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Hi Maggie, Has the multimeter any smaller range setting than 200 volts, say 20? If not then it's not very accurate, it does however need to be set on DC volts not AC, 28.4 volts DC would be impossible to be correct.

5 mins doesn't sound like enough charge, is it one of those intelligent ones like a C-tec or an ordinary car job? The maintenance free part is that you don't have to top it up with distilled water every now and them. If you can take it to a local tyre & battery place they can put a battery tester across it and test if it holds a charge.

Dave

your meter if fully charged should read 12.7 volts,on EHU it should read 13.5 to 14 volts as it is charging. at 11 volts the battery is flat. to read.........

see looking after your battery

http://www.campingandcaravanningclub.co.uk/helpandadvice/technicalhelp/datasheets/

hi it was a mTEClesiure battery 85 amp and yea it is the dual charer from halfords

http://www.ukcampsite.co.uk/redirect.asp?redir=http://www.halfords.com/webapp/wcs/stores/servlet/product_storeId_10001_catalogId_10151_productId_210939_langId_-1_categoryId_255205

this is the one we have but we since found out the motor mover had a lose wire and they have now fixed it meanwhile we though it was the battey and charged it so its possible we overcharged it cos we tried it on van before and it read 12 on caravan dial we put 2 lights on in the  van  and it dropped to zero not lookin good

this is the second battery this has happened to the other only lasted 2 yrs but we did the same thing it was showing 12 on the caravan dial looking like it was half charged so we disconected the leads and left it we then charged on the halfords charger about oct /nov then charged it again in feb/march as we have been told to make sure its topped up with charge someone told us charge every month as a flat battery will not re charge. But the caravanplace said no do it a couple of times when you lay the van up as you will overcharge it and ruin the battery which is correct .We are not sure.

As its expensive replacing it every two years has anyone had a battery for a few years and if so how do they maintain it we apprecaite all your help thanks

not well know fact is a flat battery can freeze if it goes really flat when stood in storage.this could explain the bulge.water expands 8 to 1 when frozen.overheating can cause same fault.

does this do the same

http://www.ukcampsite.co.uk/redirect.asp?redir=http://www.halfords.com/webapp/wcs/stores/servlet/product_storeId_10001_catalogId_10151_productId_210939_langId_-1_categoryId_255205

this is the onewe have we took it back to halfords and got it changed as it charged for 4 soild days and never went to mainting like the other one did they said it might have been faulty althogh that dont help us much didnt know you could leave them on all that time but we are going to fetch it indoors under the stair next year in case of frost soda law you always find out once you goosed tha battery thanks everyone for all your help