ECO-WORTHY 120W Foldable Solar Panel Charger for Portable Power Station and RV Battery, DC Output for Solar Generator, with 20A Controller for SLA/AGM/Lithium Deep Cycle Battery RV Camping

I bought this as a little project to build a diy mobile power station using an AGM battery. The key was keeping it as low cost as possible so this kit fit in perfect.You get all the leads needed to charge a battery along with a cheap but very usable charge controller.What I like about this charge controller is you can plug a USB into the charge controller so its great to charge phones and power banks from the battery. The solar panel often isn't enough to charge appliances on their own as you often get a fault appearing at low voltage.This is sold as a 120 w solar panel but thus figure is taken from the max amount of amps and voltage the panel should be able to reach. The power for this panel is indicated as being a maximum voltage: 18V and a maximum current: 6.67A which will add up to 119w of energy.Most 12v battery systems will require between 12 and 14v to charge so if you had a system like mine where you have a 12v AGM battery that requires 14v to charge the most you will get is 92w of power. That's if you are receiving the max amps of 6.67a. Realistically charging at 14v the most you are going to get is between 2 and 5amps which will give you between 28 watts and 70 watts.I'm living in Ireland and on a really sunny summers day I was able to reach 5amps and on a clear sunny winters day between 2 and 3 amps peak time.My AGM battery requires a high voltage to charge just a little over 14v which the charge controller can handle no problem. Its one of the highest settings for a battery so depending on the battery you have your watt generated will change.With this panel from my personal use the max you will get is about 70 or 80 amps of energy on a really good summers day at peak times.Would I buy it again knowing this? Yes I would. The panels are very well made. Solar charge controller is cheap but for the power this panel generates its more than enough.

Firstly it is a very nice compact unit and will take up little room in your van. However the first thing you will notice is that they are pretty mean with the cabling to your battery approx. a metre long. I think I will purchase new crocodile clips and make a new cable to give me more scope in positioning it. Some form of hooks would've been nice to hang off the side of the motorhome like a curtain.Now, I'm no electrician, but I connected it up on an overcast day, and it generated a small charge that raised my voltage read out on my battery by half a volt. I tried it out today, 27/06/19 glorious hot sunny day, and it was belting out 14V into my battery as read with a megger tester on the battery terminals themselves. Then I put a load on my leisure battery, TV, aerial booster and heating circulatory fan, and this reading lowered to approx. 12.2V remaining constant, so I guess it was a status quo, the panel was matching the load. When I have more info I will update this review, but so far I'm fairly pleased, the cable won't cost much to create.XXK have resolved my issue and I now have revised my review to 5 stars, this is a very practical solar solution for many who have limited space. It is a fine productFOLLOW UP. Since my review, I hadn't the need to use it, having always been on hook up sites. But because of lock down, my vehicle battery failed to start the engine, I got it charged and started, but now I had the dilemma that it would go flat again. So I finally got round to extending the cables from the solar charger to the battery crocodile clips approx. 2.5m of twin cable, allowing me to drape it across my windscreen, running the cable round and in through the drivers door and directly connected to the battery. It is working brilliantly, my battery is being constantly topped up and I know when the time comes I know it will start with ease.

We use this to keep out M/home batts topped up and they top up in no time at all.Easy to use (we use them behind the windscreen) good quality and it folds back down nicely

Bought these to top up my leisure battery in our campervan.Pros - lightweight and fold down neatly to fit behind the seat.Great value and they charge even in partial sun and through the front window (I lay them on the dash to get the morning sun.Very easy to set upCons - the lead from the panels to the controller is so short you can’t get the panels out of the van so I had to extend it.The controller itself uses a lot more energy than I realised so needs disconnecting when panels aren’t in use. Probably would benefit from a MPPT controller in future.It comes with crocodile clips which is fine if you are charging a second battery but I had to replace with rings so it could be more permanently wired in.They are not waterproof so you can’t leave them outside overnight to catch the early rays.

Arrived fast, high quality materials. I did not read the manual and had a problem. Sent an email and got a reply very fast from seller. Everything was in the Common Questions section. Perhaps will buy a second one to double harvest.The only thing missing is a kind of 'eye holes' to attach with a hook or a rope.