HQST Bifacial 100W 12V Solar Panel, 9BB Monocrystalline Solar Panels with 25% High Efficiency Module PV Power for Battery Charging Boat, Caravan and Other Off Grid Applications

These things are freakin awesome! I get over 100 watts at peak solar gain hours, and they have proven to be tough as nails. Had a 6' step ladder fall on them, but nithing broke. Also had the wind rip them off a temporary/portable mount, and fling them on top of each other, with no damage. Forget flexible panels, and figure out how to mount these units on your van, RV, or boat, if you just need a small system. I am running three of these, through a cheap (Renogy) PWM charge controller, and feeding into a 100ah lifepo battery. Runs my fridge, charges all my devices, cordless tools, fans, and anything else I need. Excellent product. Excellent value.

I bought these panels for two reasons: The price and the size. I have actually bought 16 of these panels - 4 different times I've purchased the 4-pack of 100 watt panels. They are nearly $100 cheaper for the 4-pack today than they were when I bought the first 4-pack. As of March 18, 2023 they are $274.99 for the 4-pack of 100 watt panels and there simply isn't a better deal for new panels than that anywhere. The other thing that steered me towards these was the size. I wanted to be able to take these with me - at least a few of them - on the road if I needed to and as someone who doesn't own a truck or a van, these panels were the perfect size for being able to toss them in my car. And they are rather light weight, too, on a single panel basis at just over 13 pounds. As for the panels themselves and how they work - they work great. During a clear day, at peak sun, I will get anywhere from 97% to 102% of the rated output of the panels. In order to get that kind of output you are going to need to dial in the angle of the panels, but if you do get it right you can get the full output with these. The only "con" to these panels is that the MC4 cables are a little bit short. You have plenty of room to connect one panel to the other when they are next to each other, but compared to some other brands they are a bit shorter cables with less wiggle room for your potential set up. As noted though - you shouldn't have any issues connecting one to the other if they are next to each other. This "con" is very nitpicky, but it felt worth mentioning as not every person purchasing them will be mounting multiple panels that are touching each other. If you are in the market for 100 watt panels then I would very highly recommend these.

Good Panels, that so far seem to perform well. My only complaint is that the connection cables are a bit on the short side. The cables are fine for having panels side by side, but not all solar panel installs are like that, like on a van or rv roof with a fan and/or ac unit on the roof. I wish the cables were another 12 to 18” longer, or they had option choices on the same page to add extensions. The panels do perform well though.

So far so great! For the price you will not do better. These are double sided (in short on the back side they capture reflected light and boost the overall output. I am getting well over 100 watt on these 100 watt panels). I am not sure how long they can maintain such a low price, however, one panel is a great price and two panels bought together is over the top amazing. Super simple standard connectors and if you need straight wire connections the wire quality is great for stripping and utilizing (this most likely voids warranty, with that I can see no reason why you would need to use the warranty as the panels are solid and well built. As for the double sided feature, the concept calls for the panels to be mounted off the surface so that reflected sun light can hit the underside. So if your brackets are up allowing light to get underneath these are for you. You do need a controller, pick a good one. PWM controllers are not as efficient as MPPT. You pay more for MPPT and it is well worth it (look for deals). In my specific DIY application I am doing a 360 degree rotational rig so that the panels are always facing the sun. For seasonal adjustments I will set the pitch (or seasonal angle manually 4 times per year, i.e. Summer Winter solstice and spring and fall equinox). ~20 degrees to about ~40 degrees towards equator). I am using a slow high torque motor and a timer (motor speed .6 RPM the timer is on 4.17 seconds every hour). A slip ring keeps the power line from twisting. Fun little project.... Be well!

Great product works great for my little back up system.

Bought these for our eco flow.In case of emergency.I had an older panel of this same brand and it worked really well. After purchasing one of those foldable solar panels 200 W. And only getting 85 I decided to go back to these glass panels. They might be a little bit more bulky but in an emergency, it'd be perfectly fine. I only set them up against my patio chairs to test them. They're not that heavy really. About 10-12 pounds apiece. I'm very happy with the results 187 W they were pulling in at approximately 11:30 AM. I had two 100 W panels connected so I'm very happy with 187.watts. I highly recommend this brand. I believe they make a good quality product.I liked them so much I bought 2 more.was getting 101 watts from one 100 watt panel! Cant do better than that ! Five stars for these!

I caught these panels on sale and wanted to try them out for a DIY emergency solar setup to use for when the power goes out. These panels performed really well with my Victron charge controller, a LIFEPO battery and 2000 watt inverter. I used them to run that setup and then tested them with an adapter cable to charge my EcoFlow River 3 Plus power bank. I bought 4 of them and now I'm thinking of adding some to my camper to keep the batteries charged while in storage.

I've installed a few of these directly connected to a water heater heating element -- easier than making a solar water heater(and dealing with the quirks that setup would entail) -- and they seem to heat my water okay. I sloppily layed them down, so I know i'm losing a good bit of power by not reaching the maximum power point(mpp), but my water is warmer than the input so I know these panels are working.

Entregado el día correcto,espero que vaya bien, pues ya he colocado otra como está y va perfectamente, así que e😋Ya la he probado y funciona perfectamente de momento muy contento con la placa.

C'est le dixième module que je commande. Rien à redire, livraison sans problème en 48H, bien emballé. Il est donné pour 100W. C'est la théorie, face au soleil (1H avant et 1H après ça décroit) sans nuage, atmosphère claire d'été sec. Face au soleil ça veut dire perpendiculaire, quelle que soit la saison et l'heure. A plat sur le toit d'un camping car l'hiver, ça sort 10 watts. On y peut rien, c'est normal. Donc ne pas réver. J'ai 12 panneaux, pour ma pompe de piscine, ça va l'été de 11H du mat à 15 Heures. Après c'est 1/4 de temps grâce aux batteries. Ce panneau seul ne suffit pas. Achetez en plusieurs. Un micro-ondes prend 750 watts. Donc tenant compte des pertes, il doit charger la batterie 2 heures pour cuire des patates pendant 10 minutes. Mais c'est un panneau au top pour la technologie 2018.

We needed to replace a panel on our narrowboat and this product fits perfectly and works very well alongside the existing panel. The order was delivered next day and I was impressed with HQST service.

Grazie Amazon per la velocità di spedizione e pacco integro in tutte le sue parti. La recensione è ottima su questo pannello e lo consiglio a coloro che vorranno acquistarlo. Appena montato sul Camper ha cominciato a lavorare nel migliore dei modi. Soddisfatto in pieno.

Leider handelt es sich nicht um ein Panel wie auf dem Foto zu sehen, sondern es ist ein Panel auf einer Plastikscheibe und es ist somit flexibel