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

I wanted a portable solar panel to charge my Jackery Explorer 1000 V2. The price was great. Already a good deal at $100 compared to other 100w panels, I was able to get this on spring sale for $70. This comes with multiple connectors, including a DC7909 which will works with my older Jackery explorer 240. However, the Jackery Explorer 1000 V2 needs a DC8020 connector. I needed to get an adaptor (https://www.amazon.com/SinLoon-Adapter-Connector-Compatible-Explorer/dp/B0C6P6X5YP?ref_=ast_sto_dp) but everything works perfectly. It's solidly built, folds down to an easily portable size, and seemed to be charging the explorer well in the sun (70+W in the sun). Pleasantly surprised at how well this work so far.

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.

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!

Tried this panel with my eb3a bluetti and i found it worked great and got 75 watts in full sun at 1:00pm i didn’t try too hard to get the max sun. It does appear that if you have 3/4 panels pointing to the sun on my car dash the eb3a bluetti would not register charge but if all panels were exposed to sun because the length doesn’t fit my dash that it would show 20 watts of charge coming in.Overall all not a bad budget panel, tad flimsy and if it was windy… not sure it would hold up too well in a breeze is my prediction without anchoring it.

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!