doubleohwhatever
New Member
- Joined
- Dec 14, 2020
- Messages
- 55
Hi All,
I'm looking at putting together what will basically be a battery backup for a few circuits in the house. The grid is fairly reliable where we're at but we're at the base of a mountain and a few times a year high winds trying to get over the mountain take out lines in the area. Electricity has always been restored within 24 hours so that's our goal for the backup. 24 hour backup for the fridge, lights in a few rooms (with two 50w ceiling fans), 250w blower fan for gas furnace and the outlet the garage door opener is plugged into.
The system described here is almost exactly what we'd like to do:
The difference being we want to use the following hardware:
Inverter: Victron MULTIPLUS-II 48/3000/35-32 230V GX
Autotransformer: Victron Autotransformer 120/240vac-100a
Batteries: 16 3.2v 280ah LifePo4 batteries from Shenzhen Luyuan
I think I have most of this figured out but I have a few questions I'm hoping someone can answer:
1) Is the BMS offered by Shenzhen Luyuan any good? If not, is there a recommended BMS that can handle 16 batteries?
2) We're in the US and I *think* I can feed the MULTIPLUS-II 48/3000/35-32 from our split phase system via a hot from each phase. Is this correct?
3) The 100a victron autotransformer is only a little more $ than the 32a autotransformer. Would there be any benefit at all in going with the larger unit?
4) Is compression needed for these batteries?
5) What sort of enclosures are available for these batteries?
I've installed several solaredge systems with and without storage in the past. So my questions above are mainly on the items I'm unfamiliar with which are Lifepo4 batteries and the victron hardware.
Any feedback and help is welcome! Thank you!
I'm looking at putting together what will basically be a battery backup for a few circuits in the house. The grid is fairly reliable where we're at but we're at the base of a mountain and a few times a year high winds trying to get over the mountain take out lines in the area. Electricity has always been restored within 24 hours so that's our goal for the backup. 24 hour backup for the fridge, lights in a few rooms (with two 50w ceiling fans), 250w blower fan for gas furnace and the outlet the garage door opener is plugged into.
The system described here is almost exactly what we'd like to do:
Using a Quattro 48/10000 230V with Autotransformer in US residential 240V split phase - Victron Community
community.victronenergy.com
The difference being we want to use the following hardware:
Inverter: Victron MULTIPLUS-II 48/3000/35-32 230V GX
Autotransformer: Victron Autotransformer 120/240vac-100a
Batteries: 16 3.2v 280ah LifePo4 batteries from Shenzhen Luyuan
I think I have most of this figured out but I have a few questions I'm hoping someone can answer:
1) Is the BMS offered by Shenzhen Luyuan any good? If not, is there a recommended BMS that can handle 16 batteries?
2) We're in the US and I *think* I can feed the MULTIPLUS-II 48/3000/35-32 from our split phase system via a hot from each phase. Is this correct?
3) The 100a victron autotransformer is only a little more $ than the 32a autotransformer. Would there be any benefit at all in going with the larger unit?
4) Is compression needed for these batteries?
5) What sort of enclosures are available for these batteries?
I've installed several solaredge systems with and without storage in the past. So my questions above are mainly on the items I'm unfamiliar with which are Lifepo4 batteries and the victron hardware.
Any feedback and help is welcome! Thank you!