The recommended charging current for a new lead acid battery is usually around 10-20% of its ampere-hour (Ah) capacity. For example, if you have a 100Ah battery, the ideal charging current would be between 10-20A. Can I use a higher charging current to charge my new lead acid battery faster?
To determine an appropriate charging current for a lead acid battery, divide its Ah rating by 10. For instance, a 100 Ah battery should be charged at approximately 10 amps per hour. This is one way to calculate the charging rate.
The number of amps you should use to charge a 12V lead acid battery depends on its capacity. As a general rule, you should use a charging current of 10% of the battery’s capacity. For example, a 100Ah battery should be charged with a current of 10A.
The charging process involves converting electrical energy into chemical energy within the battery cells. The appropriate charging current ensures that the battery receives the necessary energy without causing damage or premature wear. To determine the right charging rate for a new lead acid battery, several factors need to be considered.
It is generally recommended to charge a sealed lead acid battery using a constant voltage-current limited charging method with a DC voltage between 2.30 volts per cell (float) and 2.45 volts per cell (fast). For AGM sealed lead acid batteries, the ideal charging current is 25% of the battery capacity indicated by Ah (Ampere Hour).
Customers often ask us about the ideal charging current for recharging our AGM sealed lead acid batteries. We have the answer: 25% of the battery capacity. The battery capacity is indicated by Ah (Ampere Hour). For example: In a 12V 45Ah Sealed Lead Acid Battery, the capacity is 45 Ah.