Jersey guy Loc: New Joisey

Years ago when I was dealing with scientific equipment the prevailing thought was to let batteries fully discharge before recharging otherwise they developed a "memory" and would never take a full charge again. (These were of course, Ni-Cd). Some, even at that time, disputed that claim so I don't know if it was ever valid. I recently purchased two batteries for an old laptop (in succession) and they came with instructions to deliberately discharge the batteries to near zero before rechargng in order to prolong their lives and maintain full charges. Cheap imports failed long before I had a chance to confirm the instructions.

I also seem to recall a caveat not to do that in the old days as you risked sending the batteries into "negative charge"....whatever that was.

Haydon

Your welcome to make comment but I was referring, in a dumbed down fashion, stage II in battery recharging called the "absorption stage". Please provide proof of your statement to have it hold weight to rebuttal.

Here's mine.

https://www.batterystuff.com/blog/3-stages-of-smart-chargers.html



Yes the new ones seem to have a slightly higher rating. I think Panasonic has continued development because earlier versions from Sanyo seem to be slightly lower in rating.

I've finally began throwing out eneloops after buying them back in 2007. They charge fine but when put into a heavy load situation, they begin dying quickly. Regardless, I use them for flash, audio recorders, remotes, wireless mice and keyboards. I haven't bought an alkaline battery in 10 years and never could go back.

jonfrei

This shows that you haven't tried Eneloops -- they hold their charge for (literally) years.

Bill P

Costco has two packages, one with charger and a fist full of AA and some AAA's too, and another with more batteries without the charger.

Jimmy T Loc: Virginia

I have the white Eneloops and they do GREAT in my Canon 600RT flash. And, nope, I have never tried the black eneloop batts.