auraslip
10 MW
- Joined
- Mar 5, 2010
- Messages
- 3,535
This is far from complete or even up to date, but I find it immensely useful for specing out potential builds.
Battery pack calculator spreadsheet.
Page one has lifepo4/li-ion cylindrical and pouches.
Page two has lipo packs.
To find prices I add shipping to the price of a full pack and divide by the number of cells. Some of the prices may be out of date, so please edit them if you find a better deal. The same goes for capacity, nominal voltage, and internal resistance! Specific resistance is Ri * capacity so don't bother changing that.
C-rate is not actually the "real" c-rate. It's just used to find I^2R losses. As in C-rate time pack capacity squared times pack internal resistance.
To use this spreadsheet, just find the batteries you want to build a pack from, and enter the #s#p config in the white squares (or just copy and paste it into all the options). Then scroll down and find your pack.
This is quite useful, but unfortunately I don't have the skills to clean up the user interface.
Battery pack calculator spreadsheet.
Page one has lifepo4/li-ion cylindrical and pouches.
Page two has lipo packs.
To find prices I add shipping to the price of a full pack and divide by the number of cells. Some of the prices may be out of date, so please edit them if you find a better deal. The same goes for capacity, nominal voltage, and internal resistance! Specific resistance is Ri * capacity so don't bother changing that.
C-rate is not actually the "real" c-rate. It's just used to find I^2R losses. As in C-rate time pack capacity squared times pack internal resistance.
To use this spreadsheet, just find the batteries you want to build a pack from, and enter the #s#p config in the white squares (or just copy and paste it into all the options). Then scroll down and find your pack.
This is quite useful, but unfortunately I don't have the skills to clean up the user interface.
