TinkerToy wrote:I have recently installed a PC 625...no case modification but iI did modify the positive terminal...The PC 625 has better specs,as I read them, the difference in the PC625 vs the PC535 is the height, about 3/4 of an inch taller There is plenty of seat base clearence although one needs to slightly move {bend} the "hooks" that secure the front of the seat. [
Hi,
I looked at the PC 625 before I chose the PC 535. After I got the measurements I found a paperback book that was as thick as the difference between the OEM battery and the PC 625. I put it on the battery and tried to put the seat back on. It wouldn't go back on. I chose not to bend the hooks since the PC 535 fit and was already more than the bike needed. "Matters of taste ..." and all that.
I also worried about replacing a 14 amp-hour battery with an 18 amp-hour battery. I wasn't clear if, or for how long, the charging system could handle it. The PC535 is rated at 14.8 amp-hours, something I was willing to risk.
I also want to say that using bent copper tubing is a really good idea. Replacing the terminals with a threaded standoff (or fabricating one) is also good. I just bent and re-installed the old terminals because it let me finish with the parts on hand with no cutting or drilling, and no irrevocable decisions. When I get a band saw and a drill press, I'll probably fabricate threaded standoffs.
For the record, the bike still cranks hard, even for multi-start-short-hop rides. I took the bike off the charger as soon as the weather got over 40°F at night. No Problems to report.
Liam