Join Date: Mar 2002
Location: Austin, TX, USA
Lead acid batteries shouldn't experience any problem being fully discharged but it probably didn't do it any good. David Pozzi brings up a very good point.
NiCd and other multi-cell packs can be damaged though. Rarely are all the cells 100% equal in strength. During a full discharge, the stronger cells can reverse charge the weaker ones causing permanant damage. To my knowledge, lead acid batteries aren't affected by that.
68 Coupe, 350 w/ Edelbrock Performer RPM heads, cam, intake, 700R4, Dave's small body HEI