The American Conservatives article A small but very useful article for anyone who wants to fix their amp’s batteries.
The article explains how to check the battery and ensure that the battery is still capable of producing enough voltage to run your amp.
The amp’s voltage is a function of the amp’s power supply, so the amp needs to be tested and then adjusted to make sure it’s capable of keeping up with your amp’s speed and volume.
If the amp still doesn’t work properly, you can do something as simple as replacing the battery.
Some amps have a “fail-safe” battery that prevents them from getting too hot to operate.
If your amp still won’t work, you’ll need to replace the battery yourself.
There are also some simple voltages to check for that will prevent you from damaging the amp.