Answer:
If you have charged the battery with the Sigma 1 battery charger for a long time and the voltage is still very low, please follow these instructions:
1) Check the battery capacity.
The Sigma 1 battery charger is suitable for batteries with a capacity of 4–32Ah. When charging with the same battery charger, the higher the capacity of the battery, the slower the charge rate and the slower the voltage rise. So, please choose the right charger for your battery.
2) Check the connection.
Check the whole circuit for errors, such as the connection of the clamps to the battery and whether the plug is connected to the AC source. Poor wire contact will reduce the charging efficiency, and the battery voltage will rise slowly. The battery may have been damaged due to which it cannot retain charge and needs to be replaced.
If you still need assistance, please contact us:
If your battery meets the two conditions above and still need further support, please contact our customer support at service@hulkman.com with the following information:
- Order number
- Serial number of your product (Where can I find the serial number?)
- Main specifications of your battery
- Any images or videos for proof of the issue
Our agent will help you troubleshoot, with the guarantee of an exemplary service.
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