• Noble Shift@lemmy.world
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    7 months ago

    I’ve been living off-grid fulltime for 6 years now and that answer is completely and thoroughly wrong. Not just wrong but completely missing the fact you’ll need at a minimum a 2000w inverter.

    You’ll get 2 hours of usage AT BEST from a car battery, and if it’s lead acid, Gel or AGM chances are you will irreversibly damage (even if just slightly) the battery if you let it run until dead dead.

    LifePo4 FTW!

    • cmnybo@discuss.tchncs.de
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      7 months ago

      A car battery shouldn’t be discharged at all. They are meant to supply a short burst of power and then be charged back up again.

      A deep cycle lead acid battery can be used to run an inverter. They can be discharged to 50% capacity while still providing hundreds of cycles. If they are used for a backup and are not cycled frequently, they can be discharged to around 80%, but they will provide a lot less cycles.

      A LiFePO4 battery is definitely the better choice for anything that needs to be cycled frequently though.

    • Tbird83ii@lemmy.dbzer0.com
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      7 months ago

      So if I turn the car battery upside down, a 12v DC battery should run a 120v AC appliance?? Brilliant! I have an idea for how we can use this with two fans to create infinite energy!