Help on batteries please (1 Viewer)

[sally47]

Hi all we have a chieftain with two lesure batteries and a battery mate connected to engine battery a 140 solar panel on the roof the leisure batteries are two years old on a sunny day there is about 2.5 a going in that's ok and builds the leisure bats to 13.8 fine but after a couple of hours it's down to about 12.6 without anything switched on do I need a couple of new batteries any advice please

 

[Munchie]

12.6/7v when not chargeing your batteries are charged! The higher reading is because your batteries are chargeing!

 

[steevie]

Yep, thats correct. alternators, gennies, solar etc all charge at around 14.2v, but after a few minutes after switching off, the batteries should settle to about 12.6 ish. 12.8 would be good, below 12.4v would be bad.

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[StitchesnFluff]

They are still in the green so that's ok

 

[Dave and Ginny]

My 110 amp Banner is coming up 5 years old. Never had one last that long and I was going to change it based upon age. But it still holds a charge no problems and I had everything going in the van (heating, lights, DVD player) the other day for hours and it still was just over the 12v by the end of the day.

 

[sally47]

Thanks for your help feel a it more confident now

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[scotjimland]

Useful chart .. check the battery voltage with NO LOAD and at least 30 mins after charging..

and try never to discharge below 50% .. 12.06 v .. as it will seriously shorten the life of the battery..