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Joined 16 days ago
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Cake day: July 9th, 2026

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  • There is some inefficiency in charging a battery but not that much. Main losses would be that the solar panel isn’t actually outputting 30w as you won’t be getting ideal conditions all day.

    But it doesn’t necessarily matter either. 65w to charge a battery but you only need it once a week for an hour can easily be managed by 5w all day for a week.

    Though planning for an apocalypse is kinda pointless anyway. Preparing for a disaster is more reasonable, such as a storm knocking out power for a while.




  • See that is where I find they ca get more useful. When you have a non emergency use for them as well.

    I haven’t had a powercut for more than 5 minutes in my entire life. Have wondered if power at my allotment shed is worth setting up but not super keen on spending many hundreds/thousands it would take for any garden power tools and a generator would probably be a better option.

    Lower power things might not be so bad. Though I really hate how modern powertools use proprietary batteries and each brand uses a different one. A powertool battery charger could be a modest size solar/battery setup.






  • I kinda want to get some solar for USB power, largely phones/tablets. But it doesn’t really make much sense to for me currently. Just getting another battery is a better choice and something I actually use. Solar would only make sense if I planned to need to keep recharging for an extended duration.

    But at the same time solar is pretty cool… What else can I power to make use of it. Of course full home solar makes sense. But small portable stuff seems cool and affordable. Just don’t really seem like it makes sense.