Question about Craftsman 21 HP 42 in. Zero Turn Tractor Mower - CA Model

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Have a battery charger with 2 amp. or 12 amp. setting and switch for maintenance free or alternate type. What do I charge my 21 hp craftman mower at? How long should it take for full charge?

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Hi,
Put it on maint. free and 12 amp for about 8 hours and you will be good to go...

heatman101

Posted on Oct 09, 2010

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not exact, to charge apropiate needs 10% more than nominal voltage. if not, will not charge the batteries.
And the charger its very important because you can over charge the battery.An example,if you have a 12 Amps Batteries each one if you put it in series will be 24 Volts.at parallel conection will be 12 volts but the double of Amps.
At serial connection will be 12 Volts the amps will be the same but the volts will be 24.

The charger at 12 Volts must be 13.8-14.5 DC Volts and divide the Amps in Hours.
The charger at 24 Volts must be 26-28 Volts. to charge well.

The charger for 12 amps batt example must charge 2 amps per hour at 6 hours = 12 Amps.(2 Amps Charger by 6 Hours Charging= 12 Amps.(Fully Charged.
3 Amperes Charger needs 4 Hours to charge 12 amps Batt.
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All of this is at DC Current.

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Why doesn't craftsman mower tractor yt 3000 charge?


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Battery does not charge on my 15 hp sears rider mower


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The charger that comes with Homelite 24v mower is crappy. I've gone thru 3 of them. What's a better alternative?


I have used a DieHard portable battery charger (model 200.71222) for several years to recharge my 24-volt, 18-year old Craftsman mulcher, model 315.370270. This is after the on-board charger died. I just disconnect the link between the two 12-volt batteries and remove all other battery connections. Then connect the charger leads to the positive and negative terminals on one of the batteries before plugging in the charger. I put the settings on the charger at conventional low maintenance and 2 amps. Charge one battery and then the other (assuming you have two 12-volt sealed lead acid batteries like my mower). I use binder clips 530-t.jpgfrom an office supply store to hold the battery wires on the terminals when I'm mowing...makes it simpler to remove and reattach for charging instead of the nut-and-bolt connectors that came with the mower.

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I have a Husqvarna 21 HP Lawn Tractor and I went out to start it and the battery was totally dead, so I jump started it. It started but died out a couple times. So I got it going again and drove it up the...


The electric clutch needs full power in the battery to stay engaged. I would recommend you check your charging system before replacing the battery. Put a digital volt meter across the + and - terminals of the battery and while running at about 1/2 throttle you should be over 13 volts DC. Probably around 13.5 or so. If not you have a charging problem. Lawn mower batteries I have seen seem to last only 2-3 years. I would also recommend a trickle charger for extended periods of non use. Don't forget the Stabil also.

Hope this helps.

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Battery won't stay chaRGED NO AMPS SHOWING ON AMMETER.CAN BE STARTED BY JUMP AND WILL RUN BUT STOP AND WILL NOT START AGAIN WHATS MY PROBLEM?


it could be a fuw things doing this,,,
check that the engine is charging the battery up when its running,,use a volt meeter across the battery it should show 13.5 volts if its charging up ok,,,,

then check that the voltage regulator is not draining the battery when the engine is not running,,,

fully recharge the battery first then check that it holds this charge,, take off the battery lead and leave the mower for a week or so if the battery has gone flat then you need a new battery!! winter time kills off batterys if there not kept on trickel charge,,,
there's a tip,,,,buy a solar charger,,,and hook it to the battery when your not using the mower,,it will keep the battery toped up for free???

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1 Answer

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