Has anyone made a circuit board or found a product that you can plug your board battery’s XT90 into and it is able to up it to 120V for charging laptops and the sort as a backup power source? I’m in SC about to get hit by the crazy ice storm so this is on the mind. If there is something I might be investing in the future. Thanks in advance!
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I’ve put thought into this and it seems like there’s two options.
Step your boards voltage down to 12V or 24V then use an inverter for a car/RV. You’ll need ~42A @ 12V to get 500W for example. That’s a lot of current to convert
Use a high voltage inverter but those are rare, expensive, and big
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Jumping off this and leaving out the AC Inverter usage, for charging a laptop type stuff, DC usage, would just having the right step-down converter for whatever voltage you need per device be enough to use the board as a big battery bank ? Or would the power be too dirty/other problems for that usage?
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This would work fine. If you don’t need AC then all this becomes almost trivial.
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Cool, I was picturing doing a 5V one in a box with a buck converter and one of those little usb c port breakout boards
I have a 12v invrter and some 12v lead acid batteries.
If they were to run out I have this bucker/step down converter which I would use to charge the lead acids rather than try to power inverter directly from esk8 battery.
I have only used this bucker when I was injured or couldn’t use esk8 to discharge full charged battery which I did not want to leave fully charged.
If discharging through Xt90, no BMS to protect from overdischarge on my boards.
My charge port can only handle 10 amps
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I know it would be a lot of energy lost as heat, but would you just need a heavy duty buck converter to get it down to 12 or 24V before using the RV inverter? Also would the buck converter be able to compensate and maintain 12/24V as the battery drains? If it’s not a crazy task I may try to put one of these together in the future just as a backup option.
Yes this would be critical and a default feature of a buck converter
This is what I’d use if I had to.
You can find power inverters intended for solar panels, and so have a wider input range. This one runs from 30V-45V DC, which covers a 10s pack, for example. You would install a parallel port in the side of your enclosure and bring the brick in a backpack with you.
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