Joining the Renewable Heating Hub forums is completely free and only takes a minute. By registering you’ll be able to ask questions, join discussions, follow topics you’re interested in, bookmark useful threads and receive notifications when someone replies. Non-registered members also do not have access to our AI features. When choosing your username, please note that it cannot be changed later, so we recommend avoiding brand or product names. Before registering, please take a moment to read the Forum Rules & Terms of Use so we can keep the community helpful, respectful and informative for everyone. Thanks for joining!
Fogstar now stocking Seplos Mason boxes
(No affiliation to Fogstar, just purchase 16 cells last year and had good service).
I noticed Fogstar now stock the Seplos Mason 280Ah DIY box, and at £499 including VAT it's not too far off importing direct from China with DDP. (It's probably cheaper if like me you are VAT registered and buying for a company).
https://www.fogstar.co.uk/collections/lifepo4/products/seplos-mason-48v-280ah-diy-kit-14-3kwh
Also interesting, they will be importing an upright version on wheels which might suit more people. Not sure of the quality, but it doesn't seem massively different to the horizontal version:
https://www.fogstar.co.uk/collections/lifepo4/products/seplos-tall-48v-280ah-diy-kit-14-3kwh
Little bit annoying as I've just bought 6 boxes from Seplos China, probably would have just got them from Fogstar. I've bought the 12kW Three Phase Sunsynk beast which I'll install over the next few month, haven't bought the cells yet though and need to figure a plan to top balance 96 of them!
Had my eye on the upright version with wheels. Pity it doesn't have two of each terminal for a neat expansion if you decide to get another. Good price though and saves faffing around.
(Not affiliated with Fogstar, just used them recently to buy Mason cases)
I've just seen that Fogstar are now doing deals on grade (A/B) x (280/304/305)Ah cells which makes them very competitive with using Alibaba. £2,056.87 for a Mason kit and Grade B LF280K cells looks good value for money, with £2,532.86 for Grade A LF304K cells not too much extra for that extra piece of mind.
They are stonking prices really, no need to go to China. I've been buying the Grade B, will be interesting to see how they hold up over the years.
@vaugi Really good prices, especially if you can claim the VAT back. They are down to Grade B cells only at the moment, but I'm guessing another container load will be sent over.
For comparison I checked prices on Alibaba.com. I have been quoted about 4430 USD (3450 GBP) for two Mason 280K boxes and 32 Eve 280K cells. Alternatively, 3 of these Mason boxes and 48 Eve 304Ah cells were just under 7600 USD (5910 GBP). Both quotes are DDP.
I guess it comes down to how much you value a UK partner.
Those are good prices, I'm surprised at those given the weight from China. It's an easy call if, as you mentioned above, you are VAT registered in the UK, might as well go with Fogstar. Individually though, tough call, I'd probably still say best from UK as you've got quicker delivery, and great protection.
Something to watch out for is https://www.gov.uk/government/consultations/vat-energy-saving-materials-relief-improving-energy-efficiency-and-reducing-carbon-emissions/outcome/summary-of-responses#next-steps ; it is planned to add battery-only installations and battery additions to the list of zero-rated VAT Energy Saving Measures on 1 February 2024. I presume that batteries will still be retailed with 20% VAT, much like existing solar panel and inverters, but given a friendly installer or your own company you can claim the VAT back when a battery is added or a non-solar inverter system is installed.
- 26 Forums
- 2,618 Topics
- 61.1 K Posts
- 896 Online
- 6,993 Members
Join Us!
Worth Watching
Latest Posts
-
RE: Indevolt Batteries UK Support & Info Thread
Thanks @editor , @indevolt-uk Subject to any comments ...
By JamesPa , 7 hours ago
-
RE: Share Your Experiences with Heat Pump Manufacturer Support
@seoras Sorry to hear that. I found Vaillant very help...
By JamesPa , 8 hours ago
-
The Watchdog That Watched and Waited
On 9 January 2026, Consumer Energy Solutions collapsed ...
By Mars , 11 hours ago
-
RE: GSHP Kaput After 16 Years: New Compressor or Switch to ASHP? Advice Welcome
Cool Energy in Grimsby sell ground source heat pumps an...
By DerekDeLeon , 12 hours ago
-
RE: Valliant Heat Pump Settings
Thats arguably a sign of a good installer - they unders...
By JamesPa , 13 hours ago
-
RE: Electricity price predictions
Well, we have so many cases where rain water mixes with...
By Batpred , 14 hours ago
-
RE: Two heating zones to one zone
@profzarkov They arent obviously wrong, but the only...
By JamesPa , 16 hours ago
-
RE: Towns water feed to air source heat pump system
The DHW circuit cant be separated (well it could, you c...
By JamesPa , 16 hours ago
-
Solis AC-coupled 3kW storage inverter
Solis AC-coupled 3kW storage inverterPylontech batterie...
By MartinRobinson , 22 hours ago
-
RE: My NIBE ASHP Nightmare: No Commissioning, High Bills and a Hostile Installer
As @transparent has observed above, this is not bad, an...
By cathodeRay , 23 hours ago
-
RE: The Grid Says Yes.. Until It Doesn’t: Why Britain's Net Zero Push is Stalling at the Plug Socket
As I was reading this article Mars, I was thinking that...
By Toodles , 2 days ago
-
RE: Tell us about your Solar (PV) setup
Installed in May 2011: 16*Sharp 245 W monocrystalline p...
By txmartyn , 2 days ago
-
-
RE: Say hello and introduce yourself
That doesn't sound 'right' to me. The national Smart ...
By Transparent , 3 days ago
-
RE: Growatt battery disconnected
I doubt this will happen, but I will try and suggest it...
By Eliuccio , 3 days ago
-
Understood. That's why I decided from the outset on a ...
By JamesPa , 3 days ago
-
RE: My experience with 3 heat pump surveys: Heat Geek, British Gas & Octopus
On the litigation, I would not go there and definitely ...
By Batpred , 3 days ago
-
RE: Recommended home battery inverters + regulatory matters - help requested
I suppose if your pv inverter packs up, you have a plan...
By Batpred , 4 days ago
-
RE: New Vaillant aroTherm Plus in black - When will it come to the UK?
Firstly check you are using sound power not sound press...
By JamesPa , 4 days ago
-
That’s the solar up and running, I don’t think it’s the...
By David999 , 4 days ago
-
RE: Seeking ideas / information / commiseration - Pure Drive
I agree with @colinc that you can reuse some of it. A s...
By Batpred , 4 days ago
-
RE: Solar Power Output – Let’s Compare Generation Figures
@toodles Im trying me best to ignore orangeman, I figur...
By Papahuhu , 5 days ago
-
@toodles That’s way better per kWp performance than our...
By Papahuhu , 6 days ago


