SkedAddled wrote in post #18992712
So far, the Wasabi packs have been exemplary, though I admit to
not having given them much of a workout.
My extensive and heavy use of Wasabi, in both LP-E6 and LP-E10, have proved them to be 100% rock solid reliable.
When buying new, I try to always buy Wasabi; we currently have eight LP-E6 Wasabi.
My 7DMkII absolutely eats batteries, several a day; the 7D, on the other hand, can go for two or three days before a battery change; this is with no grip on either camera; I have lately added grips to both; but, with the pandemic, I have not had opportunity to get much experience with them.
My gut experiences are that the Wasabi outlast the original Canons in either camera.
I bought both cameras from the same person and he provided me with a sack full of a duke's mixture of batteries, including the two Canon originals, Kastar, Power2000, Promaster, ReFuel, and STK SterlingTEK; all of these aftermarket batteries perform as well as the originals.
My only bad experiences with aftermarket batteries have been with LP-E10 that do not have any name-brand label on them.
I got two LP-E10 that were in boxes labeled Big Mike's, but the batteries themselves had no brand label at all; just the size and voltage information; these batteries worked okay for a couple months and then started losing power quickly and eventually swelled up so much that they had to be pried out of the camera.
I had a likewise experience with another pair of no-name LP-E10 batteries that came from another source.
I have not had a single problem with aftermarket batteries that have a brand label on the battery itself.
I have Halcyon and PowerExtra LP-E10 that have been going strong for several years.
Sure death for Lithium-Ion camera batteries is long-term storage when not fully charged; when the voltage drops below a certain level, it turns off the ability of the battery ever being charged again.
Batteries should be fully charged before storing and regularly topped off, at least once per year.