4 ms·
There is one very good reason: the discharge curve. An alcaline battery loses voltage when it discharges, the lithium ones discharge with the max voltage until
by pimeys 9mo ago
There is one very good reason: the discharge curve. An alcaline battery loses voltage when it discharges, the lithium ones discharge with the max voltage until they suddenly stop working.
This is a reason insulin pumps require specifically high quality alkaline and lithium is considered a risk.
- jdietrich 9mo agoLithium primary cells have a shallower discharge curve than alkaline, but not completely flat; measuring state-of-charge is essentially trivial for any competent design engineer. Medtronic specifically recommend FR6 lithium cells in their insulin pumps. https://data.energizer.com/pdfs/l91.pdf https://data.energizer.com/pdfs/l91.pdf https://www.medtronicdiabetes.com/sites/default/files/library/download-library/user-guides/MiniMed-780G-system-user-guide.pdf https://www.medtronicdiabetes.com/sites/default/files/librar...
- pimeys 9mo agoWhile the Medtronic pump has a setting to toggle between "Alkaline" and "Lithium" to adjust how it reads the battery percentage, the Dana i is primarily calibrated for Alkaline (LR03). So your mileage may vary...