【240W Flexible Solar Panel 12V Kit】KOLLNIUN 2 Pcs 120W Flexible Mono Solar Panel+30A Solar Charger Controller+T Branch Connector+Solar Cable+Metal Cable Tie, PV Solar Module for Balcony RV Boat Camper

Good product however the Regulator screen does not work propery

This is a great value solar starter kit that it ideal for first time solar D-I-Y'ers!Included with the kit are 2 x 120w flexible solar panels, a PWM 30a charge controller, MC4 leads, battery connection leads and MC4 2 way connectors and ties.The flexible solar panels make mounting extremely easy, either on a permanent or non permanent basis. Each panel has metal mounting holes which allow you to secure the panels with ease. The panels are super lightweight meaning they they can easily be relocated according to your requirements. Set up of this system is super easy and any competent DIY'er should be able to do this easily.I have to confess i have not used the included charge controller, PWM is the older style controller, i would highly recommend you upgrade to an MPPT charge controller, you will find your daily yield will increase due to the algorithm applied and the way the voltage and amps are managed. However for a very basic first time set up the PWM controller will do it's job and easily charge a 12v battery without issue.Due to the fact i ordered this kit in late December, the sun has been poor, with many cloudy grey days, so testing the output of these panels has been challenging. A couple of days back we had a very brief spell of half decent sunlight and these panels performed very well considering the weather - i had them connected up to a Victron charge controller and was yielding 117w at one point. I look forward to using these panels in the spring and summer months when the yield should be significantly higher. Connected up to my lifepo4 battery these panels should charge it within no time!I feel this is a great value kit, and the lightweight flexible panels make it just so much easier to move the location of the panels to almost 'follow the sun' maximising your solar yield.I would recommend this solar kit!

Just discovered that only one solar panel is producing power

I have not managed to test these fully yet as I need to get the brackets sorted on the van but testing on the ground they were producing around 200W on a bright winter day in the UK so should be fine for their intended use to keep the van ticking over when not hooked up. All the cabling is included for a fairly short run to the controller which usefully has a couple of USB ports for charging devices.

Monocrystaline (Rigid panels) optionA nice starter set for solar charging/control of a 12V battery solar power system.The panels are solidly made and come with ‘Z’ fixings to attach to a board /stand /roof rack etcAs each solar panel's output is as high as 22V and the most the charge controller can accept using a 12V battery system is 23V according to its instruction sheet the only option is to Parallel the 2 panels (+ to + and - to -) which increases total current output but still outputs 22V max.Y connectors are provided to do this at the Panel end and then use the 2x 5m cables back to the controller. The supplied Panel to Controller cable is about 2 mm² CSA and of aluminium appearance which would be regarded as a good choice up to 11A over a short distance with some voltage loss then being accepted during sunny-day high rate Solar-chargingFor more Efficiency or longer Panel to controller distances a bigger cable size can be substituted (its best to replace, rather than add to, the supplied cable) with 4mm² cable increasing efficiency and minimising voltage drop (i.e. power lost) over distances than can then be up to 10 or perhaps 15 metres.The controller accepts the Solar Panel Input on the Left Hand connector set( with Solar panel’ symbol). It’s often best to NOT connect it up until after you’ve first connected the 12V battery to the panel so it starts up in 12V mode and knows what to expect.. Ensure you maintain the correct + and – cable polarity in all connectionsYour 12Volt battery can connected via the supplied 1 mm² crocodile Clip cable (Or again a swap tobigger cable is better for longer distances) to the Panel’s centre terminals (Battery symbol)Once powered up by the battery you first need to enter the Menu and correctly confirm or select Lead Acid (B1) Lithium-Ion (B2) or Lithium Iron Phosphate B3 (incl LiFePO4) battery charging /voltage profiles to match your battery type / specification.As is common with these types of controllers you can then switch loads on/off with a basic dawn-dusk /night light timer and draw power from the right hand set of terminals (Bulb symbol) or the two 5V USB sockets (5.1V on test) . Solar charging status, battery Voltage etc is displayed on the LCD.Full Necessary details to complete set up are in the included User's manual /Guide.In the dull days of winter the maximum 240W (2x120W panels) of Solar Panel power is of course never going happen but even mid afternoon on a dull December day in those conditions I saw around 18V voltage and about 50mA current per panel so in total this system would be more than capable of keeping a battery float-charged for emergency use / a vehicle in storage etc. In full summer far more power would be available for daily charge / discharge useI should note that one of the two solar panels in my kit did not initially work at all and popping open its connecting box quickly revealed one of the panel connection tabs had not been soldered as it should have been. Once this was re-done it worked too with the same performance as the first.As this kit was a free preliminary review sample no stars are deducted as I’m guessing it’s a one-off problem in early production (checking on the other panel it was all done absolutely fine) but it shows it’s just worth testing your panels separately before linking them together.A very nice starter set for solar energy from a 12V battery system. Good for winter storage top-ups and in mid summer should be able to supply a considerable power for camping, emergency and outhouse use.