For example charging at 100A will take 9.5 – 10 hours to charge a 45kWh 48v LFP battery. The Sunsynk 8.8 hybrid, has a max charge/discharge of 190A but, you would typically set the inverter to use max grid power.
The C value refers to the max charge/discharge rate, so you are correct with Fogstar having a C rate of 2.
Dyness don’t specifically state whether it comes with a heater or not. My advice would be to contact or a supplier for an accurate answer.
Dyness own spec’s state the DL5 has a 95 DOD and a recommended charge/discharge of 50A and a maximum of 75/100A.
https://dyness.com/dl5-0c-low-voltage-storage-batteries-household-use
It is not easy comparing batteries on a like for like basis, as some suppliers provide more informatio than others, such as the grade of battery cells used and traceability back to the cell/battery manufacturer. Another importantant factor is dedicated help from the supplier and good support on UK based forums in plain english. This where Fogstar shines.
This is nothing you can’t sort yourself – you agreed with the installer, you want 45kWh of Fogstar batteries at the beginning and should be detailed in the quote prior to work commencing. It is not your fault the installer didn’t pay a deposit to order the batteries specced or is it you fault the installer fell out with the supplier. The installer should therefore find away around the problem they created, one way would be to order from one of Fogstar suppliers. Likewise the installer through is own fault should not be expecting you to cough up extra money on a problem he created not you and want to install a battery/s thats not that popular in the UK comared to others.
The MCC is one of these government backed bodies that doesn’t have a great deal of authority but, I see no harm in contacting their helpdesk. I would also contact Home energy Scotland. Citizens Advice would also be a good choice to contact, as it’s likely to fall under the sale of goods/sevice act and will point you in the right direction if they can’t help. Another option would be a small claims court (£10000) or no win solicitor.
As before, communication via email/letter so you have papertrail 🙂