Reference my 800. Has anyone replaced their stock battery with something else for winching? I have used my winch a few times now and have gotten the low voltage warning light every time. Is this normal? My battery tests OK and the charging system is charging just fine. I don't run the winch for more than about 10 seconds at a time. All of the electrical connections are solid and the charging system recovers immediately when I let off of the winch. What is the amperage of the stock battery (mine is not handy to look at)? Thanks.

 

I'm not sure exactly what the amperage is but on my SP400 & SP500, it's barely enough. Same with the stator, its output is just a bit more than needed to run all the electrical functions on the ATV. The winch is definitely a huge drain on these things and I never run mine without the machine running.

 

Most winches state to use a 12 amp hour battery.