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Voltage Regulator Output
#1
A
amentac
A
amentac
I have a 25HP intek vtwin in my Craftsman tractor, model number 445777. I recently installed an electric winch and replaced the regular battery with a car battery to provide more power for the winch. I also replaced the ammeter (it was broken) with a voltmeter to check that the battery is charged. I placed the voltmeter across the battery terminals. I'm noticing the voltage varies from 14.3V up to 18V, it does this for a few minutes at each of those levels. I've never had problems with charging with the previous battery, so maybe this is the way it works? 18V seems quite high for charging a battery though.
#2
StarTech
StarTech
These engines comes with multiple stator configs. Some are unregulated and others have regulators. If your engine indeed has a regulator then the output voltage should never rise above 16vdc. If it is the regulated regulated version Briggs does not give the DC output voltages, just the maximum amperage out which is usually 3 amps max.
The regulated systems normally have enough amperage to run most small ATV winches and still keep the battery charged. Output max amperage can be anywhere from 5 amps to 20 amps depending on the setup.
The regulated systems normally have enough amperage to run most small ATV winches and still keep the battery charged. Output max amperage can be anywhere from 5 amps to 20 amps depending on the setup.
#3
Hammermechanicman
Hammermechanicman
The stator and stock voltage regulator are not designed to charge a car battery or the current draw of a winch. The regulator is probably damaged.
#4
StarTech
StarTech
Hammer just be aware the the JD 345 mowers used regular car batteries and the Kawasaki regulators are never damaged by them and the regulators are same used on the smaller lawn mower batteries.The stator and stock voltage regulator are not designed to charge a car battery or the current draw of a winch. The regulator is probably damaged.
#5
I
ILENGINE
I
ILENGINE
Most people don't know what the amp requrements for even small winches are. Even a 2000# atv winch at zero load will exceed the charging systems of most ATV's or other equipment. And just at 500# pull can be 25-30 amp draw. Full load will be close to 120 amp. the regulators will overheat and be damaged in a short period of time. Even people that are using large electric winches for recovery shut off their vehicles when pulling to prevent damaging the alternator on their vehicles.The stator and stock voltage regulator are not designed to charge a car battery or the current draw of a winch. The regulator is probably damaged.
#6
Hammermechanicman
Hammermechanicman
Yes a lot of Deere stuff use automotive type batteries but he says it is a Briggs Intek. I have seen stators and regulators fried with added lights and winches on lawn tractors.Hammer just be aware the the JD 345 mowers used regular car batteries and the Kawasaki regulators are never damaged by them and the regulators are same used on the smaller lawn mower batteries.
#7
A
amentac
A
amentac
Thanks, I appreciate the replies. I think I'll put the old battery back in the tractor and use the car battery to power the winch separately.
Better be safe than sorry!
Better be safe than sorry!
#8
B
bertsmobile1
The charging system should be able to handle recharging the battery after you have used your winch , depending upon the size of the winch and how often you use it .
A starting battery can provide amps up to the CCA rating of the battery which should be around 250 to 330 for 1 minute or any multiple of that , like 125 A for 2 minutes , 62.5A for 3 minutes etc etc etc.
The limiting factor is the gauge of the wires.
When the winching is over your mower will see a flat battery , 1/2 flat battery etc and will run as long as required to return the battery to fully charged.
Now if you only winch occasionally no real problem
If you do it every day then you will burn out the alternator because it is always running at full output and it is not designed to do that.
If you run the winch with the engine running the alternator will see a massive load & try to provide the power and again burn out in a very short time.
If you talk to an auto electrician then they will tell you the fastest way to wreck your alternator is to run the vehicle with a flat battery .
People who do not try & maintain their batteries over winter & jump start on their first mow will bring their mower to me as it stalls the instant they turn the blades on so they think there is a problem with the PTO clutch .
In reality the alternator is overloaded & can not keep up ( in theory it should be able to but in practice it can't ) so voltage drops & carb solenoid shuts down .
I have probably replaced 100 or so burned out stators & every time the owners admitted they had been running with a flat battery ( because mower batteries are more expensive than car batteries )
B
bertsmobile1
I think you missed the point .Thanks, I appreciate the replies. I think I'll put the old battery back in the tractor and use the car battery to power the winch separately.
Better be safe than sorry!
The charging system should be able to handle recharging the battery after you have used your winch , depending upon the size of the winch and how often you use it .
