I share a cabin in a cold climate with my siblings and now it is time to upgrade the batteries as we have had 2 low voltage disconnects. The last one after charging with a generator. I then did a load test with all consumers, and it triggered disconnect after 3.5 hours and 260Whrs.
An energy audit results in 900 Whrs a day in worst case, but more likely closer to 600 Whrs. Mostly lights, the big consumers are TV, WIfi and PC a couple of hours each day.
How do I upgrade this system in steps starting with the batteries?
The decision i struggle the most with is AGM or LifePo4? I have been reading a lot about LifePo4 and the more I read, the more sceptical I become.
It has to be low maintenance. I have to do all the maintenance and there is a 3 hour drive.
It has to be easy to operate for my siblings.
I would like to be able to extend the capacity if necessary.
This is the third iteration of the system and it is now 7 years old:
Thanks!
An energy audit results in 900 Whrs a day in worst case, but more likely closer to 600 Whrs. Mostly lights, the big consumers are TV, WIfi and PC a couple of hours each day.
How do I upgrade this system in steps starting with the batteries?
The decision i struggle the most with is AGM or LifePo4? I have been reading a lot about LifePo4 and the more I read, the more sceptical I become.
It has to be low maintenance. I have to do all the maintenance and there is a 3 hour drive.
It has to be easy to operate for my siblings.
I would like to be able to extend the capacity if necessary.
This is the third iteration of the system and it is now 7 years old:
Solar panels | 2x140W | Should have been 611W according to energy audit |
Solar regulator | EP Solar Tracer MPPT 2215BN 20A (12/24V, 260/520W) | |
Charger | 60A, Automatic 1260 | |
Inverter | Inverter 400W, EP Solar NP400-12 | Only used to charge PC |
Batteries | 2 x AGM Solar 290 100 hour in parallell | The batteries are stored in the cellar, usually 2 degrees Celcius in winter. |
Thanks!
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