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Illustrious Member
Joined: Jan 20, 2022
Last seen: Nov 6, 2025
Profile Activity
Topics: 16 / Replies: 2679
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RE: 1.000.000 watt hours in a box from Sunsynk ...

These look to me like they are 5kWh rack-mount boxes.So they'll probably have 100Ah cells inside. I wonder why they've decided to start from a relat...

2 years ago
Forum
Energy Storage
Reply
RE: New member - advice sought

Hi @jvs197 and welcome! My first observation is that your 8.5kW ASHP is already oversized for your sumptuously-insulated house.So your system design...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Removing a Meter

Your meter falls within the responsibility of your Energy Supplier, whereas the 100A Service Fuse belongs to your DNO.So you'll need to seek advice on...

2 years ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: Say hello and introduce yourself

Not a photo which screams out "well insulated pipework" @gc61 🤔 Equally, whilst Viessmann could use your third photo for advertising purposes, on...

2 years ago
Forum
Introductions, Forum Rules & Updates
Reply
RE: My experience with the Selpos Mason DIY kit

Yes. That's where we're in agreement. Simply having the units talking to each other isn't reassuring me that they'll arrive a sensible answers - esp...

2 years ago
Forum
Energy Storage
Reply
RE: How to quickly top balance EVE 280 cells?

I don't think you need be concerned about that point. The reason we top balance is to create an even charge in each cell. It means that the balancin...

2 years ago
Forum
Energy Storage
Reply
RE: Say hello and introduce yourself

That's the response I expected from a Viessmann customer.They've established a niche market at the high quality end of the spectrum. I doubt that Vi...

2 years ago
Forum
Introductions, Forum Rules & Updates
Reply
RE: My experience with the Selpos Mason DIY kit

Well @chickenbig - it seems that you're experiencing similar issues with BMS units in parallel, to those I've found with Growatt inverters in parallel...

2 years ago
Forum
Energy Storage
Reply
RE: Say hello and introduce yourself

@gc61 - Does the installation of a high quality (expensive) Viessmann HP mean that you get an equally high quality installation from a Viessmann-train...

2 years ago
Forum
Introductions, Forum Rules & Updates
Reply
RE: My experience with the Selpos Mason DIY kit

Aagh! The first time I read this, I assumed you were talking about export to the grid! The term "export limit(ation)" needs to be reserved by us h...

2 years ago
Forum
Energy Storage
Reply
RE: A beginner's journey into DIY home energy storage - no solar!

That's a shame. I don't which DNO you have, but it should be the case that their RIIO-ED2 'agreement' with Ofgem requires them to become DSO in natu...

2 years ago
Forum
Energy Storage
Reply
RE: My experience with the Selpos Mason DIY kit

Neither of those options sounds satisfactory to me. Experience over the past year with trialing seven different BMS units has left me to conclude th...

2 years ago
Forum
Energy Storage
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