ym2500 alternator rating

[tmar04]

could someone tell me the output, maximum, in amps for the OEM alternator on Yanmar YM2500? I had mine rebuilt, works fine, just need specs on it for installing additional lighting. thanks to all.

 

[1danny]

could someone tell me the output, maximum, in amps for the OEM alternator on Yanmar YM2500? I had mine rebuilt, works fine, just need specs on it for installing additional lighting. thanks to all.

15 Amp.

Danny

 

[tmar04]

thanks, Danny. Wow! not really much, is it? Terry

 

[LMTC]

No, it's not much. The charging system on these units wasn't designed to do anything beyond re-charge what was lost in starting. We find the output on most units actually measures closer to 14. You can kill a battery with enought starts followed by short run times.

 

[California]

"The battery should be fully charged using a regular charger at least once a month." Source: Operation Manual, YM240.

I run HF's little $4.99 charger overnight if the tractor hasn't been started for several days and dormant voltage shows 12.6 or below. This seems to work; the last battery made it past its eighth birthday.

 

[LMTC]

We strongly encourage customers to start their tractor every couple weeks and just ride around if nothing else. We use some trickle chargers here, and I just ordered our first smart charger....the new, seemingly really nifty technology...to try. Even a good trickle charger can overcharge if left on continuously, and supposedly the smart chargers don't do that.

 

[California]

Even a good trickle charger can overcharge if left on continuously

... and the cheap ones will cook the water out, even if the voltage never exceeds 13.3.

I used to leave the $5 charger on when I would be away for a few days. After a year of that, the battery water level was way down into the plates. I switched to checking it with a voltmeter and charging only when needed.

A 'smart charger' would do this for you automatically.