5 months old - (2) Eco-Worthy LiFePO4 12V 280Ah Lithium Iron Phosphate Battery With Bluetooth -

Been following this thread with interest because I went down a similar rabbit hole last year when I was speccing out storage for my garden office build.

The Eco-Worthy units were on my shortlist — the Bluetooth monitoring looked genuinely useful on paper, especially when you're not physically near the install. What put me off in the end was the uncertainty around the actual cell quality inside. Marketing specs and real-world performance can be quite different animals, and at five months you're really just entering the period where any weaknesses start to show themselves.

What I'd be watching closely at this stage:

• Capacity drift — are you actually getting 280Ah or is it creeping down?
• Cell balancing behaviour — does the Bluetooth app show individual cell voltages? Any stragglers?
• BMS behaviour under load — any unexpected disconnects?

I ended up going with Fogstar Drift cells and building my own 280Ah pack for the office, partly for the flexibility but mostly because I could spec a Victron SmartShunt alongside it and get proper data rather than relying on whatever the proprietary app decides to tell me.

That said, plenty of folk on here have had solid runs with the Eco-Worthy batteries, particularly in lower-demand setups. 560Ah should give you decent headroom if you're not hammering it daily.

Would be really useful if you could share some actual discharge curves or screenshots from the app — the community data on these Chinese-branded units is still pretty thin compared to the big names. Five months is a meaningful checkpoint and your real-world numbers would genuinely help people making purchasing decisions right now.

Good shout on doing your research before buying @PanelDan — be interested to hear how your garden office build ended up.

One thing worth flagging for anyone else reading this thread: with these budget LiFePO4 units, the Bluetooth monitoring can be a bit hit-and-miss in terms of accuracy compared to what the cells are actually doing internally. Worth cross-referencing with a decent inline battery monitor like a Victron BMV-712 or similar rather than relying solely on the app.

Also curious whether yours are wired in series or parallel? I've seen a few folks have balancing headaches when paralleling these particular Eco-Worthy batteries without a proper active balancer in the mix. Not a dealbreaker, just something to keep an eye on at the 6-12 month mark.

@PanelDan garden office storage is where dreams go to become very expensive hobby projects — ask me how I know 🔧

Hah @SaltyMechanic that's painfully relatable — my own shed project somehow ended up with more invested in the electrical side than the actual structure itself 😅

@PanelDan curious what put you off the Eco-Worthy units in the end? I've been watching these cells for a while and the Bluetooth monitoring is genuinely useful for keeping tabs on things remotely, but I've heard the BMS can be a bit conservative on discharge limits out of the box. Worth checking whether yours are Grade A cells too — QC seems to vary batch to batch with these budget brands. Would love to know your current setup if you went a different direction.

@PanelDan curious what you landed on instead of the Eco-Worthy units? I'm in a similar position right now — trying to decide between a pair of those or going with Fogstar Drift 200Ah cells for my motorhome build.

Main thing putting me off the Eco-Worthy is the BMS specs feel a bit vague — continuous discharge rating seems optimistic for the price point. Anyone actually stress-tested one properly rather than just cycle counting?

@VoltDoug the "shed creep" is real — what started as a simple 100Ah setup in my van has somehow evolved into me researching Victron Lynx distributors at midnight...