walshie Posted July 16, 2020 Report Share Posted July 16, 2020 I have an 85ah leisure battery. Is it best to charge it at 3a or 8a? (The only 2 settings on my charger.) Quote Link to comment Share on other sites More sharing options...
DUNKS Posted July 16, 2020 Report Share Posted July 16, 2020 I think 8 amps but do not overcharge at this. I have read that if you charge at too low a level they will sulphate up. a higher charge clears this but you can overcharge. Far better you buy a dedicated charger which will charge initially at a high rate, detect the state of the battery and cut back as required to keep it topped up. Not expensive , mine cost me £45. Quote Link to comment Share on other sites More sharing options...
walshie Posted July 16, 2020 Author Report Share Posted July 16, 2020 Just now, DUNKS said: I think 8 amps but do not overcharge at this. I have read that if you charge at too low a level they will sulphate up. a higher charge clears this but you can overcharge. Far better you buy a dedicated charger which will charge initially at a high rate, detect the state of the battery and cut back as required to keep it topped up. Not expensive , mine cost me £45. Mine is an automatic charger so won't overcharge but I just wondered whether to set it to high or low to start with. Cheers for the info. 8a it is. 👍 Quote Link to comment Share on other sites More sharing options...
JohnfromUK Posted July 16, 2020 Report Share Posted July 16, 2020 12 minutes ago, walshie said: I have an 85ah leisure battery. Is it best to charge it at 3a or 8a? (The only 2 settings on my charger.) I can't believe that either would hurt it as 8A is a 1/10th capacity charge rate - which should be fine. I would not leave it on 8A for long term (i.e. say more than a day or so). There is an article here https://www.campingandcaravanningclub.co.uk/AdvicePdfs/Datasheet-36.pdf Quote Link to comment Share on other sites More sharing options...
walshie Posted July 16, 2020 Author Report Share Posted July 16, 2020 Just now, JohnfromUK said: I can't believe that either would hurt it as 8A is a 1/10th capacity charge rate - which should be fine. I would not leave it on 8A for long term (i.e. say more than a day or so). There is an article here https://www.campingandcaravanningclub.co.uk/AdvicePdfs/Datasheet-36.pdf It's not very flat, so should be charged today so I can keep an eye on it. 👍 Quote Link to comment Share on other sites More sharing options...
JohnfromUK Posted July 16, 2020 Report Share Posted July 16, 2020 Just now, walshie said: It's not very flat, so should be charged today so I can keep an eye on it. 👍 👍 Quote Link to comment Share on other sites More sharing options...
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