I left the key on overnight on my 800. It was dead the following morning. I have cycled it with the trickle charger a couple of times and after setting a few hours it will still only show 12.5 volts. The manual says that it requires a few more hours on the charger but I am pretty sure that I am maxed out. What kind of charge are your batteries holding? I was thinking about getting a spare anyway, I was just wondering what "normal" is for these machines. Thanks.

 

My 600 is running 12.2-12.5 average but never an issue starting with the original battery

 

Running should be over 13. For a full charge just sitting should be 12.8-13 according to manual.

 

Honestly have never checked, but I know my bigger truck battery, once the overcharge from the alternator wears off sits around 12.6-12.8 so I would imagine that an ATV battery, being just a smaller lead acid battery would be about the same.

 

Thanks guys, mine charges at 14 even when running. I have read the manual. I was just wondering what the average owner was seeing with the engine off and after the quad had sat for more than a few hours.

 

Just for heck of it went out measured mine. Not been ran since Sunday and was sitting at 12.57. Started and went up to 14.4.

 

Thanks upnort, that is what I was after.