I recently bought a used digital camera, complete with 6 lithium-ion batteries.
The batteries all have different date codes on them, but some of the older batteries seem to last longer than the newer batteries.
I want to determine the relative power capacity of each battery, to learn which ones will take the most photographs.
The simplest, but most time-consuming, way to accomplish this is to:
- Charge a battery
- Take pictures until the battery depletes
- Count the number of pictures
- Repeat for the next battery
This likely will take many hours to complete.
Is there a faster, reasonably accurate way to determine the relative power capacity of each battery (I hope I'm using the correct term)?
I do have a simple digital multimeter at my disposal.
And for reference, here is an image of a compatible battery showing the electrical contacts: