Excellent technical knowledge and helpfull on the phone. This VSR was to replace my old one. It is half the price of my old VSR and is twice as good. It cuts in and charges the leisure batteries and when on hook up power it cuts in to charge the starter battery. It is duel purpose I would highly recommend this product for motorhomes and or boats a superb and well priced bit of kit.

Very prompt service & quality part supplied

Great service and very helpful. Replacement for an old one. Easy to install and it was straight up and running. Early days yet as its only done one short trip, but all seems great and just what was needed.
I have used 12V before and have found them to be an excellent, knowledgable supplier. The get my vote.

Relay works as expected. Good product

My problem was audio equipment.
My power capacitor would drain my battery over time, especially in the cold.
It would not last a nite in winter, resulting in not enough power to start the car in a morning.
I had an inline fuse/RCD device from my battery, and I had taken to flipping that off to isolate things. I often forgot though, resulting in flat batteries.
I contacted 12 Volt Planet describing what I needed, and this deice is what was recommended.
It works brilliantly. Since fitting it, my battery maintains a good healthy charge at all times. I no longer even worry about it. I literally have to do nothing at all to isolate things.
It cost a little more than I could really afford, but it is one the best things I have bought as far as audio gear is worth.
Maximum points, stars, kudos for their patience. Craig was awesome, and his advice was perfect.
THANK YOU 12 VOLT PLANET

Easy to install. The holes for the wire entries could have done with being larger for my installation

I fitted this and thought I'd done a neat and perfect job but something was wrong and the relay kept clicking on and off whenever I had a load on the leisure battery. Checking everything still didn't help until I discovered that the leisure battery earth was just a little insecure and wasn't giving me a good connection. Problem sorted. This is a very simple and efficient method of charging the leisure battery and I would heartily recommend it.

seems to have cured my battery charging problem

After reading through the free useful info on the website I bought a VSR. Three connections to make and it's done. Definitely the easiest way to sort out charging of a second battery.

Comes with diagram showing wiring options.