Four batteries from reader "Pell." The Maxell Alkaline Ace is best, although Pell apparently prefers the boring old
Usance. Which just goes to show how, when it comes to batteries, there is no right or wrong answer!

"I have enjoyed very much your frequent features on batteries, and have trawled my flat for rare and exotic batteries to photograph and share with your readership. I have found many treasures, including the sporty "gp 550" in boy-racer orange-and-green, for maximum garishness. This must add to their effectiveness somehow, in a way that my feeble human mind cannot comprehend. The fact they are concealed within my cordless telephone does not diminish their garishness."

"Next are my favourites - 'Usance' ('Innovative Products Ltd. (UK)'), with their sensible warning 'dot not open battery' (sic). Their excellent grasp of spelling bolsters my confidence in the quality of their product. Also, I'm sure there must a possible pun to do with "'usance' sounding kind of like 'nuisance', but I can't do all your work for you, now, can I?"

"The "Maxell Alkaline Ace" batteries. I discovered these in an old Panasonic VCR remote control, and are the sensible, reliable, designated driver of the group - they carry warnings in almost every conceivable language!"

"And finally, that ubiquitous rarity - the "Rocket". this time, heavy duty AAAs, with almost as garish a colour-scheme as the GP 550s, but not quite. They carry the legend '0% Mercury & Cadmium', which is technically incorrect - it should say '0% Mercury & 0% Cadmium', or '0% Mercury OR Cadmium'. As it is written, it seems to suggest that it has no mercury, but plenty of cadmium."
READER EXIF DATA: "These photos were all taken with my flashy new canon Powershot A720 which can do many megapixels and tiny macro - if you look at the photos at 1:1 size, you can see a dot-matrix-type effect at the edges of the fonts on some of the batteries. At first, I thought my camera was taking bad pictures, but then I realised it was exactly the opposite - it's so good that you can see the print pattern on the batteries that is too small to see with the human eye! it's true! look at the outline of the batteries - smooth as can be. Thank you, Pell."