ECO-WORTHY 400 Watt 12 Volt Premium Solar Panel Kit :4pcs 100W Solar Panel+ 40A MPPT Charge Controller+ Bluetooth Module+ Mounting Z Brackets, 400W 12V Solar Power Off Grid System for Home, RV, Boat.

Really impressed with the output and efficiency of the panels and controller. Bought these to upgrade my solar setup from one 100W panel and 100ah of batteries to these with 450ah and the panels and controller and they have definitely exceeded my expectations. In full sun I'm getting over 400W to my batteries . The price is also fantastic, got them on a limited time deal for $330 but even at full price they're completely worth it!

Bought it for my husband's garage. He set it up, it seems to be working, so yeah, good purchase!

Good deal working in Cuba

I installed this system adding the four pannels with the two I already had. These pannels produced about the same power as the other ones I had, so that was good. The charge controller seemed to get pretty hot, even though I was nowhere near the limits of it. The load function did not work consistently. The Bluetooth module did not come with any useful instructions, so I had to rely on contacting EW through Amazon to get that resolved. There app did not work and had to use a 3rd party one. I did not use the wire, but the brackets worked well.

Everything has worked well all winter long except for the Bluetooth app that never would sync up

Well packaged. They seem to produce a lot of power, even on cloudy days. My battery is always full, so far. I wired them in series. Have not tried the Bluetooth thing yet, but the controller works well. They sent cables way too thin to run from that to the battery, though. Had to buy a thicker gauge. It would be nice if this kit came with the necessary fuses, but all-in I’m happy with the purchase and would buy this brand again.

Do not buy this thing. Try another brand. First, p*i*s*s poor instructions. They tell you to get an electrician and damn little after that. I could not find one in my small town that would do solar. I had to watch about six Youtube videos, call the company itself, and still was winging it. Second, whoever designed the charge controller learned their trade back when Einstein filed his first patent BC the freaking connections for ALL your wiring are so screwed up I almost quit. I had to buy a whole new set of wires, crimping plyers, and two different sets of hollow copper casings just to get the wires to fit in securely. Did I mention the instructions SUCK?

Package arrived safe and sound with no damage. I haven’t tested it yet, but I’ll update this review when I do. Very excited!!