1998-2001 Honda Fourtrax Foreman TRX450S, TRX450ES Factory Service Manual, Page 341Get this manual
BATTERY ICHIARGING SYSTEM 2BaUery ,overcha.r,ging Iregulated voltage too MghlMeasure the cnarg,ing voltage witil the battery fuilly charged and in good cond ition (page 176)Correct
Faulty battery
Regu lated v,o rtagegreatly exceeds the standard valueChack the continuity between theiround .in and frame of the regu latorrectifier connector {pag.e 117-8),