“I use this connected to a Lithium battery when I'm doing a bit of Astrophotography. I can put it on a small table and power a laptop with a 12 adapter and supply 12V and 5V to other devices with the very ample set of 12 sockets and USB connectors. Being able to with off the meter and light is great to keep down high. So good I have purchased a second unit for my slide-on camper for permanent installation.”
Hi Paul, there is a fuse inside which fuses the three cigarette sockets. The other accessories are protected by auto resetting circuit breakers. If just the cig sockets have failed, open the unit up and you will find a spare fuse to replace the current one.