meetyg
Solar Addict
- Joined
- Jun 4, 2021
- Messages
- 1,166
I'm thinking of changing my current DIY solar system, currently grid-tied with about 1kw of peak solar (4-5kwh a day during summer). I want to have some sort of battery backup for critical loads.
I thought of getting an all-in-one inverter/charger.
I have seen that the higher output ones (more than 3 kw) use 48v, but am reluctant because of the higher voltage. This installation will be in the house, as I don't have much choice (outside temps are too hot to store the battery outside the house).
So I have seen some nice 24v, 3kw inverters online and was wondering if I will regret going 24v. I am also going for low-voltage PV input (30-145v MPPT input).
So in short, how much safer is 24v as opposed to 48v Lifepo4?
Pros of going 24v in my case:
- Safer ?
- Sourcing Lifepo4 cells is difficult here in the Middle East, so going 8S makes things simpler and cheaper. I have 8 100ah cells on order, the price with shipping was already a large stretch for my budget.
Cons:
- Need larger wires
- Limits the installation to around 3kw
- Limits future expansion
Thanks.
I thought of getting an all-in-one inverter/charger.
I have seen that the higher output ones (more than 3 kw) use 48v, but am reluctant because of the higher voltage. This installation will be in the house, as I don't have much choice (outside temps are too hot to store the battery outside the house).
So I have seen some nice 24v, 3kw inverters online and was wondering if I will regret going 24v. I am also going for low-voltage PV input (30-145v MPPT input).
So in short, how much safer is 24v as opposed to 48v Lifepo4?
Pros of going 24v in my case:
- Safer ?
- Sourcing Lifepo4 cells is difficult here in the Middle East, so going 8S makes things simpler and cheaper. I have 8 100ah cells on order, the price with shipping was already a large stretch for my budget.
Cons:
- Need larger wires
- Limits the installation to around 3kw
- Limits future expansion
Thanks.
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