A starting battery can provide amps up to the CCA rating of the battery which should be around 250 to 330 for 1 minute or any multiple of that , like 125 A for 2 minutes , 62.5A for 3 minutes etc etc etc.
The limiting factor is the gauge of the wires.
When the winching is over your mower will see a flat battery , 1/2 flat battery etc and will run as long as required to return the battery to fully charged.
Now if you only winch occasionally no real problem
If you do it every day then you will burn out the alternator because it is always running at full output and it is not designed to do that.
If you run the winch with the engine running the alternator will see a massive load & try to provide the power and again burn out in a very short time.
If you talk to an auto electrician then they will tell you the fastest way to wreck your alternator is to run the vehicle with a flat battery .
People who do not try & maintain their batteries over winter & jump start on their first mow will bring their mower to me as it stalls the instant they turn the blades on so they think there is a problem with the PTO clutch .
In reality the alternator is overloaded & can not keep up ( in theory it should be able to but in practice it can't ) so voltage drops & carb solenoid shuts down .
I have probably replaced 100 or so burned out stators & every time the owners admitted they had been running with a flat battery ( because mower batteries are more expensive than car batteries )
#9
A
amentac
A
amentac
The car battery would not be connected to the tractor at all. I'll connected to the winch when I need to and re-charge on the bench.
tnx
tnx
#10
smalltimerpm
smalltimerpm
Most bring the mowers to you due to stall because alternator cannot carry the load? I actually thought pto worked off of battery.? I've came across several that are able to crank and run once jumped due to dead battery but pto would not engage at all cause the battery would not take a charge.I think you missed the point .
The charging system should be able to handle recharging the battery after you have used your winch , depending upon the size of the winch and how often you use it .
A starting battery can provide amps up to the CCA rating of the battery which should be around 250 to 330 for 1 minute or any multiple of that , like 125 A for 2 minutes , 62.5A for 3 minutes etc etc etc.
The limiting factor is the gauge of the wires.
When the winching is over your mower will see a flat battery , 1/2 flat battery etc and will run as long as required to return the battery to fully charged.
Now if you only winch occasionally no real problem
If you do it every day then you will burn out the alternator because it is always running at full output and it is not designed to do that.
If you run the winch with the engine running the alternator will see a massive load & try to provide the power and again burn out in a very short time.
If you talk to an auto electrician then they will tell you the fastest way to wreck your alternator is to run the vehicle with a flat battery .
People who do not try & maintain their batteries over winter & jump start on their first mow will bring their mower to me as it stalls the instant they turn the blades on so they think there is a problem with the PTO clutch .
In reality the alternator is overloaded & can not keep up ( in theory it should be able to but in practice it can't ) so voltage drops & carb solenoid shuts down .
I have probably replaced 100 or so burned out stators & every time the owners admitted they had been running with a flat battery ( because mower batteries are more expensive than car batteries )
#11
B
bertsmobile1
So if the battery is only partially charged or flat when the PTO is engaged you get a voltage drop so the solenoid closes
All depends upon which charging system is fitted but even the 10A systems can not keep up with most PTO's
Some rectifiers get so hot they have burned my fingers .
B
bertsmobile1
The battery & the alternator are connected in parallelMost bring the mowers to you due to stall because alternator cannot carry the load? I actually thought pto worked off of battery.? I've came across several that are able to crank and run once jumped due to dead battery but pto would not engage at all cause the battery would not take a charge.
So if the battery is only partially charged or flat when the PTO is engaged you get a voltage drop so the solenoid closes
All depends upon which charging system is fitted but even the 10A systems can not keep up with most PTO's
Some rectifiers get so hot they have burned my fingers .
#12
Hammermechanicman
Hammermechanicman
Most PTO clutches draw around 4 to 6 amps. 50 to 70 watts of power. This is a continuous draw. A starter motor amp draw with no load is around 50 amps and under a load over a 100 amps. Around 1200 watts of power. This is a very short term draw. The battery in a mower is an energy storage tank that is designed for large current draws for a very short period and then be recharged fairly quickly. The charging system on MOST engines is designed to provide enough power to operate the PTO clutch AND replace the relatively small amount of energy the battery used in starting the engine. This takes a few minutes depending on the battery and charging system. If the battery is low on charge and a jump pack is used to start the engine and the PTO engaged the charging system will be putting out its max current for a much longer time like an hour or so trying to power the PTO and put a lot of energy into the discharged battery. Most small engine stators are not designed to do that and they overheat and get fried and sometimes the regulator also. I have seen the AC wires from stators burned off the insulation from this.