There was an interesting article in "What Digital Camera?" an UK magazine - Sept/2008 Issue 139 - where they conducted their "WDC Olympics - Batteries and Memory Cards" (pages 52-3 for the battery part).
They compared and tested various AA battery chemistries -
obviously focussing on usage in cameras - but as part of their tests they also used the batteries in flashlights/torches.
I scanned the relevant sections (note: these images belong to "What Digital Camera?") -
Comparison table -
Precedure and battery types -
about rechargeable batteries -
It is interesting what they say about the aged/used NiMH.
They also mentioned in passing voltage sensitivity (the Pentax istD dSLR - was the predecessor to the notorious K100D which is very battery fussy/voltage sensitive - see summary Post #57 in eneloop vs. Kodak Pre-Charged Voltage Maintenance) but did not say that was a contributing factor for the older NiMHs - which definitely would have had lower operating voltage under load than the eneloops.
They compared and tested various AA battery chemistries -
obviously focussing on usage in cameras - but as part of their tests they also used the batteries in flashlights/torches.
I scanned the relevant sections (note: these images belong to "What Digital Camera?") -
Comparison table -
Precedure and battery types -
about rechargeable batteries -
It is interesting what they say about the aged/used NiMH.
They also mentioned in passing voltage sensitivity (the Pentax istD dSLR - was the predecessor to the notorious K100D which is very battery fussy/voltage sensitive - see summary Post #57 in eneloop vs. Kodak Pre-Charged Voltage Maintenance) but did not say that was a contributing factor for the older NiMHs - which definitely would have had lower operating voltage under load than the eneloops.
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