I've already got the 400w blanket and bought the 200w on impulse due special offer pricing. I have to say it's one of my better decisions and I'm going to mostly compare it to the bigger 400w blanket.

What's good: The 400w folds up really small and is light the 200w even more so and lighter - perfect for our motorhome.
The 200w is also half the size unfolded than the 400w so it's far more practical to just drape it over the bonnet or hang it from a fence, particularly if your stopping somewhere for only a couple of hours.

I rigged up a Heath Robinson frame made of 22mm plastic pipes for the 200w, and in October 2026 in a burst of sunshine got constant readings in the 190watts peaking at 195w. The frame is particularly useful in winter when the sun is low because I was able to angle the blanket at 70deg. As an illustration at one point angled i was getting 170w but when I laid the frame flat that dropped to 111w which illustrates the difference in efficiency during winter/autumn. It's less applicable in summer.

I already had a frame for the 400w and got 370w out of that at 70 deg. in October. The frames also make it easy to move the blankets about and follow the sun. Apparently it also helps with cooling due to circulating air both sides.

The downside is you need to carry a bundle of plastic pipes. We don't bother for the 400w but do for the 200w (less pipes). Our main purpose is to use the 200w to help 'top up' our lithium power packs. The 200w is useful in it's own right. It has built in usb ports. It can charge your devices direct (sun permitting).

The 400w I had problems with the loops pulling out so had to restitch and reinforce - no such issues with the 200w. We will still keep the 400w as the reserve and for touring but in hindsight I wish I'd bought two 200w blankets, then would have had the benefit of both worlds.

The blankets are also significantly cheaper than the suitcase/rigid types but the down side is the blankets are 'floppy' hence the frame. But the 200w being significantly lighter and smaller is easier to just hang up and orientate or just make a frame to support it.

I'm very pleased with my impulse buy and it's certainly a useful addition in a motorhome or campervan when stationary.

Driving we have an alternator charger for replenishing the power stations, but it's nice to know, if we are stationary for any length of time, we still have options with solar blankets to assist in recharging our power stations.

We stopped at the seaside for a few hours in October. Had a few coffees from our coffee machine and some cheese toasties on our George Foreman grill. The 200w was contributing about 135w but by the time we left our alternator charger (bluetti charger 1) only took 16 minutes driving to finish bringing the power station back upto 100%.

With the 200w blanket we are now able to have a charging method that compliments the alternator charger.

Very pleased main down sides are being 'floppy' coz it's a blanket which is why it weighs so little and folds up so small and it doesn't come with the MC4 to xt60 cable we needed to connect to our power station (although we had one for the 400w which we can use with either)

Did some tests in the garden in October, the 200w could recharge our 1kvh power pack (Delta2) from empty to full in about 6hrs (sunlight permitting of course) . If we really needed it we could bring out the 400w which could halve that. Realistically you only tend to run power packs down to 30-40% anyway.

Conclusion : Good bit of kit ideal to have in a motorhome or campervan even if you have an alternator charger

Delivered on time exactly what I ordered
Will do the job for solar power.

Just received 400w solar blanket and I thought I'd put it to the test on a dark overcast rainy day here in Kent. (today 4/9/25) My previous solar panel was 160w portable Ecoflow, immediate contrast, the blanket is half the weight, smaller and more compact and more than double the Watts. I had deliberately run my 1024wh Delta 2 down to 2% specifically for the test to see how the blanket performed. From 10am laid blanket outside and it was cloudy and overcast was getting 30-60w. Started raining shortly after and it got a good wetting, brought it in conservatory and laid on the flow wiped off the water, and got 23w. Rain stopped and took it back outside. First hour Delta 2 went from 2% to 5.3%. but after the first hour it brightened up. 2nd Hour it's upto 12.3% and I hung it on our fence. 3rd hour it's upto 24% , sun is partially coming out, i'm starting to see 320-340w from the blanket (with sunshine) . 4th hour Delta2 is upto 43% max 343w from blanket, from alternating overcast and watery sunshine. 5th hour Delta 2 is upto 60% and sun is starting to appear properly, blanket briefly touched 380w then 394w ! 6th hour suns gone back in and largely cloudy overcast only getting 60w-200w but Delta 2 reaches 71% . 7th Hour cloudy and variable 60-330w and I ended reaching 83% on a distinctly poor day (typical British weather day) for solar panels. Very impressed as it proves I can recharge the Delta 2 and in bright sunshine I believe I could charge from 0 to 100% in under 5 hrs.
Complaints : It was a bit windy and I hung the blanket from 3 of it's loops from screws I put in the top of the fence. I also pegged down the bottom part. I had also laid it flat for a time and pegged it out. Several of the loops pulled out, didn't seem particularly strong. Not an issue I will sew them back stronger .
Conclusion: I got this specifically for the Delta2 in our motorhome and the test is poor conditions has given me complete confidence that the blanket is a good recharge method whilst camping. The small size and small weight is an added bonus.

Very portable unit that can be quickly and easily deployed. Works quite well,surprisingly, even when partially shaded. Good investment IMO

It folds smaller than my hiking backpack and weighs barely anything. Perfect for squeezing into my campervan or taking on wild camping trips.