Question about Schumacher & Fast Charge Starter Charger

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I have a schumacher 4225 charger and it does not come on in any of the selector positions????

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: Issues with Schumacher Battery Charger SE-82-6 -

I have the same one. The black wire from teh ac cord has a white connector that goes on the switch but there are 4 choices. I need a diagram as well.

Posted on Mar 14, 2011


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I have a Schumacher 6/2 amp dual charger, SE-82-6. I took off the clamps. Now don't know which wire is positive. One has a white line on it.

Get a volt meter and hook up the test probes to the cable ends and turn the meter on, the meter will say 12 or -12 if it says 12 then you have the red and black from the meter connected to the red and black on the charger in the right manner, if it says -12 then you have them reversed. Take the cable clamps and put them back on.

Mar 01, 2016 | Schumacher SE82-6 Manual Charger...

1 Answer

I need wiring schematic

I believe you'll find all you need to know in the owner's manual which you can find here:
There is no schematic other than the operating instruction on p9. Connect red to red, black to black (usually earth).

Aug 24, 2014 | Schumacher & Fast Charge Starter Charger

1 Answer

Circuit wiring diagrams

I believe you'll find all you need to know in the owner's manual which you can find here:

Aug 24, 2014 | Schumacher & Fast Charge Starter Charger

1 Answer

Se-4225 will not charge timer working

Bad resistor inside the unit will not let power convert from ac to dc

Dec 16, 2012 | SE4020 2001004010 Amp Manual Starter and...

2 Answers

Need a 3 position switch for a Schumacher model se-2352 battery charger

Search for 3-position rocker switch
Use google and google image search.
Quick search shows 16 amp switches.
Probably the switches inside charger control contactor or relay.
Or connect directly to a circuit board.
The board might be bad, or relay points burned.

If you need further help, I’m available over the phone at

Oct 26, 2012 | Schumacher Electrical Supplies

1 Answer

I purchased a se 4225 and the knobs on the front were missing. I need to get 2 knobs do you know where I can get these at. Thanks Frank

I would call 1-800-621-5485
If the unit you have is a Schumacher 40/20/2/65/125 wheel type charger starter battery charger
They should be able to send out a couple of knobs for you.

If this isnt a wheel type charger, i will need to know what it is, and the brand.

Nov 23, 2010 | Garden

2 Answers

Need to charge 12v car battery


If battery is out of the vehicle, connect positive lead to positive terminal and negative lead to negative terminal.

If battery is in the vehicle, the proper way to connect leads depends on if it's a negative-grounded or a positive-grounded vehicle.

Here is a link to the manual for this charger.
Click where it says "Get This manual" (it's free).

Scroll down to pages 4 and 5 and it give detailed instructions on the proper way to connect leads and a lot more. It's a good manual to keep for future use.

I hope this helps.

Sep 22, 2009 | Schumacher & Fast Charge Starter Charger

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