DOKIO300W 18V Portable Flexible Solar Panel Kit Folding Solar Charger with 2 USB Outputs for 12v Batteries/Power Station AGM LiFePo4 RV Camping Trailer Car Marine

I bought it to charge an 1,800W class of power station. It is vary convenient that the various size of DC connectors are provided for. There are no special problems so far, and performance testing has not been done yet.

I purchased this to extend the cable. The cable length was appropriate considering the general guideline for solar panel and there were no problems connecting to each other. I am satisfied so far.

Pros:300 WATTS!!Thin, lightweight but fairly durable and weather resistent.I wouldn't leave it out in the rain with exposed plugs (you won't get much solar anyway)can deal with dusty conditions (i.e. use boondocking in dessert/western BLM land ... dry)has some flexibilty, SOME flexing will not damageThin, easy to store (I kept the box and padding) outer box only 1.5" wide, easily stores behind RV Couch, dinette, or behind the bench seat of a pickup etc.CONs:short cord, be sure to buy the 25' extension cord.battery connection clips are a little small but I was able to connect to 12v lithium batteries.light weight means susceptible to wind. So I just laid flat on the ground with rocks on the corners and seams in between panels.They make stands for them, (which I couldn't find on Amazon) but they will still blow over if not weighted down and the stands are something else to store. can be leaned against tires. put on the roof (flat or accordian), hang on a ladder ... etc.Instruction Manual is written in "Chinese English" very difficult to read and controller programming is not all that intuitive.---But overall very happy with the product and would buy again. Just have to get through the pains of the initial setup and controller programming. Give yourself an hour the 1st time you read the manual and attempt to set the controller for your specific battery type (think the default was "lead acid" not LIFEPO).

The Dokio 110 watt system I set up worked well in cloud and sun. I built a simple plywood support frame and let it go to work. Charging ranged from 24 volts in full sun to 13.5 low in full cloud. It was a good unsettled day to test the unit. I had two 90 amp hour deep cycle batteries hooked up in parallel and my IPad which was at 16% charge from start time. The batteries started with a reading of 12.9 volts and after after 5 hours were 13.5 volts. The IPad was at 75% charge after 4 hours. I also like the charge controller readout screen. It keeps you informed of the performance and constantly monitors the pv output. I can see that we will be able to extend our RVing off the grid considerably without worry about losing power or resorting to a generator. A 200 watt system would likely keep the batteries fully charged but for us, this will do the job nicely. Super happy so far.

Good value for the money