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Steevjo
@steevjo
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Trusted Member
Joined: Apr 8, 2023
Last seen: May 6, 2023
Profile Activity
Topics: 0 / Replies: 42
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RE: Battery Charging Anomalies

@allyfish thanks for that. ”This is well known for both Li-Ion and Ni-Cad batteries.” Wish it was. Nothing about charge rate vs temperature in any...

2 years ago
Forum
Solar Photovoltaic (PV)
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RE: Limiting Battery Fill with a Powerwall 2

@iancalderbank It's an interesting problem and far from straightforward. The risk reward balance is massively skewed towards not undercharging as that...

2 years ago
Forum
Energy Storage
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RE: Limiting Battery Fill with a Powerwall 2

@iancalderbank Time-based improved in a software update last year - the one where you could enter the unit costs for the different time periods. Bef...

2 years ago
Forum
Energy Storage
Reply
RE: Battery Charging Anomalies

sorry for any confusion - it was the only reference I could find to charging and temperature! I don’t think you are alone @dunlorn there are two peo...

2 years ago
Forum
Solar Photovoltaic (PV)
Reply
RE: Battery Charging Anomalies

@dunlorn sorry really don’t know, temperature was just speculation on my part. The way I think it works is that the battery sends info to the invert...

2 years ago
Forum
Solar Photovoltaic (PV)
Reply
RE: Turning your heat pump off

Yes our Mitsubishi let’s us control the heating and hot water separately. That said we probably won’t turn the heating off - it is controlled by a w...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Rate the quality of your heat pump design and installation

@davesoa don’t blame you. we don’t have gas and were about to need a new boiler and a new oil tank so went the ASHP route. it’s a massive fail by ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Rate the quality of your heat pump design and installation

@dandee 😀 Installation was ok. It was the commissioning that was terrible!

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Battery Charging Anomalies

Batteries controllers may limit their charging current when they are cold - this could be a factor depending on where your batteries are located. A ...

2 years ago
Forum
Solar Photovoltaic (PV)
Reply
RE: Limiting Battery Fill with a Powerwall 2

A bit more... Last summer we ran in self powered mode - once the heat pump isn't heating the battery is plenty big enough to keep us going from day ...

2 years ago
Forum
Energy Storage
Reply
RE: Limiting Battery Fill with a Powerwall 2

The Powerwall has two modes - Time based control and self powered. Self powered mode will only charge from the sun - in summer that may be the righ...

2 years ago
Forum
Energy Storage
Reply
RE: Rate the quality of your heat pump design and installation

Our Heat Pump installation went smoothly - 14kW Zubadan ASHP, conversion of HW system to mains pressure, new 250L tank, 18 radiators replaced - took l...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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