I have a 2008 RXTX which has been flashing a low battery warning when I used it. Then it wouldnt start so assumed the battery needed replacing so got a new one.

Filled the new battery with acid and charged it for about 3 hrs and it still gives ChkEng warning on the display and wont start. Just coughs and revs show round 300rpm. Can you tell me if a ski would give the ChkEng warning for a low charged battery or might this be something more complex.

BTW last time I used the ski it ran fine and had no warnings at all.

Thank you for any info.