Overfinch help please

RRChris71 · Apr 16, 2022

Hi all, in desperate need of help please, after a road trip my youngest left the back reading light on, this drained the battery. I got the battery recharged and all was fine until the middle of the night and the battery had drained again, got the hdc and air sus inactive code. Bought a new battery thinking it was a weak one but once again it drained the battery. I don't know what is causing this so I'm asking for any advice or things to check please. It is a 05 3ltr diesel overfinch RR
Thanks in advance

Datatek · Apr 16, 2022

Welcome to the madhouse. Did you fully charge the new battery before fitting it? If not it may have been less than half charged before fitting so would soon discharge.

norseman · Apr 17, 2022

Datatek said:
Welcome to the madhouse. Did you fully charge the new battery before fitting it? If not it may have been less than half charged before fitting so would soon discharge.

+ 1
Good idea to check the voltage as the new battery could have been on the shelf for a while prior to your purchase. Some outlets check the state of charge at purchase, but not always.
Fully charged it should show at least 12.70 volts.

nb. once charged don't check the voltage for at least an hour.

Grrrrrr · Apr 17, 2022

Eric the Car Guy does a good YouTube video on how to track battery drain.

RRChris71 · Apr 18, 2022

Datatek said:
Welcome to the madhouse. Did you fully charge the new battery before fitting it? If not it may have been less than half charged before fitting so would soon discharge.

RRChris71 · Apr 18, 2022

Datatek said:
Welcome to the madhouse. Did you fully charge the new battery before fitting it? If not it may have been less than half charged before fitting so would soon discharge.

Hi, and thanks for your reply and yep it is a madhouse lol, no I didn't charge it as I took it for granted as fully charged as the battery check on the battery was green. I will take it off and charge it again.

RRChris71 · Apr 18, 2022

norseman said:
+ 1
Good idea to check the voltage as the new battery could have been on the shelf for a while prior to your purchase. Some outlets check the state of charge at purchase, but not always.
Fully charged it should show at least 12.70 volts.

nb. once charged don't check the voltage for at least an hour.

Hi and thanks for your reply, and I'm going to remove it and charge it up fully

RRChris71 · Apr 18, 2022

Grrrrrr said:
Eric the Car Guy does a good YouTube video on how to track battery drain.

Will try that thank you

brianp38dse · Apr 18, 2022

RRChris71 said:
Hi, and thanks for your reply and yep it is a madhouse lol, no I didn't charge it as I took it for granted as fully charged as the battery check on the battery was green. I will take it off and charge it again.

The green battery indicator only shows one cell of the battery and is only a very basic ruff guide.

norseman · Apr 18, 2022

brianp38dse said:
The green battery indicator only shows one cell of the battery and is only a very basic ruff guide.

Didn't realise that, I would have made the same assumption as the OP.
You are never too old to learn & will never trust the little green eye on my RRC battery again.

Overfinch help please

RRChris71

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Datatek

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norseman

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Grrrrrr

Technician, Bodgit & Scarper Ltd

RRChris71

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RRChris71

New Member

RRChris71

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RRChris71

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brianp38dse

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norseman

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