Does anywhere actually sell a battery charger anymore?
Discussion
dhutch said:
As said, while a minor pain, you can 'jump' the totally dead battery with an ok one.
As said, zero volts is often toast, but if you know it's history (IE, was perfect till it had a bootlight drain it for 48h or so) they are remarkably resiliant.
Daniel
Hey thanks, yes I had drained the previous one before a few times as my car lived in a garage with no output for my trickle charger. Usually once jump started it was absolutely fine with regular use, so I have no worries about it working long term. I just now have 3 cars all in central London and only one lives in the garage so I'm sure I will have a need for a proper charger again but it seem there just isn't a basic one. I guess I will just have to buy a jump starter pack and use that to charge it until the so-called "smart" chargers can take over.As said, zero volts is often toast, but if you know it's history (IE, was perfect till it had a bootlight drain it for 48h or so) they are remarkably resiliant.
Daniel
Thanks to all those who actually tried to help
Taking them to 0v will damage the battery.
The battery will never be quite as good as it was.
But it might not kill it, it might be good enough for a long while.
Just try not to do it again, disconnect and then its better to regularly cycle it - take it down to 12v and recharge again as they don't like holding a charge either, they are designed to be used- i think you can buy a device to do this (CTEK etc).
The battery will never be quite as good as it was.
But it might not kill it, it might be good enough for a long while.
Just try not to do it again, disconnect and then its better to regularly cycle it - take it down to 12v and recharge again as they don't like holding a charge either, they are designed to be used- i think you can buy a device to do this (CTEK etc).
Penelope Stopit said:
buggalugs said:
Connect the charger up to the flat one then put jump leads on it for a few seconds, it will continue to charge after you remove them.
Works every time, good postwas8v said:
Penelope Stopit said:
buggalugs said:
Connect the charger up to the flat one then put jump leads on it for a few seconds, it will continue to charge after you remove them.
Works every time, good postwas8v said:
Taking them to 0v will damage the battery.
The battery will never be quite as good as it was.
But it might not kill it, it might be good enough for a long while.
Likely very true, certainly it is no good practice at all, but having done it the only thing to do is get it charged back up asap and see how it goes.The battery will never be quite as good as it was.
But it might not kill it, it might be good enough for a long while.
Might well get another five years out of it.
Daniel
Dr Doofenshmirtz said:
AWESOME!Thank you very much, that link was expired but I found an 8 Amp one for a tenner. Thanks very much.
https://www.ebay.co.uk/itm/223139414088
GreenV8S said:
A lead-acid car battery that has been taken to zero volts is almost certainly going to be useless as a car battery afterwards anyway.
Chris32345 said:
If a battery has got that flat a ctek charger won't charge it
It's probably toast
But they aren't! I have previously had several batteries in an old Beetle that I had and my Mk1 Golf that have sat in excess of 2 years without charge and have come back absolutely fine. My Golf is regularly not used for months at a time and regularly a good long charge brings the battery back to serviceable life. It was just needing a cheap basic charger to kick start it again. It's probably toast
These so called smart chargers are now telling people batteries are dead or not revive-able when they quite simply are.
R11ysf said:
GreenV8S said:
A lead-acid car battery that has been taken to zero volts is almost certainly going to be useless as a car battery afterwards anyway.
Chris32345 said:
If a battery has got that flat a ctek charger won't charge it
It's probably toast
But they aren't! I have previously had several batteries in an old Beetle that I had and my Mk1 Golf that have sat in excess of 2 years without charge and have come back absolutely fine. My Golf is regularly not used for months at a time and regularly a good long charge brings the battery back to serviceable life. It was just needing a cheap basic charger to kick start it again. It's probably toast
These so called smart chargers are now telling people batteries are dead or not revive-able when they quite simply are.
I like you have very rarely needed to scrap a battery because it had gone flat, you've had several batteries go flat and re-used them without problems
I've recharged thousands of batteries that have gone flat
It's an internet thing
I think the thing is, leaving a lead acid stone dead for a year will damage it, but charging it back up again will almost certainly make it work ok.
Ok is all most cars need, as long as it can get the engine over tdc about twice it will fire, and then its all about the alternator not the battery.
Daniel
Ok is all most cars need, as long as it can get the engine over tdc about twice it will fire, and then its all about the alternator not the battery.
Daniel
dhutch said:
I think the thing is, leaving a lead acid stone dead for a year will damage it, but charging it back up again will almost certainly make it work ok.
Ok is all most cars need, as long as it can get the engine over tdc about twice it will fire, and then its all about the alternator not the battery.
Daniel
Very trueOk is all most cars need, as long as it can get the engine over tdc about twice it will fire, and then its all about the alternator not the battery.
Daniel
Did you know that the quicker they are discharged to flat, the quicker they will recharge to full?
Good innit
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