So some ass hat ruined my battery charger by leaving it outside in the rain. I know who it was. Didn't realize it was broken till I tried to charge my battery.

I don't have the money for a battery charger so can I just run jump cables from my SDL to battery while the battery is out of the car?

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1998 Ford Escort ZX2 5 speed - 279,000 miles My Daily

1992 Mercedes 300D 2.5 202,000 - Pure junk
2000 Mercedes E320 Black - 136,000 miles - Needs repair

Don't forget to grease the screw and threads on the spring compressor.

Try taking it to autozone? I think they will charge them for free.

Really? Also isn't a slow charge healthier than a fast one?

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1998 Ford Escort ZX2 5 speed - 279,000 miles My Daily

1992 Mercedes 300D 2.5 202,000 - Pure junk
2000 Mercedes E320 Black - 136,000 miles - Needs repair

Don't forget to grease the screw and threads on the spring compressor.

Do you mean connecting it via jumper cables to a running car with its own battery or something else.

Your alternator will charge a battery at its rated capacity if given the opportunity. That's hardly a slow charge. If you're having to repeatedly charge a battery, replace it or fix the problem in the charging system. Or shell out for a battery charger, they aren't expensive unless you're a brand snob.

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Current stable:
1995 E320 149K (Nancy)
1983 500SL 120K (SLoL)

Black Sheep:
1985 524TD 167K (TotalDumpster™)

Gone but not forgotten:
1986 300SDL (RIP)
1991 350SD
1991 560SEL
1990 560SEL
1986 500SEL Euro (Rusted to nothing at 47K!)

The battery was healthy, my stupid brother attempted to start the E300 that has air in the fuel lines. Dumb ass drained the battery and is going to pay for it if it's dead..

I had a battery tender, I'll just buy it again.
Hooking jumper cables to a battery that's removed from a car.

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1998 Ford Escort ZX2 5 speed - 279,000 miles My Daily

1992 Mercedes 300D 2.5 202,000 - Pure junk
2000 Mercedes E320 Black - 136,000 miles - Needs repair

Don't forget to grease the screw and threads on the spring compressor.

It is OK to charge the battery with a running car, won't be a problem if the alternator in the running car is in good condition.

If your cars battery lives in the trunk, you could even tie the depleted battery down and leave cables attached while you drive. Just make sure the battery can't slide around or the cable clamps contact ground.

You can connect the battery from a car to the depleted battery using jump cable. If the car is running then both will be fully charged given time. If the car is not running then the depleted battery will be charged by the car battery until the voltage is the SAME in both batteries. That is, half of the energy is moved to the dead battery. It may be enough to start the car.

If you don't have the money to buy a charger. You can do these.

1) find a AC to 12v power adapter in your electronic equipment collection and use it to charge the battery. It will take a while but it will work.

2) go to Craigslist and look for non working UPS under computer section. Most have a bad battery and they are sold for dirt cheap. The charging circuit is still good. I picked one up for free and/or for $1. Open it up and swap in your depleted battery. Plug the unit in and it will charge the battery.

Good luck.

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Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

1 X 2006 CDI
1 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.

The one near me does, and you drop it off there and they charge it over several hours, then test it to see if its good.

It’s ok to charge a battery from another car. In some ways doing it on a stand-alone disconnected battery is better. But an alternator never truly, fully charged the battery, and trying this will indeed put strain on your working car’s electrical system. You really are better off charging via a real charger.

I agree on taking it to a store that will test it. They’ll fast charge it for free, which will at least get some decent initial charge into it. After that if you wanted to idle a car and do it that way it’s less stress on the cars electrical system. Better is still to use a proper charger.

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Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1985 190D (169k)
1991 350SD (113k)
1991 350SD (206k)
1991 300D (228k)
1993 300SD (291k)
1993 300D 2.5T (338k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (265k)

Past Diesels:
1983 300D (228K)
1985 300D (233K)

Welp guys battery is dead, fck me...

Another few hundred to spend

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1998 Ford Escort ZX2 5 speed - 279,000 miles My Daily

1992 Mercedes 300D 2.5 202,000 - Pure junk
2000 Mercedes E320 Black - 136,000 miles - Needs repair

Don't forget to grease the screw and threads on the spring compressor.

Charge the battery. Why are you replacing it?

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Only diesels in this driveway.
2005 E320 CDI 243k Black/Black
2008 Chevy 3500HD Duramax 340k
2004 Chevy 2500HD Duramax 220k

Somebody left his charger in the rain, hence the use of a running vehicle to try and charge the depleted battery.

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96 E300d

We need to get terminology straight, calling a rechargeable battery " dead " is like saying a car won't start ( no crank or no run ? ) / or calling any fault in an electrical system " a short "

Discharged battery = the battery is in good condition but can't provide more power without a recharge. ( Think empty gas tank. )

Failed battery = one that won't take a charge / fails a load test. ( Think gas tank with a hole in it or is too small. )

Why not put the drained battery in your car, jump that battery, and drive around with the "dead" battery until charged ? I would do that for a week and it should be fully charged.