In the old music store days, I tried the 'tongue tester' on the batteries that came with the BOSS pedals, just to check before they went out the door to their new home. They used to straighten my eyebrows, could not understand why a BOSS battery was noticeably stronger. One day during a phone conversation with Roland service, I asked about this, and the guy says, 'Oh yeah, they charge them up to 10, 10.5 volts so they'll last on the shelf a long time.' Bought a battery tester the next day . . . .
J o e y