I have a problem with my caravan battery. It is still under wtty and I have contacted the suppliers, they have given me the following reply:
"This sounds like the battery is completely flat, this would be due to something draining the battery, therefore you would need to have the battery boost charged at a local garage. Once this has been done, the battery can go onto a normally charger and should work as normal. If you are still having difficulties then the battery would need to be tested."
I have used 2 normal maintenance chargers but they have no affect. What is boost charging and can I do it myself, is it like jump starting?
If the battery manufacturers want you to take it to a local garage to be boost charged, then I suggest that is what you do, whether you have the necessary equipment or not.
Because it is a warranty situation, they are calling the shots.
------------- Lobey.
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I do not understand exactly what a "boost charge" entails either.
Without getting technical, when a battery goes "completely flat" (ie no volts at all) it will not accept a charge.
The only thing I can think of to recover it is to put it on a charger with a very low current in order to attempt to get it above about 10v. Then it should accept a normal charge of 4 - 8 Amps. But you might already have done this with your "normal maintenance chargers".
Perhaps if you are considering returning the battery under warranty, I feel you are obliged to carry out the instructions re having it "boost charged at a local garage." first.
What is the problem with the battery? Do you mean you have charged it & it will not retain its' charge? If its a caravan 'leisure' battery I don't think they are mean't to be boost charged.
Boost or equalization charging involves short periodic overcharging, which releases gas and mixes the electrolyte, thus preventing stratification of the electrolyte in the battery.
In laymans terms they Zap it with a high charge rate for a short period or untill the battery reaches 70% of is capacity.
Saxo1
I think they are trying to fob you off, why should you have to pay a garage to boost charge it for you? If it won't accept a charge it could well have a dead cell, if its faulty they should replace it under warranty, how old is the battery?
Quote: Originally posted by Tentz on 02/3/2011
I think they are trying to fob you off, why should you have to pay a garage to boost charge it for you? If it won't accept a charge it could well have a dead cell, if its faulty they should replace it under warranty, how old is the battery?
second that
------------- the only silly question is the one you do not ask.
From time to time a battery will benefit from recieving a high charge for a short period of time. Any battery charger that regulates its charge, will put out high then decreases its charge to a trickle as the battery gets fully charged. If you have a car battery charger that does this, this is probably what it needs.
Someone on here posted recently regards a battery being reversed charged, all the info is in that post. Caravan chargers don't charge at that rate, and so never get 100% charged. Hence a boos charge from time to time is good for them.
If you have a Multimeter check the batts out put anything above 12.4 volts is a good battery. Also what about the indicator on the battery? If its black the battery is dead??
some times if a battery is too flat to accept a charge from a charger it can be jump started by using jump leads from a fully charged battery until both batteries equalize then charged with a smart charger