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the sustainable use, production, and storage of energy, through efficiency, conservation and renewable resources. Use this tag for questions on energy in general.

2 votes
1 answer
2k views

How long will a 12V Koolatron compact cooler last with 12Ah battery?

I'm thinking of purchasing a Koolatron P20 compact cooler and this ExpertPower 12200 battery How long will cooler last with this battery at full charge? Is this the correct battery to use for this? …
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  • 371
1 vote
2 answers
168 views

Powering a small apartment

I recently saw a sale on EcoFlow products (in this case, an EcoFlow Delta Pro Ultra Starter Kit) so I decided to contiue researching ways to power up my small apartment without having a rooftop full o …
rbhat's user avatar
  • 371
7 votes
2 answers
464 views

Anything similar to GravityLight that can be readily purchased?

Ever since it was first mentioned in a popular news site, I've always been interested in GravityLight. But I've never been able to go to a store or a site and just buy it. Is there anything vaguely s …
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  • 371