Have a 2000 rancher es. bought new battery but still keeps dying

 

Need to check it with a load tester. That will tell you what going on with the battery and the charging system.

 

Battery load tests fine. No charging output at battery,replaced rectifer from a another 350 but still no output.

 

my dad is having the same problems. this problem occured a year ago and the Honda dealership replaced a part. everything worked great. recently he had to have the engine rebuilt and the battery issue has raised its head again. been through 3 batteries in 6 weeks. all the batteries have been checked and they are fine. the honda shop has a new parts manager and they do not have an answer. they also do not have the record of the part they replaced last year.
someone said the clock is pulling too many amps while the ignition is turned off and there is a recall part to fix this. anyone know of anything to help with this problem. the atv is driven at least one time per week during this time of year and we know it is not a battery issue.

 

here's something to try. disconnect the negative battery cable, and get ahold of a voltmeter that has an DC amperage function. put the wires into the meter right, one will be the common ground for the black wire, and there should be a red one for a 20A function. you might have to consult your meter's manual for specifics.

anyways, after you get the meter figured out, put one lead onto the negative battery post and secure it there, put the other lead on the end of the negative battery cable where it connects to the battery, but have the cable off the battery, so all the power has to go through the meter. if you hooked it up right, you should have some sort of reading. turning the lights on and off (dont try to start it, you'll blow the meter's fuse) should make it go highter and lower. This number represents the amperage that's being drawn out of the battery. Now, make sure the key is off, and all the other stuff is off. I Dont know if Honda has a spec for key-off draw, but you should have very little to nothing. If you have over .25 amps, (yes that's .25, not 25, and it's just a rough guess) then you have an excessive draw. Simply start unplugging things until the meter drops, and you've found the problem.