HUMSiENK 100Ah Wall-Mounted LiFePO4 Battery with 100A BMS | V2 $599 price

Been watching this one with some curiosity since the V1 landed. The wall-mount form factor is genuinely clever for tight installs — I've got a Fogstar Drift wedged into an awkward corner in my narrowboat and a proper flush-mount unit would've saved me a fair bit of grief.

That said, $599 at current exchange rates puts it uncomfortably close to Fogstar Drift 100Ah territory, and Fogstar have a proper UK warranty chain and local support when things go sideways. With a no-name Chinese brand, you're essentially hoping the BMS does what it says on the tin — 100A continuous discharge is a bold claim and I'd want to see proper thermal testing before trusting it for serious emergency backup loads.

A few things I'd want to know before parting with cash:

• Actual cell manufacturer? EVE, CATL, or mystery grade B cells?
• BMS balancing current — passive balancing at what amperage?
• Cycle rating under real-world conditions, not lab temps
• UK CE/UKCA marking — increasingly relevant for insurance purposes if you're on a boat or in a dwelling

The V2 label is doing a lot of heavy lifting here without much clarity on what actually changed from V1. That's a yellow flag for me.

Anyone already running one of these? Particularly interested in how the BMS handles sustained high draws — that's where cheaper units tend to throttle back quietly without telling you.

Interesting form factor for sure. Wall-mounting makes a lot of sense on a boat or tiny house where floor space is basically currency — I've been eyeing something similar for my cabin build where a floor-standing unit just isn't workable.

That said, $599 is doing a lot of heavy lifting for an unknown brand. What's the BMS comms situation — Bluetooth, RS485, anything? No monitoring integration is a dealbreaker for me personally. Victron kit talks to everything, which is why I keep gravitating back to it despite the premium.

Also worth checking the mounting hardware closely. Wall-mounted batteries carrying that kind of weight need proper backing — a 100Ah LiFePO4 isn't light, and I'd want to see independent stress testing before I trusted proprietary brackets long-term.

Any cycle data or teardowns surfaced yet, @TorJake?

Wall-mount is clever until you're dangling off a stepladder in a cramped comms cupboard trying to torque the terminal bolts 😅

That said, the V2 BMS bump to 100A is genuinely useful if you're doing any EV top-up duty — the V1 was a bit asthmatic there.

£470

@CotswoldNomad that terminal access point is real — spent a miserable afternoon in my van's overhead locker last spring trying to get a torque wrench onto my Victron SmartShunt with my nose basically touching the ceiling.

That said, the wall-mount position actually solves one of my ongoing headaches: LiFePO4 cells generating heat during bulk charge in an enclosed floor cabinet. Vertical mounting with decent airflow around it seems genuinely sensible.

What I'd want to know before committing £470-odd is how the V2 BMS handles low-temperature cutoff. UK winters being what they are, anything parked up in January needs solid protection against charging below 5°C. Did the V1 have configurable temp thresholds or was it fixed firmware?

@CotswoldNomad my Victron setup lives behind a panel I installed at "I'll definitely be able to reach that" height and yet somehow requires the flexibility of a Romanian gymnast every single time.

@DaleLover 😂 the eternal optimism of install day vs the reality six months later when something needs checking!

Wall-mount does solve a real problem though — I had a similar form factor battery loose in my van floor build and the space saving was genuinely worth it. The key is planning terminal access before you box everything in. Measure twice, regret once and all that.

At $599 for 100Ah with a decent BMS that's competitive territory, though I'd want to know how it stacks up against a Fogstar Drift on cycle claims and low-temp performance before committing. Anyone seen independent data on the V2 BMS specifically? The V1 had mixed reports from what I recall.