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24v military battery charger

101coolcars

Member
Steel Soldiers Supporter
201
1
18
Location
San Luis, colorado
Check out this cool charger i just scooped up off ebay, it was only listed for a few minutes. 6/12/24 volt charger with a slave connector plug, this thing is really gonna make my life easier. the pics and description are here 220540612339. does anyone have experience with these? I have been looking for a quality unit for a couple on months. snap on has one but its like 650 bucks and it looks like its plastic.

Military support equipment, more cool stuff!
 

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onegmjack

New member
1,080
8
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Location
Kingsport TN
I seen that but you beat me to it.Post up how it works.I had one my brother gave me it was gave to him when he worked in a Freightliner Dealership,but it was stole.Came with a cable to connect the batteries,just hook to two 12 volts and charge. Wish I had it now but, God Bless the thieves.Good luck and post up the results.
 

Crazyguypa

Member
211
3
18
Location
windsor, Pa
I've got 2 of em and I can say it's one of the best things that I had gotten from GL over the years. Best of all it has the slave cable connector, so you don't even have to open the battery compartment up to connect. The 24v setting will not show the proper charging voltage across the connectors until a load is placed on it. It sounded strange to me at first when I checked the chargers.

on 6v across the connectors would be 7v with a voltmeter - good
on 12v across the connectors would be 14v with a voltmeter - good
on 24v across the connectors would be 22v with a voltmeter - not good. I took one of the chargers into work and had the electrical dept take a look at it and they confirmed what I found. They then hooked it up to a 24v battery setup and it wasn't until then, did they find out when that the charger was attached to a load would it put out the correct voltage of 28v.


you can also find the operating instructions on the internet. I think its only like 2 or 3 pages.

If you got any questions. send me a pm
 

BKubu

Well-known member
Steel Soldiers Supporter
4,720
1,081
113
Location
Gaithersburg, MD
Hey Frank, are you interested in selling one? I bid on one a while back, but did not get it. Please PM if you are interested in selling it.
 

tennmogger

Well-known member
Steel Soldiers Supporter
1,574
524
113
Location
Greenback, TN
Hi,

Those "wrong" voltage readings are probably due to the waveform of the charger output. Most likely the output is unfiltered pulsed DC. Most voltmeters will try to read that and come up with some kind of average voltage. Different voltmeters will read different results (depending on their effective time constant).

Placing the battery across the charger lets the voltmeter read the true average voltage. The battery is an excellent filter!

A capacitor across the charger would also correct the problem, but you'd then read an unloaded peak reading.

Bob

I've got 2 of em and I can say it's one of the best things that I had gotten from GL over the years. Best of all it has the slave cable connector, so you don't even have to open the battery compartment up to connect. The 24v setting will not show the proper charging voltage across the connectors until a load is placed on it. It sounded strange to me at first when I checked the chargers.

on 6v across the connectors would be 7v with a voltmeter - good
on 12v across the connectors would be 14v with a voltmeter - good
on 24v across the connectors would be 22v with a voltmeter - not good. I took one of the chargers into work and had the electrical dept take a look at it and they confirmed what I found. They then hooked it up to a 24v battery setup and it wasn't until then, did they find out when that the charger was attached to a load would it put out the correct voltage of 28v.


you can also find the operating instructions on the internet. I think its only like 2 or 3 pages.

If you got any questions. send me a pm
 

stumps

Active member
1,700
11
38
Location
Maryland
on 6v across the connectors would be 7v with a voltmeter - good
on 12v across the connectors would be 14v with a voltmeter - good
on 24v across the connectors would be 22v with a voltmeter - not good. I took one of the chargers into work and had the electrical dept take a look at it and they confirmed what I found. They then hooked it up to a 24v battery setup and it wasn't until then, did they find out when that the charger was attached to a load would it put out the correct voltage of 28v.
The strange readings are because the charger rectifies, but doesn't filter the output. Your DC meter sees the average voltage, but the battery sees the peak.

-Chuck
 

NEIOWA

Well-known member
1,188
115
63
Location
NE IOWA
Check out this cool charger i just scooped up off ebay, it was only listed for a few minutes. 6/12/24 volt charger with a slave connector plug, this thing is really gonna make my life easier. the pics and description are here 220540612339. does anyone have experience with these? I have been looking for a quality unit for a couple on months. snap on has one but its like 650 bucks and it looks like its plastic.

Military support equipment, more cool stuff!


What is the NSN?
 

NEIOWA

Well-known member
1,188
115
63
Location
NE IOWA
I have on that I got for our FD. Looks same as OP's photo. Oures dDoes not have a slave connection though. I would also be interested in photo of your cables.

The one we have does not seem to have a booster/start function. Works ok for trickler/charge. Maybe need to locate a TM w/instrucitons.
 

emr

New member
3,211
24
0
Location
landing , new jersey
an fyi is still need to pull batts once a year and rotate so u do not get a lazy one in the back after awhile, not telling, just suggesting, great find and wish i had one too. :) good luck with it,
 

3dAngus

Well-known member
4,719
101
63
Location
Perry, Ga.
I'd rather have that one than mine (PP-1451/G), but mine don't cost as much, even though they put out more current.

Thing weighs about 200 lbs.

Yours is more compact and has the slave connector. I had to wire mine up with one. Good find!!!
 

islandguydon

Well-known member
Steel Soldiers Supporter
3,724
778
113
Location
Michigan
I have tried a few times to pick up the unit you have, You should be proud of your find. There is nothing better for your application.
 

Triple Jim

Well-known member
1,373
277
83
Location
North Carolina
That looks like a decent one for 12 and 24 Volt batteries. I got at kick out of the 7200 mA rating. I guess they think that sounds a lot better than 7.2 Amps.
 

PeterD

New member
622
6
0
Location
Jaffrey, NH
Our local 'outlet' (Ocean State Job Lot) has a few 12/24 volt chargers. They're about $70 each. I could stop by tomorrow AM and see if there are any left.
 

91W350

Well-known member
4,414
57
48
Location
Salina, Kansas
We have one that came in a generator repair trailer that I bought at Riley. It has been very tough, easily the best charger I have ever been around. We use it all the time on crawlers and wheel loaders, if anybody knows where I can get another, please chime in!
 
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