Jeff From NJ
New Member
- Joined
- Dec 2, 2021
- Messages
- 68
I'm trying to figure out the number of batteries to purchase to make my new system operate. Currently, I have 6 panels running in a 2S3P setup (260W, 30.6V, 8.5A). I currently have two 12V 100MAh LiFePO4 batteries that I will combine to get 24V and was thinking I should grab another two, making 4 batteries at 24V 100MAh.
At 12V, the batteries appear to give 1280Wh each, so I am thinking if I had 4, I would have 1280 x 4 or 5120Wh and based on my power estimate below, I need 4058.6WH to run the house.
I'm not sure if connection the 4 batteries together to get 24V 100MAh will give me the 1280Wh per battery and I am not sure if it does if it is enough to power the house load. I am 90% certain I am messing up the calculations. Could someone step in and tell me how many 12V 100MAh batteries I would need to run the house.
Thanks all!
At 12V, the batteries appear to give 1280Wh each, so I am thinking if I had 4, I would have 1280 x 4 or 5120Wh and based on my power estimate below, I need 4058.6WH to run the house.
I'm not sure if connection the 4 batteries together to get 24V 100MAh will give me the 1280Wh per battery and I am not sure if it does if it is enough to power the house load. I am 90% certain I am messing up the calculations. Could someone step in and tell me how many 12V 100MAh batteries I would need to run the house.
Thanks all!
Battery Sizing | ||
Daily Storage Requirement | 1826 | W-Hrs/Day |
Max discharge from full CHARGE | 90.0% | % |
# days of storage capacity | 2.0 | Days |
System Voltage | 24.0 | Volts |
min Battery capacity W-Hrs | 4058.8 | W-Hrs. |
min Battery capacity A-Hrs | 169.1 | Amp Hours |
Max continuous current to DC Loads | 7.3 | |
Max continuous DC current to Inverter | 84.7 | |
Max continuous current from bat. | 92.0 | Amps |
Max Continuous discharge rate | 0.54 | C |
Solar Aray Sizing | ||
# sunny days to recharge while under load | 3.0 | Days |
Required Total daily Solar output (Sunny) | 3044.1 | W-Hrs. |
Insolation # (Equivelent hours of full sun) | 5.0 | Hours |
Min Solar Cell Wattage | 608.8 | Watts |
Max Charge Current | 25.4 | Amps |
Max Charge rate | 0.15 | C |
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