Author Topic: OT - How to Hook Up a 12 Volt Pump?  (Read 2701 times)

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Offline Evo160K

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OT - How to Hook Up a 12 Volt Pump?
« on: Thursday, November 05, 2009. 09:16:16 AM. »
Just bought a 12 volt 2.1 gal/min liquid pump sprayer with a 25 gallon tank.  It usually attaches into an all terrain vehicle or a tractor and runs off of the 12 volt system.  I don't have either vehicle.  Can this pump be powered by some type of transformer hooked into a 120 volt source?  If not, what's the best way to power it?  Thanks very much.

Offline Scurvy

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Re: OT - How to Hook Up a 12 Volt Pump?
« Reply #1 on: Thursday, November 05, 2009. 09:22:34 AM. »
How are you going to cart it around, the back of your truck? Then it would be easy to get a 12' cord and connector that plugs into your power outlet/cigar lighter.
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Offline Evo160K

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Re: OT - How to Hook Up a 12 Volt Pump?
« Reply #2 on: Thursday, November 05, 2009. 09:46:14 AM. »
I was planning to put it on a garden cart and pull it around the yard.  I'm going to spray herbicide on the roof.  It would be easy if I could use an extension cord and plug it into the outside 120 volt outlets.  Thanks very much for your reply.

Offline ederdelyi

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Re: OT - How to Hook Up a 12 Volt Pump?
« Reply #3 on: Thursday, November 05, 2009. 09:55:31 AM. »
You'd need a 12v dc power supply ... transformers only transform or step up/step down ac. What's the current draw on the pump? It's likely that a 12v car battery will power it long enough to do the job without running out of charge. Be aware that most car batteries are not deep cycle batteries and may not take kindly to a deep discharge. Might not want to use your wife's car battery for the job :>)

Offline Tsani

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Re: OT - How to Hook Up a 12 Volt Pump?
« Reply #4 on: Thursday, November 05, 2009. 10:08:55 AM. »
You can buy a 120vac to 12vdc inverter. Basically like a battery charger but for continuous heavy duty use.
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Online Coyote

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Re: OT - How to Hook Up a 12 Volt Pump?
« Reply #5 on: Thursday, November 05, 2009. 10:09:12 AM. »
This pump I looked up draws 8 amps. That's quite a bit. You might be able to use an old PC power supply. They have a 12 volt supply that would be high enough. A battery would probably be best though.

# Max. flow: 2.1 GPM, Max. pressure: 60 PSI
# 12 Volts, 8 Amps
« Last Edit: Thursday, November 05, 2009. 10:12:35 AM. by Coyote »
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Offline hotroadking

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Re: OT - How to Hook Up a 12 Volt Pump?
« Reply #6 on: Thursday, November 05, 2009. 10:42:49 AM. »
Hope you have a strong cart
1 gallon is 8.34 pounds
25 gallons is 208.5 pounds,
plus cart
plus pump
plus battery
plus container holding the water.

Might find pulling it around to be a bit much

Might want to fill it only half way
and check the weight limit on
the cart.

Offline tinkerman

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Re: OT - How to Hook Up a 12 Volt Pump?
« Reply #7 on: Thursday, November 05, 2009. 12:05:45 PM. »
Borrow a riding mower or ATV to pull the cart and then you would have a power source.


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Offline bouncingVman

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Re: OT - How to Hook Up a 12 Volt Pump?
« Reply #8 on: Thursday, November 05, 2009. 12:34:54 PM. »
An automotive battery charger might work in a pinch... Probably better to have a battery to hook up the charger to, and then run the pump from that combination.

Just some ideas...

t
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Offline Scurvy

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Re: OT - How to Hook Up a 12 Volt Pump?
« Reply #9 on: Thursday, November 05, 2009. 01:10:42 PM. »
The ol' talegate is lookin' better n better. Well, here is what I'd do then, since I already have a power plug on the bike for my battery tender and electric vest:
Wrestle cart into position, filling it *after* you get it where you need it to be. Ride motorcycle over to it, plug pump into electrical outlet on bike. Substitute car/truck for motorcycle if yo don't have an outlet on yours.
'05 FXST, '10 FLHTP, '77 FXE
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Offline Evo160K

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Re: OT - How to Hook Up a 12 Volt Pump?
« Reply #10 on: Thursday, November 05, 2009. 01:18:16 PM. »
Good information, thanks all.

The cart is pretty hefty, use it for carrying firewood.  I can partially fill the tank, like hotroadking said, if necessary or if it's difficult to pull.  There's a concrete walk or driveway most of the way around, so hopefully it'll pull okay.  Coyote, thanks for looking that amperage up, I'll also see if I can find an old PC power supply, I appreciate it.  I'll check out a 120vac to 12vdc inverter like Tsani mentioned, that would be simple.  If not maybe a battery with a 6 A charger attached like bouncingVman said.  If all else fails I'll ask my neighbor to bring over his riding mower, he's a good guy, doesn't ride a harley, but still a good guy.

Offline hotroadking

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Re: OT - How to Hook Up a 12 Volt Pump?
« Reply #11 on: Thursday, November 05, 2009. 01:55:14 PM. »
heck if you have a sidewalk, hook up the HD and pull it around LOL  it has 12v and you'll just need to get an adapter to work off the cig lighter from Harbor Freight...

