battery equalizer/balancer

Suitable for 12V batteries and under.

Description from internet:

Features

- Keeps batteries in optimal condition

- Up to 10Amp inter battery balancing

- Ensures longer service life of batteries

- Highly recommended for batteries in series

- 36V/48V Active balancer

- Easily connect to batteries with included wiring

Specifications

- Can be connected to 24V, 36V or 48V battery banks (2, 3 or 4 in series)

- Monitors each battery voltage

- On deviation of more than 10 mV, the higher voltage battery will be discharged to the lower voltage batteries until all the battery voltages are equal

- Battery banks of 6V/9V/12V can be used

- IP67 rated

- No external power supply is required

- Reverse polarity protection

- Optimization current-controlled between 0 to 10 A

- Low power consumption of 5mA (12V batteries)