I have another more expensive solar charger and I like this one a lot more. some people don‘t know the purpose of a solar charger, it is not meant to recharge your battery it's meant to maintain the charge it has. If you put a dead battery on the solar charger it will remain dead but will not lose any more power then it has already. Batteries will often die within a week or two if you are not driving your vehicle, this prevents that from happening.

This works great for trickle charging my truck battery, but I've just learned how to use it as a USB solar charger.If you buy a 12v power (cigarette lighter) extension with two or three outputs, you can plug the solar charger into one socket, and a car USB adapter into the others. You don't have to plug anything into the cigarette lighter, Power will flow from solar panel into one socket providing power to USB adapter in other socket.

I use this to keep the battery in my camper charged. I have yet to use it on a "battery only" trip, but it does a good job keeping the battery charged when in storage. I also have used it to charge my cell phone while camping, simply used the clips to connect to a charger that plugs into a cigarette lighter, I will be making an adapter soon so that I don't have to use the clips and leave them exposed, but it worked great. . Highly recommend ！

My husband and I purchased a used Ramp accessible van. Shortly after the new battery kept dying. Not fun. Took it to the shop and they still haven't figured out why the van's battery that kills it after about 5 days of not driving. One day i saw this from Eco-worthy. it works like a charm! I'd tried the cigarette lighter attachment but that didn't work, I guess my van needs it direct to the battery. That has kept the van charged and ready to go!