Batteries and Solar: Difference between revisions
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Estimates of what it would take to achieve a year-round solar autonomy, for different continuous loads. The model a that assumes "typical" SF weather conditions. [https://docs.google.com/spreadsheets/d/1tJ-tQex7pu4SUx5vmLtDblHJkNIo922s6NCYq-UrDx8/edit?usp=sharing Link to model] |
Estimates of what it would take to achieve a year-round solar autonomy, for different continuous loads. The model a that assumes "typical" SF weather conditions. [https://docs.google.com/spreadsheets/d/1tJ-tQex7pu4SUx5vmLtDblHJkNIo922s6NCYq-UrDx8/edit?usp=sharing Link to model] |
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NOTE: A good portion of the capacity is just to meet the worst few days of the year, so if you are willing to sacrifice those, the system can be quite a bit smaller and still get you 95%+ annual up time. |
NOTE: A good portion of the capacity is just to meet the worst few days of the year, so if you are willing to sacrifice those, the system can be quite a bit smaller and still get you 95%+ annual up time. |
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Revision as of 12:49, 19 September 2022
Batteries
Off The Shelf
- Portable Mini UPS Battery Backup and PoE - an easy to carry PoE and battery combo for testing nodes in the field
Just Batteries
- Bioenno Power - LiFePO4 batteries which are lightweight but support many more charging cycles compared to normal lithium batteries.
Solar
Off The Shelf
- Jackery offer a range of all-in-one portable battery and charging packs. Can be used with optional solar panels.
- Ubiquiti provide solar charges specifically designed for use with their PoE Wifi products. Batteries and solar are bought separately.
Uninterrupted Self Sustaining Solar Power
Solar Load Estimates
Estimates of what it would take to achieve a year-round solar autonomy, for different continuous loads. The model a that assumes "typical" SF weather conditions. Link to model
NOTE: A good portion of the capacity is just to meet the worst few days of the year, so if you are willing to sacrifice those, the system can be quite a bit smaller and still get you 95%+ annual up time.
Below all assume 26V LiFePO4 battery (using 80% of capacity), somewhat conservative, but not a lot of margin
7W (cont.): 18A-h battery, 90W solar, 5A charge controller
10W (cont.): 25A-h battery, 125W solar, 5A charge controller
15W (cont.): 38A-h battery, 190W solar, 10A charge controller
20W (cont.): 50A-h battery, 250W solar, 10A charge controller
40W (cont.): 100A-h battery, 500W solar, 20A charge controller
50W (cont.): 125A-h battery, 625W solar, 25A charge controller
60W (cont.): 150A-h battery, 750W solar, 30A charge controller