Maximize the Lifespan of Your Battery Bank

When two 12V batteries are connected in series to create a 24V (or 48V) system, their internal resistances inevitably differ. Over time, this causes a severe voltage imbalance during charging and discharging. One battery becomes chronically undercharged (leading to fatal sulfation), while the other becomes overcharged (leading to gassing and drying out). The HA01 Battery Equalizer solves this problem permanently by actively transferring current from the higher voltage battery to the lower one, ensuring both remain perfectly balanced.

Active 5A Compensation for Peak Performance

Unlike passive balancers that simply burn off excess energy as heat, the HA01 utilizes an active energy transfer system. It continuously monitors the voltage of both batteries. When it detects a voltage difference, it initiates a compensation current of up to 5A, transferring energy until the voltages are identical. This keeps your battery bank operating at peak efficiency and saves you hundreds of dollars in premature battery replacement costs.

Scalable for 36V and 48V Systems

Building a larger power wall? The HA01 is highly scalable. While one equalizer balances a 24V system (2x 12V batteries), you can easily wire multiple units together for larger banks. Use two equalizers for a 36V system, or three equalizers for a 48V system. It features intuitive LED indicators (LED A and LED B) to show you exactly which battery is currently being compensated.

💡 Pro Tip from Our Technicians

"A common misconception is that connecting an equalizer will instantly balance your batteries. In reality, if you connect a 12V battery and a 10V battery, it may take 3 to 7 days for the HA01 to fully balance them. For the fastest and best results, we highly recommend fully charging both 12V batteries individually before wiring them in series. If you are unsure about how to scale this for a 48V solar setup, drop by our Sham Shui Po store! Our team at Sun Cheong Computer Co. Ltd. has been building custom power solutions for over two decades and can draw out the exact wiring diagram for you."