eco-worthy-us via eBay has
ECO-WORTHY SL3500 5120Wh Stackable Power Station w/ 3500W Solar Inverter (US-L02NK35KWUSL50DDCN-1) on sale for $1,449.99 - $400 with coupon code
ECOWORTHY2026 at checkout =
$1,049.99.
Shipping is free.
Thanks to Staff Member
Red_Liz for sharing this deal.
Details:
- Whole-home backup: 3.5kW output (expandable to 7kW) with UPS switching under 20ms for seamless power to essentials
- Scalable capacity: starts at 5.12kWh, expandable up to 15.36kWh
- Off-grid capable: quiet, zero-emission LiFePOâ‚„ power for RVs, camping, and outdoor use
- Durable & safe: rugged metal-cased LiFePO₄ battery with BMS, 3000+ cycles (8-10 years), operates down to -4°F discharge
- Smart & portable: app monitoring, stackable modules, wheeled trolley with telescopic handle
- Package Includes: 1x 3500W inverter/controller, 1x base stand, 2 or 4x 48V 50Ah batteries (wait for all packages before assembly)
- Note: PV/AC charging cables not included; contact [email protected] for base/layer bracket purchases or issues; wait for all packages before assembly
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Our community has rated this post as helpful. If you agree, why not thank WoodSlayR
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Here is youtube video tutoring how to wiring:
https://www.youtube.com/watch?v=eJBxMEp
After you get Victron Auto Transformer convert to 240V split phase, then you could hardwire directly to DOUBLE BREAKER 240V of your breaker panel. Or you could install power input box like mine here: https://ibb.co/7twW8FNB
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EDIT:
A review:
https://youtu.be/4Jnb1fAj6uc?si=
Seems to get more wobbly when you want to hook a ton of solar to it and require more tinkering if you intend to drive it into the mains during an outage. Don't think it changes much for someone like me who just wants it as a stand alone unit though.
Also note that you have to manually wire the AC input and it doesn't come with that wire; it'll also default to 40A which will trip your breaker, but I don't think that is hard to change to 20A.
Things they need to fix: AC charger (40a default for a mobile unit - obviously people are going to try charging from a 15a outlet), PV charger (60v-145v only - people having issues with voltage over 100v), battery disconnect (should have an over-current breaker)
Also, if you want 240v, you will need two inverters and have to use the hardwired ac out to set it up. At that point, you might as well just buy two of their 5000w 120v inverters to do the same thing with more output for about the same price. The only convenience here is that you already have some outlets to work with.
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