I recommend replacing the battery at 7.5 volts.
You will get longer battery life if you unplug your bass after soundcheck.
Roger
Maybe this is a dumb question: if I push to passive mode after soundcheck, will it stop draining battery until I pull it back to active?...
Last gig I forgot to unplug my bass (and I knew that my batteries were near death) so I got out of batts on the second or third music... :/ was it going to last if I got it into passive after soundcheck?...