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Lion Energy has Lion Energy GO 20 Portable 20W Solar Panel on sale for $8.50 when you apply discount code BN during checkout. Shipping is free.
Thanks to Community Member xjimmyx for sharing this deal.
About this Item:
Lion Energy has Lion Energy GO 20 Portable 20W Solar Panel on sale for $8.50 when you apply discount code BN during checkout. Shipping is free.
Thanks to Community Member xjimmyx for sharing this deal.
About this Item:
- 20W Solar Panel with Monocrystalline cells
- Dual USB 11.8" connector wire from panel to Lion Cub GO with max current output of 8A
- 2 USB 5.34V @ 4A outputs
- Dimensions: 18.4" x 14.3" x 1" (L x W x H)
- Weight: 3 lbs
Editor's Notes
Written by qwikwit | Staff- About this Deal:
- This matches a recent Frontpage deal.
- Rated 4.8 out of 5 stars from 32 reviews.
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Update: This deal is still available.
Lion Energy has Lion Energy GO 20 Portable 20W Solar Panel on sale for $8.50 when you apply discount code BN during checkout. Shipping is free.
Thanks to Community Member xjimmyx for sharing this deal.
About this Item:
Lion Energy has Lion Energy GO 20 Portable 20W Solar Panel on sale for $8.50 when you apply discount code BN during checkout. Shipping is free.
Thanks to Community Member xjimmyx for sharing this deal.
About this Item:
- 20W Solar Panel with Monocrystalline cells
- Dual USB 11.8" connector wire from panel to Lion Cub GO with max current output of 8A
- 2 USB 5.34V @ 4A outputs
- Dimensions: 18.4" x 14.3" x 1" (L x W x H)
- Weight: 3 lbs
Editor's Notes
Written by qwikwit | Staff- About this Deal:
- This matches a recent Frontpage deal.
- Rated 4.8 out of 5 stars from 32 reviews.
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+73
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Top Comments
In afternoon sun I got about 24W (13.3V at 1.8A) from the 2 in series which is less than I expected for the conditions, but maybe it was a bad connection (I was using alligator clips to temporarily connect the wires). A 100W rigid panel in the same conditions was getting 75-80W.
If you leave your phone or power bank you'd want them out of the sun. If you put it under the panel's shade make sure the panel is propped up to allow airflow underneath or your phone will bake.
First of all, taking the cover off the back of the panel is a destructive process. The plastic cover is screwed to the PCB from the side that's facing the panel on two opposing corners, and the PCB itself is glued to the panel making those screws inaccessible. You could probably drill out the screws by going through the back of the cover, but I wasn't in the mood for making a replacement cover. I did manage to get the end cap off which is just a snap-in fit over the USB A ports and I was able to see that each USB A output is fed by individual buck converters (2x inductor + 2x unidentified 8 pin chip). So they're not just linear regulators at least, which is nice, and the dedicated buck converter for each port means you can sustain higher current when both ports are in use.
I then tested it with a variable load in full southern california sun at solar noon with the panel pointed straight at the sun, and found that each USB A port voltage starts falling below 5V when it pulls anything north of ~1A. It holds 4.8V pretty well up through 1.8A, and once you get up to 2A it drops to about 4.5V. I was able to push it up to just north of 4A before the voltage fell off a cliff, but at 4A the voltage had dropped to very close to 4V. Long story short, any device plugged into the USB A port is unlikely to ever pull much more than 1.5A just due to the voltage drop, even at peak solar output.
That's not the whole story through, because I repeated the load test with a power bank charging from the other USB A port. The power bank was only pulling about 1.25A at 4.95V, but it kept pulling that amount even as the other port approached 4A. Even better, it maintained 4.95V until the load from the other port completely swamped the panel's output, at which point both ports dropped to < 2V of output. The peak output I saw is very close to if not slightly over the 20W peak output claimed for this panel. Unfortunately, due to the way USB charging works (e.g. devices tend to pull as much as they can until the voltage drops to around 4.8-4.9V), it's very unlikely that you'll hit 20W even with 2 devices charging in full midday sun. The buck inverters just aren't up to the task for 2A of output while maintaining 5V, but that's not the panel's fault...with a proper regulator connected to the unregulated micro USB ports I'd imagine 20W is pretty doable.
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I also did a basic test of the USB-A ports. Under the same conditions where the panel was producing over 16W unregulated, the USB port would quickly drop below 5V if I tried pulling more than 2A from it. Max wattage was around 10.3W at 4.3V/2.4A. I don't think the 4A per port for USB-A is accurate if it can't produce anywhere close to 5V 3A when the panel is receiving 16W.
Mine did.
All you have to do is copy and paste into UPS website.
So the way I see it, 20K mAh each, x2, converted to kWh (40K mAh x 5V ÷ 1M = kWh) is 0.2kWh. So multiply that by my local rate of $0.10/kWh, and that means I save $0.02/day by charging both to full. $9.54 was my cost after tax, divided by $0.02/day = 477 days/charges. So realistically, at or under a 2-year return. Yes, I know this will basically kill my banks in that time span. That's why I stock up anytime I find any at around the $5 mark, or $10 for large ones. I have plenty still sealed and on standby to replace them.
I don't want a bigger solution. My setup HAS to be portable and be able to be brought indoors in seconds. Anything less/permanent panels aren't an option here, we get rain at a moment's notice and see softball size hail... This is more an experiment/fun than trying to go green. Another key reason is to have a way to charge phones if power is out for an extended period of time (which is more than I care to admit thanks to our extreme weather).
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I'll post some pics with what I find.
Me thinks these panels were custom made for Lion energy and bcuz they no longer make or sell the cub go and the funky cell setup they can't be easily repurposed, thus give away price, after factoring in free shipping they might be losing money on these at this price - seems like they just want them gone lol
This panel will likely prove a winner for generic power bank charging with a change or two since the Lion Cub was basically just a big power bank with an unusual charging arrangement.
in for 2.
cheap emergency charger.
i guess better than the foldable ones on amazon.
Returned in a month, cause waste of money
It needs a strong direct sun light to generate pennys of energy
It's nonsense to leave this outside, because you will damage battery faster under heat than make a profit of sun energy
Seems like a no-brainer.
This is cheaper than a pack of cigarettes where I live. I'm personally not going to calculate payoff periods for lunch items such as this.
FYI, they screwed up on my orders and sent them to my billing address, not shipping address. I used Apple Pay to check out, because I was driving when this went FP, but I checked my order emails and the shipping address was correct, they just sent them to the billing address for some reason. Not a huge issue, but had to get the neighbor to go grab them for me lol
Can anyone list some of the KNOWN powerbanks that can be charged and discharge at the same time?
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Direct sun and heat will destroy powerbank
Long wires to power bank big lost
What scenario this panel can be effective
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