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I left my motorcycle on and drained my battery my bmw battery charger for my battery is indicating reverse polarity after about two minutes even though it is hooked up to the battery properly

Posted by Leif on

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5 Related Answers

Anonymous

SOURCE: battery charge indicator seems faulty.

Solved own problem. Bad conection between pcb and battery contact pins. Reheat each battery pin on the pcb carefully until solder reflow occurs then remove heat. PDA now repaired

Posted on Aug 17, 2008

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Anonymous

  • 2 Answers

SOURCE: BMW motorcycle maintenance

to change the oil you need to remove the sump plug, located on the underside of the sump. the plug is a bolt on the botom of the engine. once the bolt is removd, oil will drain out rapidly so have a container ready to catch the oil.once drained put the sump plug back in and refil with new oil.

Posted on Dec 09, 2008

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Anonymous

  • 62 Answers

SOURCE: hooked up the battery reversed polarity. Blew the fusible link but replaced it. Now the car will crank but not start.

start checking fuses hopefully its just another blown fuse if your lucky

but if all the fuses are good, you probably fried something like the computer or ignition module and probably the radio

hopefully its something simple and cheep but don't be surprised if you have to shell out some cash to replace the computer

Posted on May 16, 2009

BillB-SA

Bill Buchsbaum

  • 2761 Answers

SOURCE: I have an Icom VHF that was hooked up reverse polarity on 12v.

They likely replaced just about every diode and possibly the main circuit board. The tech should be willing to tell you exactly what work was done, and many return the replaced parts.

Posted on Feb 27, 2010

nighttrain_r

Josh Canaday

  • 444 Answers

SOURCE: my 97 bmw 740i has and issue, the battery keeps draining even though i replace the alternator and a brand new car battery. What might be the problem and is their a shortage somewhere in the car electr

misfire is due to a faulty coilpack or bad wire or connection. the drain on your system is another issue. youll have to chase it down with a voltmeter

Posted on Mar 15, 2012

Testimonial: "Well the misfire i took the coil and plug off to check the voltage on it and it measured the same as the rest but when i took the spark plug out their was a crack so i replaced all the spark plugs and the check engine dissapeard thanks"

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1 Answer

Lead acid Car battery was charged with polarity reversed. Can it be re-charged correctly? It blows the charger fuses??


a lead acid will not charge with the polarity reversed
What happens is that in dead shorts and can destroy the battery
it can blow up the battery , blow the charger fuses and destroy the charger
Depending on the damage to the battery cell plates it may be recoverable

Mar 30, 2018 | Cars & Trucks

1 Answer

Motor blows fuse


there is a short in the system that is connected to that relay/fuse. Could also be melted wires if you tried to ever jump start it from a car, start position on a charger or jump start box. Jump starting a motorcycle should never be done. The gauge of wires on a motorcycle are much lighter than vehicles.
It is VERY rare but i have seen batteries that are reversed polarity. Check to make sure battery is 12v + when you test it. Not 12v -

Apr 03, 2014 | 2007 Suzuki Boulevard S40

1 Answer

I installed replacement batteries with the polarity reversed. Since then unit does not display the Contact file, but all other functions (activities, data files, etc.) seem unimpaired. Any ideas? I...


Hi, well the reason this has happened is that these contacts are stored in battery backed up NVRAM, now this RAM is very sensitive to polarity reversal, and also due to the way it works, doesn't have polarity reversal protection, on that circuit. So when you reversed those batteries even though the reverse polarity protection saved the Unit as a whole, the NVRAM would have been destroyed or wiped at best. These is no real way of replacing this NVRAM, I guess you could send it back to the factory though and ask for a "Quote" with view to the repair.

Sep 14, 2010 | Sharp Zaurus ZR-5700

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I charged battery while in camera and left charging for a week and camera won't power up or turn on? it was with a universal charger and may have had higher voltage setting , could this have burned out...


Will your camera power on with a spare battery or through the electrical adapter ? If so then your camera is fine and the problem is your battery!

This is why manufacturers always recommend to use the supplied batteries and recommended chargers only and not some third party junk. This is why you have batteries exploding on people they don't read the warnings.

Yes it is possible to damage your battery - perhaps your battery cannot take a charge - it is NOT normal to charge a battery for a week !

your battery needs a nominal voltage to remain healthy if you allow it to drain below that voltage you have reverse polarity and your battery is good for the garbage bin.

use the recommended charger from now on and get new batteries.

Sep 26, 2009 | Sony Handycam CCD-TRV308 Camcorder

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