Start with identity
Confirm chemistry, standard designation, nominal voltage, dimensions, polarity and whether the cell is rechargeable.
Read the test conditions
Capacity figures depend on load, cutoff voltage, temperature and schedule. Values from different tests are not directly comparable.
Use curves for the application
Discharge and pulse plots show how voltage behaves over time under conditions closer to the intended device.
Decision boundary
This guide narrows a battery decision but does not override the device manufacturer’s current manual or safety instructions.
Sources
- Energizer — CR1225 engineering datasheet
Representative lithium-coin dimensions, voltage, construction and rating conventions.
- Energizer — AA alkaline engineering datasheet
Representative cylindrical alkaline designation, voltage, dimensions and performance context.
- Energizer — A23 miniature alkaline datasheet
Miniature multi-cell alkaline dimensions, voltage and pulse-use context.