Is it possible to fit 2 regulators taking the the input from one sinlge panel? I have my leisure battery connected to the solar panel via the regulator. I was wondering if I could also take the solar panel output through another regulator & connect it to the engine battery. Would this cause any problems? I wasn't intending to leave this connected all the time but just connect it when I am parked for a while to keep the engine battery topped up. I know that there are products like the battery master at around £60 but I have a regulator with a Maplins suitcase solar panel but can't leave it connected all the time as it isn't waterproof :Sad: so I was considering if I can split the solar panel output. I could easily connect it via the cigarette lighter socket as this is always live on the Renault.