Are you having issues with your batteries? The first step in troubleshooting is to test the batteries to see what their voltage reads. It is important to test each battery independently - so you should remove any connections to other batteries or devices. (See below for expected voltage readings based on the listed volts for your battery.)
If the voltage is lower than expected, you should first check to ensure that your charger is working properly. We recommend using a charger connected directly to only a single battery at a time - this will help isolate issues for that particular battery. Leave the charger connected for 48 hours and then test the battery again.
If the voltage is still low, the battery may no longer be operable. Learn about the expected lifetime of a battery and your warranty options.
Testing Options
Need help testing your battery? Here are some options:
Buy a multimeter
Generally a basic multimeter is available for between $25-35 from your local Walmart or Ace Hardware.
Find local assistance
Your local auto supply store or Batteries Plus may be willing to assist you in testing your battery. We recommend calling ahead and confirming they will test your SLA battery. (Car batteries are not sealed, and local stores may not test non-auto batteries.)
Voltage Charts
Always keep your charge above 40%, and avoid the "Danger Zone". If your battery goes too deep into the Danger Zone, you may not be able to charge it back up to full capacity again.
6 volt battery:
| Voltage | Capacity |
| 6.44 | 100% |
| 6.33 | 80% |
| 6.23 | 65% |
| 6.11 | 50% |
| 6.05 | 40% |
| <6.00 | Danger Zone |
12 volt battery:
| Voltage | Capacity |
| 12.9 | 100% |
| 12.7 | 80% |
| 12.4 | 60% |
| 12,2 | 50% |
| 12,1 | 40% |
| <12.00 | Danger Zone |
24 volt battery:
| Voltage | Capacity |
| 25.8 | 100% |
| 25.3 | 80% |
| 24.8 | 60% |
| 24.4 | 50% |
| 24.2 | 40% |
| <24.0 | Danger Zone |
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