I don't use my cameras as often since 2020 and lockdowns... and sometime when I pull them out of the bag, I get surprises... (like "Please set the date"...)

Yesterday both of these happened:

  • Panasonic GH5s rejected the battery that came with it (brand new camera some years ago). The camera stays on for a short time then shows message "This battery cannot be used.", then shuts down. I had to use an older battery that came with an older Panasonic GH4 (but the has shorter autonomy I think).

  • Canon 5D Mark IV was on and suddenly showed messages like "Battery communication error", "This battery may be counterfeit.", "OK", shut down. I use the same set of 3 batteries since years (2016 I think). One of them came with the 5D Mark IV and the other two were purchased separately as genuine Canon batteries and never caused any trouble.

Question: Should I purchase new batteries for each camera? (As I still plan to use them.) Or should I look at something else? (I think that their autonomy cycles have shortened of time so that was something I was thinking to day anyway.)

Canon-sub question: It has also become difficult to find genuine Canon LP-E6N batteries for Canon, not sure if they are discontinued or if they are simply lost in the flow of alternative brands. What would be a good way to find them in Europe? I guess I could go to a local photography shop but I expect the price will be high. I see that LP-E6NH avec backwards compatible, thought, also more expensive. Any advice?

Edit: All batteries were re-charged a few days ago. But for some batteries, I was surprised that the charging cycles seems to be extremely short; wonder what happened.

Edit: The Canon batteries have potentially been untouched for 1 or 2 years during the lockdowns but re-used a few times per months since September 2021 ... maybe they have been left alone between August 2022 and December 2022.

Regarding the Panasonic ones, I'm not 100% sure but I think that they have been untouched between mid-2019 and early 2022. And then untouched again until December 2022.

  • 1
    \$\begingroup\$ Thank you. I added some precision regarding the batteries "untouch times" in an edit in the question. Regarding their purchase date, I really can't remember more precisely, I only remember that I got the 5D Mark IV shortly after it was released. \$\endgroup\$
    – TTT
    Dec 4, 2022 at 18:47

1 Answer 1


Your batteries may have self-discharged beyond recovery... or not.

Leave them in the charger for a night. If that doesn't work, they are dead, replace them. If that works, they are not dead, but potentially a bit damaged, so replace them (batteries are consumables)

I use off-brand batteries for my Canon cameras. If you don't pick the less-expensive ones, they are as good as the Canon ones.

  • \$\begingroup\$ Thank you. I forgot it so I just added this to the question: "All batteries were re-charged a few days ago. But for some betteries, I was surprised that the charging cycles seems to be extremely short, wondered what happened." \$\endgroup\$
    – TTT
    Dec 4, 2022 at 18:48
  • \$\begingroup\$ So, first option, they are dead. Personally, I recovered a battery for a 450D camera I don't use much after two years of self-discharge, but it obviously isn't back to the initial capacity. Other batteries (4 years) where definitely dead. \$\endgroup\$
    – xenoid
    Dec 4, 2022 at 19:46

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.