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Old 06-20-2011, 04:22 PM   #1
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replace 12V battery with transformer?


I have a straddle-stacker (it's a forklift, but all manual except the lifting) that is powered by a 12V car battery. The battery is starting to wear out and I would rather not replace it. Just seems like a bit of a waste when I don't use this thing very often and I'm always close to power.

What would I need to eliminate the battery and just power this thing from the building 120V.

I'm very comfortable with home electrical but I know nothing about low voltage, AC/DC, etc...

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Old 06-20-2011, 04:57 PM   #2
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replace 12V battery with transformer?


It would require a very large transformer plus transformers only supply AC to AC they do not convert AC to DC.

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Old 06-20-2011, 05:13 PM   #3
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replace 12V battery with transformer?


It would first require knowing the power requirement of the unit. How much current(amps) does it need to operate? Then a 12 volt power supply with the proper amount of amps. Even a battery charge if larger enough will do it.
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Old 06-20-2011, 05:19 PM   #4
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replace 12V battery with transformer?


It will almost certainly be cheaper and easier to replace the battery and keep a small trickle charger on it continuously. Car batteries can supply huge amounts of power for short periods of time, and equipment like this often makes good use of that capability. The motor in your machine may draw over 100 amps (possibly several hundred) when loaded down. To replace the battery entirely with a power supply would require a very hefty power supply to handle that kind of load. Batteries are much cheaper, and a small trickle charger will keep it ready to use.
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Old 06-20-2011, 07:14 PM   #5
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replace 12V battery with transformer?


quarfie....I'm sure you will get many answers to this question, but by far the best advice you will get is what mpoulton told you. You couldn't find a transformer cheaper than a new battery and trickle charger. And believe it or not no matter how careful you are or would be, you will run over or pinch the cord if you still choose the transformer / inverter route.
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Old 06-20-2011, 07:57 PM   #6
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replace 12V battery with transformer?


Quote:
Originally Posted by quarfie View Post
I have a straddle-stacker (it's a forklift, but all manual except the lifting) that is powered by a 12V car battery. The battery is starting to wear out and I would rather not replace it. Just seems like a bit of a waste when I don't use this thing very often and I'm always close to power.

What would I need to eliminate the battery and just power this thing from the building 120V.

I'm very comfortable with home electrical but I know nothing about low voltage, AC/DC, etc...
How many years did this battery last?

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