20KWh DIY RackMount Backup Battery for Half price

Excellent project. Only drawback is that the scooter batteries are li-ion, which are quite more dangerous compared to the LFP cells the Jakiper batteries use.

That's pretty sweet, you just keep making it easier. I already did a 3kh build with the R5 batteries for my office which I made a video for. My next build will be with LiFePO4, cant wait for those to become more affordable too.

Very cool. Unfortuantly I have already bought my scooter batterys awhile ago when we would clip off the white connector and replace with a xt30 to wake up the bms.

Thanks for your upload, I have always liked your "cowboy/no fills" apporach to DIY - it resonates with me.

Very informative. I was wondering how to get parts as I might build something similar but different from your designs. Thank you for the video

Wow great video! Thanks for sharing and answering those questions! Awesome Job 🤓👍🏻

Hell ya jehu always coming thru with the best diy content …NMC is still a great chemistry🙌🏽🙌🏽🐐🐐🔋🔋👑

I would probably drill holes in the back and all along the back install external case fans. This will help keep the batteries from overheating.

This pcbway channel is one of my faves!

THIS is what I want: a cheap system I can add to as I go! Thanks

Very cool! It looks like a fun build.

Points of concern: 1. The front mount lug connector (thru-hole) is only a small air gap between case. Air gaps quickly disappear on flexible frames and tensioned lugs, not counting accidental damage to either, there should be physical isolation there. 2. PCB should not be used for anything structural beyond its own weight. You put high gauge wires on that and you will be putting torque across the PCB, over time it will flex, crack, and likely tear at some point. 3. I don't know the schematic or spec of batteries on that but I have a general dislike of direct connect systems like that. Without a BMS or monitoring like the other one, it almost certainly will not last as long.

I would like to see this build as a LiFePo4 48v with the same features. That would be a much better comparison for off the shelf vs diy. Other than that, great video.

Great video! I really value having a reliable backup power solution at home, especially when I'm out camping or spending quality time with my family. The Segway Portable PowerStation Cube Series seems like the perfect choice with its massive capacity, fast recharging, and versatile sockets. Plus, its waterproof technology gives me peace of mind during outdoor adventures. Definitely considering getting one for myself!

Brilliant I'd keep any whole house or otherwise substantial energy storage out in the garage, even if had to build and heat an enclosure just to be safe. It's a lot of energy and that's always a fire problem. I've just bought a pre made Battery Queen 4.8 kwh at 25 cents a watt, and a EG4 3000 watt inverter, transfer switch, charger to play with before committing to 20kw system and probably PV to power it up (and otherwise power up low load emergency circuits in house. An emergency power system that requires no maint, no fuel, AND pays back a little every year. WOW

yet another clever idea

Working hard to understand this setup style and concept better. This would be ideal for what I dreamed up in my head. Built to add capacity more over time.

Great help, more options.

You should do a video on how to discharge batteries during peak demand hours. A big problem in Arizona is the power providers hit us with energy costs that are like 100x during "peak demand hours". We need a solution to charge during cheap hours and then offset demand during peak hours.

I like this idea and it seems like a great kit however I didn’t see you using any grommets for any of the metal openings