Offline Evo160K

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Re: OT - How to Hook Up a 12 Volt Pump?
« Reply #12 on: Thursday, November 05, 2009. 02:01:37 PM. »
Hotroadking, I did considered your and scurvy's suggestion.  I just wasn't sure how long "Blue" would have to sit still and run, unknown territory, I was concerned about overheating.

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Re: OT - How to Hook Up a 12 Volt Pump?
« Reply #13 on: Thursday, November 05, 2009. 02:07:06 PM. »
I was concerned about overheating.

You should switch to Amsoil!  :hyst:
I feel the need... for twisties with speed.

Offline Evo160K

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Re: OT - How to Hook Up a 12 Volt Pump?
« Reply #14 on: Thursday, November 05, 2009. 02:58:12 PM. »
Coyote, that's funny, thanks for the laugh!!..   :hyst:  :hyst:

Offline FSG

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Re: OT - How to Hook Up a 12 Volt Pump?
« Reply #15 on: Thursday, November 05, 2009. 03:12:56 PM. »
Quote
If all else fails I'll ask my neighbor to bring over his riding mower, he's a good guy, doesn't ride a harley, but still a good guy.

The simplest solution, cost ?, perhaps a few   :beer:

Offline kybagger

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Re: OT - How to Hook Up a 12 Volt Pump?
« Reply #16 on: Thursday, November 05, 2009. 06:19:43 PM. »
buy a small 12v battey jump box would fit in the cart w/o much problem

Offline Evo160K

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Re: OT - How to Hook Up a 12 Volt Pump?
« Reply #17 on: Thursday, November 05, 2009. 09:35:34 PM. »
kybagger, would that jump box put out enough amperage, need about eight, to keep the pump going?

Offline ederdelyi

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Re: OT - How to Hook Up a 12 Volt Pump?
« Reply #18 on: Friday, November 06, 2009. 01:51:21 AM. »
You can make this as simple/cheap or as complicated/expensive as you want ...
Most car batteries are rated at 70 amp/hr. That's with a 3.5 amp load. So, even allowing for the additional heating effects of an 8 amp load the battery should be able to power the 8 amp load for around 6 hrs before it needed to be recharged. How much do headlights draw and how long does it take to discharge the battery if you leave them on?  How long do you figure it's going to take to spray the roof and will the pump be working at full capacity the whole time?

Offline guido4198

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Re: OT - How to Hook Up a 12 Volt Pump?
« Reply #19 on: Friday, November 06, 2009. 02:51:54 AM. »
Regular auto battery charger has worked for me in similar situations.

Offline ederdelyi

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Re: OT - How to Hook Up a 12 Volt Pump?
« Reply #20 on: Friday, November 06, 2009. 03:05:27 AM. »
>>Regular auto battery charger has worked for me in similar situations<<

Sure. Most good ones have a couple of charge rates to select from ... 2 amp and 15 amp are common. The battery alone suggestion was to eliminate the "umbilical" cord and make the unit more self contained, but either one or both together should work. Most chargers do not put out pure DC, but for this application it's good enough.

Offline Ardy

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Re: OT - How to Hook Up a 12 Volt Pump?
« Reply #21 on: Friday, November 06, 2009. 04:37:48 AM. »
I'd go with the neighbor idea. Only cost to you is a couple a gallons of gas and a couple a six packs. Go ask him and see if he has any ideas.

I've got great neighbors. Seems all one of us has to do is get out the Skill saw and give it a few whirls and the guys start showing up to see what's going on. Pounding a few nails seems to work the best though, the sound carries better. You had better have :beer: because a 1 hour job seems to last all afternoon and you get all the help you need.
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Offline ederdelyi

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Re: OT - How to Hook Up a 12 Volt Pump?
« Reply #22 on: Friday, November 06, 2009. 04:46:12 AM. »
Well, Hell, I thought he just wanted to "get 'er done", not turn the thing into a gala ball :>)

As Roseanne Roseannadanna used to say "Never mind".

Offline Ridetard

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Re: OT - How to Hook Up a 12 Volt Pump?
« Reply #23 on: Friday, November 06, 2009. 06:20:17 AM. »
A 12v deep cycle marine battery might work but forget about using a charger continuously, any charger.   The variance in the work load will trash the charging system in no time at all.  

If it were me, I would pick up a small gas generator with a 12dc output as use as needed, no screwing around..  Your charging system on your atv will not hold up to a continous 8 amp load, especially when you consider the start up current can be 2 to 11 times the running FLA (full load amperage).
« Last Edit: Friday, November 06, 2009. 06:28:29 AM. by Ridetard »

Offline ederdelyi

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Re: OT - How to Hook Up a 12 Volt Pump?
« Reply #24 on: Friday, November 06, 2009. 06:27:58 AM. »
-or-
Buy a pump that runs off of 110VAC  :potstir:  :teeth:

My household emergency genset has the 12v output ... handy and it can charge/jumpstart a vehicle in a pinch. I've used my battery charger as a DC power supply in a pinch ... not elegant but it and the load survived.

Next? ... :pop: