Got to a show on Friday night, plugged in my Wal-Mart battery to my pre-amp... and nada... no power, no juice, nothing when i hit the test button.
When I get home, I plug it into the wall adapter for a mili-second, and the levels on the battery go back to 100% full.
Anyone know what causes this? How to fix it in the field?
Any help or thoughts are appreciated.
Thanks