Is it possible to equalize batteries with mixed capacities?

Choosing the Right Equalization Method

When dealing with batteries of mixed capacities, a technique called “parallel equalization” can be employed. This involves connecting the batteries in parallel and applying a higher voltage to the system, with the goal of equalizing the charge levels of the batteries. The voltage boost required can be calculated by taking the difference in the charge levels of the batteries and applying it to the weakest battery.

Applying the Equalization Charge

To apply the equalization charge, the system should be isolated from the grid or other external power sources. The batteries can then be charged to the desired level, using the calculated voltage boost to ensure that the weakest battery is brought up to the desired level. It’s essential to monitor the charging process closely to prevent overcharging, which can reduce the lifespan of the batteries.

Monitoring and Control

The equalization process should be monitored closely, with voltage and current levels being tracked in real-time. This will allow for adjustments to be made as needed to ensure that the equalization process is completed safely and effectively. Additionally, the system should be equipped with a control unit that can automatically shut off the equalization charge if any safety thresholds are exceeded, preventing damage to the batteries or other components.