Battery box mount under the transmission
Moto Guzzi V7 Sport, 750 S, 750 S3, 850 T, 850 T3, 850 T3 California, V1000 I-Convert, V1000 G5, 1000 SP, Le Mans, Le Mans II, Le Mans CX 100, Le Mans 1000, 1000 SP III, 1000 S, California II, California III, California 1100, California Jackal, California EV, California EV Touring, California Aluminium, California Titanium, California Special, California Special Sport, California Stone-Metal, California Stone-Touring, California Classic, California Touring, and California Vintage models
Thanks to Paul Greenburg for sending me this information via email. In Paul's own words:
This is the under the frame battery box I made for my 850 T (before powder coating). I managed to locate some seamless aluminum battery enclosures that exactly fit an Odyssey PC535. I got a couple of extras if you run across anyone who would want one.