Topsolar 20W 12V Solar Panel kit Battery Charger Maintainer + 10A PWM Solar Charge Controller +Solar Cable for Car RV Marine Boat 12 Volt Battery Off Grid

Excellent working perfectly .. my ferret house is now totally off grid .. the system is running 2x fan's and 6 led strip lights .. well worth the money

I bought this solar panel to trickle charge a car battery in the shed. I use the battery for a 12v lighting system and a small inverter as I have no mains power in there. Its May at the moment and we do have a reasonable amount of sun but I have to say the panel is doing an excellent job of keeping the battery topped up.The panel doesn't have much in the way of mounting brackets, there are simply four holes in the inner surround of metal. It was a bit fiddly but with use of some suitable nuts and bolts I fed the bolts through the holes in the surround, through the wall of the wooded shed and put washers and nuts on the inside. I then put a bead of sealant around the panel to stop the rain dripping down the back.Although fairly generous the leads from the panel to the power controller were not long enough for me so I ended up extending them which is straightforward enough just ensure you get the polarity right. Its worth using good quality wire as thick as that supplied (at least) so you don't get too much of a voltage drop.The power controller isn't the best or the most complex but I found the default settings work fine for my purpose, just follow the instructions to connect everything in the correct order. You can alter the charge voltage and cutout voltage if you wish. The screw fittings for wires on the controller are a little unconvincing but seem OK in practice.At the price point I'm pleased with this panel and I now have exactly the setup I wanted in my shed.

Mounted in the wheelhouse of my boat to keep 90aH battery topped up! Handy USBcharging points on the control panel for charging mobile phones and tablets. Well proven over nearly two years since purchase.A little bit more delicate and flimsy than I expected. Different and/or alternative mounting options would be useful.

Bought this to set up some lighting in my shed. Fairly straightforward to fit it all together although the instructions are tiny and I had to look up most of the terms. Had to replace the batteries on the wife’s mobility scooter so the old ones will be useful just for lights. So far so good, it all seems to be working OK after a couple of weeks, battery staying charged enough for lights. Made a wooden frame to attach the quite sturdy panel to the side of the shed (not much direct sunlight this time of year but will be in a few weeks time) and put the controller inside. The lead was a bit short so extended it using some 13 amp twin and earth electrical cable which seems to work alright. Overall a good buy for the price and useful as my first foray into a solar power project and my led light strips work fine, who knows I may be expanding it soon!

Keeping the caravan battery charged while in storage

Long delivery time but exactly what I wanted very happy with the panel ..well made well packaged and very happy with it ..bought for a boat where size and space for fit was crucial it ticks all the boxes for me

Be very careful purchasing this , it could have burnt my boat to the ground

I have bought a few of these and they seem to work very well I have a couple in my van which aren't used very often and it seems to keep the battery okay

J'en ai acheté un pour essayer.J'ai 5 clôtures électriques à 5 endroits différents, au milieu des champs.Cela fonctionne tellement bien que j'en ai acheté 4 autres.Et tout marche parfaitement (avec 5 batteries 12V 7Ah) depuis un an.Les batteries sont chargées même en cas de temps couvert ou pluvieux.Je recommande.

Bien funciona bien

Works as described little on flimsy side would recommend and purchase again no complaints as it does what it says and reasonable priced prompt delivery

Ich habe damit eine kleine Insellösung für meine Garage geschaffen: mit 20Ah Gel Batterie und LED Strahler mit Bewegungsmelder.Wichtig: ERST die Battrie anschließen, DANN die Solarzelle an den Laderegler. Sonst macht der schnell Probleme!Schließt man ausschließlich die Solarzelle ohne Batterie an kann das Teil innen schnell zu heiß werden und abschalten oder gar durchbrennen.Ist mir natürlich passiert... Aber am nächsten Tag konnte ich das dann erneut anschließen und dann ging alles wieder...Für den Preis ist das ganze Paket absolut empfehlenswert!

I purchased 2 of these to maintain two car batteries (20 Watt + 10 Amp solar controller).PROS: I measured up to 37 Watts (2.6 Amps x 14.4 Volts) under direct sunlight from one of these small panels. The solar controller works nicely with these panels and can safely handle up to a 100 Watt panel. The wire length from the panel (~18 inches) and to the battery (~24 inches) is a good compromise. As stated in the review title, one of my batteries was at 11.7V and one of these panels was able to bring the battery back to a steady 12.5V over a 2-day period (to be fair, the battery is already 7 yrs old and is nearing the end of its life).CONS: (a) The cable screws in the solar controller are small and one has to be careful not to over-torque, and at the same time being careful in that the cables actual catch and hold tight. (b) The solar controller is supposed to be user-settable for the max voltage (I set mine to 13.8V) however, they keep charging up to 14.4 and settle at that voltage. Not a big deal for standard car batteries but could be problematic if someone is using a more exotic type of battery.OVERALL IMPRESSION: while a bit pricey for what you get (~$50 each), I'm quite pleased with the Kit and do recommend it as a way to maintain your batteries.