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robl
@robl
Member
Reputable Member
2289 kWhs
Joined: Mar 23, 2022
Last seen: Apr 7, 2024
Topics: 1 / Replies: 178
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RE: New Fogstar 15.5kWh upright solution

@ggw I left ours in AGM volts mode for maybe 2 months, the adaption was automatic but slow. I did try and hurry it along by manually tweaking the A...

2 weeks ago
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RE: New Fogstar 15.5kWh upright solution

We have 304Ah batts too, but after letting the sunsynk auto detect to the size, it thinks they are vastly different to this. Our system now works ver...

2 weeks ago
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RE: New Fogstar 15.5kWh upright solution

When we first installed our Sunsynk I initially tried to use Li-bms as the battery state - this was dreadful, resulting in all sorts of weird behaviou...

2 weeks ago
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RE: New Fogstar 15.5kWh upright solution

@ggw I had a lot of trouble with the sunsynk originally(ok, I still do…). New LiFePo4 battery, with the Seplos bms that talked with it, and yet I fou...

3 weeks ago
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RE: New Fogstar 15.5kWh upright solution

@ggw While I’ve set it to work down to 1%, it’s an extremely rare occurance. Most of the time it cycles 90% to 50%. While I appreciate the degradati...

4 weeks ago
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RE: New Fogstar 15.5kWh upright solution

Screenshots from our Sunsynk. We have an old independent 4kWp FIT install, and our elec is Octopus Go. The sunsynk charges from night elec and PV, r...

4 weeks ago
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RE: New Fogstar 15.5kWh upright solution

@misterb I'd originally intended to top balance in parallel. When I thought it through, it just seemed a lot of faff - how to compress the cells? ...

4 weeks ago
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RE: New Fogstar 15.5kWh upright solution

@misterb Yes. In the case, compressed, with a capacitive active balancer. I think balancing should not be done uncompressed.

4 weeks ago
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RE: New Fogstar 15.5kWh upright solution

We charged our 15.5kWh 280L system to 56V in AGM V mode (3.5V per cell) over the coldest months with Octopus Go, which is 100% or near enough. That w...

4 weeks ago
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RE: New Fogstar 15.5kWh upright solution

@ggw I think the cable to the unit needs to be double insulated if you can touch it. Ideally the twisted pair from the CT should be away from any ma...

4 weeks ago
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RE: Is your heat pump insured?

Personally I think it's only worth insuring stuff when your life would be really difficult without it. Home against fire, car, medical if you're on h...

1 month ago
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RE: New Fogstar 15.5kWh upright solution

I used 50mm2 cable, sunsynk 3.6kW to 100A givenergy breaker to 280L fogstar. 50 is the largest that fits all the above.

2 months ago
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