2006-2009 Honda TRX680 (TRX 680 FA-FGA) Factory Service Manual, Page 509Get this manual
BATIERYCHARGING SYSTEM SPECIFICATIONS ITEM
Battery
(YTX20L-BS)
Capacity
Current leakage
SPECIACATIDNS
12V-1BAh
1 mAmaximum 13.0 13.2 Balow 12.3 1.8 AJS 10 h
Voltage 120CIWFj Charging current
Alternator
Fully charged Needs charging