24V solar panel charging 24v van batteries (2x 12v batteries in series)

[cosmo]

Hi. wow just discovered this web site.. love it already.. Can i ask some advice please. I bought a solar panel on a trip to spain a couple of years ago and have finally got around to looking at it. There are no markings on it but my tester is giving a reading of 24v. Im not sure of the wattage. it is connected to a "fabrimex fbc12- 12v Nom 10a Max" regulator. My question is can i connect the the regulator straight to my 24v van system? ( 2 x 12v batteries in series )
I have been looking at buying a more up to date regulator but its a mine field for a novice like me to understand...
i have a 12v panel on my roof that charges my 12v leisure system and also a system set up to charge the 24v batteries whilst driving but when stationary my (old ish) batteries are dying... i guess i need to invest £200 on two new ones aye...
thanks in advance
cosmo

 

[Deleted member 3011]

a 24V nominal panel will put out around 37V when measured with a multimeter, a 12V one will put out close to 20V.

Possible you have an oddball panel, but more likely to be a normal 12V panel, but if you check the specifications of your unfitted 12V solar regulator, it will give the range of permitted input voltages.
Counting the cells on the panel and comparing it with the number of cells on your other panel will confirm it (assuming they are not amorphous panels)

The two items you have WILL NOT do anything to charge a 24V battery

Haven't found details of that fabrimex unit on the internet so ...