PC 680 is what fits in the /7 frame pre-19xx; then (on the 90:ties modells) there is room for the next sized Odyssey.

I'm amazed at the power from the PC680 - had my R100RT 1981 standing out-doors at winter, -10'C to -15'C for 3 monthes. Didn't touch the bike. A friend came by and wanted to hear how the engine sounded. The engine started at the first or second push of the starter-button!!!
I had not had any charging of the battery what so ever, in a stock R100RT with only a rectifying diod between the regulator and the two blue cables (=> +0.6V).

Any standard acid battery would have been unable to start the engine! Even a car-battery would have failed. The Odyssey had power enough to start the engine several times over !!! I was stunned.
Even when one have swapped the stock leaking generator/alternator for a car generator/alternator the engine would not have started after 2 monthes untouched and non-charged.

Never seen any stock beemers be possible to start without first charging the battery if the bike has been unused for about a month (during summer time).

Amazing battery the Odyssey! -


I whish the old /7 frames had the needed 1-2cm more space that is needed for the larger Odessey, FC925 - 19Ah still is 19Ah even though the starter current obviously is far better than from a Banner 30Ah (53030). I see now that Odyssey have relisted the PC680 to 24Ah (or is that really what then mean???)

ODYSSEY Batteries - Battery Specifications

Banner Batterien > Products > Batteries
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http://www.bannerbattery.com/banner/...otorradWEU.pdf
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Drive Safely,
Albert