,8 etc.

Battery packs naturally become unbalanced over time due to variations in battery chemistry, internal resistance, temperature, and age. The KBX102S actively equalises each battery during both charging and discharging, helping maximise battery capacity, improve efficiency, and extend the service life of the entire battery bank.

Featuring a built-in LCD battery monitor, high-precision balancing circuitry, and a high current balancing capability of up to 10A, the KBX102S is ideal for use in solar energy systems, RVs, caravans, marine applications, electric vehicles, UPS systems, mobility equipment, and industrial battery installations.

Key Features

• Designed for 24V battery systems (2 × 12V batteries in series)
• 10A active balancing current for rapid voltage equalisation
• Built-in LCD display provides real-time battery voltage monitoring
• High-precision control chips minimise component variation for accurate balancing
• Ultra-fast balancing speed improves battery performance
• Supports multiple modules for larger battery bank applications
• Durable flame-retardant housing for improved safety and easy installation
• Supplied with 100cm 16AWG extension leads fitted with M8 ring terminals
• Compatible with 12V Lead Acid, AGM, Gel and Lithium batteries connected in series
• Low standby current reduces battery drain
• Reverse polarity protection for added installation safety

Applications

• Solar battery storage systems
• RVs and caravans
• Marine battery systems
• Electric vehicles
• Mobility scooters
• Backup power and UPS systems
• Industrial battery banks

Installation

The KBX102S installs directly across two series-connected 12V batteries.

• Connect the red wire to the positive (+) terminal.
• Connect the black wire to the negative (−) terminal.
• Connect the remaining wires as shown in the wiring diagram for the battery pack.
• Ensure any unused battery wires are safely insulated to prevent short circuits.

Specifications

The KBX102S Battery Equalizer is a simple and effective solution for keeping 12V, 24V or 48V  battery packs balanced, delivering improved battery performance, increased efficiency, and significantly longer battery life with fully automatic operation.