solar/ liesure battery

06/05/2022

Something is not right still! 

Liesure battery loosing power again. 

All connections checked.

Time to Google 😂

After around an hour of reading checking this and that came across a campervan electrics blog, several ways of working were shown one had the same mppt controller as I have, but 2 ways of wiring it! 

The controller came without instructions 3 sets of 2 connections, solar panel ( tiny picture of what is a solar panel ) battery again small black embossed picture of a battery last one just a light bulb above connection. 

When I got the van it was pre wired to solar panel with the " bulb" connection wired to the interior led lights. Made sense to me lol. 

BUT the digram I found called that connection "load" which means all 12v accessories ! I knew that 😂 

So stating the bleeding obvious, it makes sense that ALL 12v accessories needed to go thru that terminal !

Could this be why I've been having liesure battery issues ? Sounds likely enough. But only since swapping to solar only! So I guess SP unit took care of it all mostly as once or twice liesure battery was lower voltage than it should be but not drained and when we're parked up we use mains electricity. 

So put the liesure battery on charge.

And moved all 12v accessories over to the  "lightbulb terminal" easy enough by using the busbar. 

Tidied up the HT leads going into solar charger and re run 2 new HT leads + & - to the "lightbulb" connection. 

With fingers crossed fired up the propex tick! Fridge..... Bugger! Nowt, slightly loose connection to fuse box sorted tick, oven tick ,

Cold water supply tick! 

Great sunny day so solar panel doing its job. 

Just remembered there was an issue with the liesure battery cut off switch! Faulty So removed when sorting ! 

Damn 12 v voodoo !

So will monitor daily to see how things progress!

11/05/22

Quick check of in & out terminals, I heard the propex " clicking" turns out a slightly dodgy earth cable. 

"Q" re route and tighten of spade connection seems to have done the job.

Leisure batter V reading 12.4 

Will still monitor for a while just incase it's also the leisure battery starting to fail (6yrs old)