400ex batteries, how long to they last?

[Giz400ex]

How long have your batteries lasted you??

[redrocker]

My girl friends is going on 31/2 years old now
still working strong:cool:

should have no problem as long as generator is charging

[4TraxRider]

Until they stop working:huh

[skemp]

A battery will last a long time, as long as you have relatively low or stock compression. Once you bump up the compression, there is more of a strain on the battery, and you will sometimes have to upgrade to a battery with more cranking amps. After I did my motor work, my battery lasted about another 3 months before it died. I put in a new, stronger battery, and it has lasted another year of plenty of starting, and still works like when it was new.

[DeCap27]

one day hehe













second prowd owner of a
89 fully restored LT500R

[Taco]

mine is 2yrs old and still doing ok.

[Chanman420q]

I dont know mine dies all the time, where can i get a better aftermarket battery?

[Taco]

Originally posted by Chanman420q
I dont know mine dies all the time, where can i get a better aftermarket battery?
Pappy is the battery man

[UglyMotha™]

my 02 stock battery stopped taking a charge after 5 months:mad: musta been a lemon

[Pappy]

the 2 biggest reasons i see for premature battery failure are::

1) the battery was activated improperly

2) the vehicle in which the battery is used ...isnt used enough. all batteries (except lithuim, nickle metal hydride and other new technology chemistry designs) loss 1% state of charge per day when not in use. if that battery has off key drains(lights on..computer devices etc) it can be up to a 10 % drain per day. the size of the batteries used in lawn and garden and atv ...bike...use dont lend themselves to sitting around...GO RIDE THE MOFO:devil or keep a battery tender on it:)

[KY Woods Rider]

My '99 400EX still has the stock battery in it. It ran down once over the winter when I let it set for a while, but it charged right back up and has been working fine ever since. I know it's got to be nearing the end of its useful life though.

Also, my cousin bought a '99 400EX a few months after I got mine and his also has the stock battery in it. He went to a 440 kit over a year ago, which I was sure would kill his stock battery, but it's still working good enough to fire up his 440.

[ridered440]

I have had all sorts of battery problems with mine. Dont know why and cant figure it out! On my 4th one.:grr

[400exdad]

So far, I think the 300 and the 80's batteries lasted about 3 to 4 years before I had to replace them.

[Silverfox@C&DRacing]

Still using the 99 battery and I forgot to turn the key off the other night after I loaded the quad DOH :eek: I kind of got a little butt chewing for that one :(