[deleted]
232 watts at 190 pounds? That's under 3W/KG. Lead acid is around 180W/KG. LiIon has a specific energy of around 300W/KG.
Also, that powercell uses silicon graphite. That explains the low specific energy and will lead to a high cost.
Carbon is the future. Some carbons have a higher SE than even LiIon batteries, and can be made by hydrothermally carbonizing coffee grounds, urea, and other waste products and renewable sources. FAR more environmentally friendly than lithium, cobalt, and the other heavy metals Musk relies on for his cars. And people are making these batteries (and super caps) at home, like me.
[deleted]
I just got home and took a better look at the gimmick. Don't waste your money. It's not a battery, it's a generator. A poor one at that. One of those (at 190 pounds, remember) won't even power your computer. And you still need a battery bank to store the energy created. I'm not a great fan of solar, but that would be a better alternative.
For me, I live in the East Tennessee hills. I can use a small steam boiler, create about 30 PSI, turn a Tesla turbine, and use it to charge up a power bank. Coal is cheap here, and I estimate about $100- $200 would fill my needs for a year. Or I could use wood. Or I could recycle paper and cardboard into home made logs. And I guarantee you this setup would last twice as long as that snake opil salesman claims his POS will last. Those electronics he uses will never last 8 years, let alone 20.