Another update. To make it short, Fuji NP-50 is good, no problem. Sadly D-LI68 that I bought at the same time as NP-50 already bulged. Older D-LI68 are still doing OK.
Here are details. If you remember, I bought one each of Pentax D-LI68 and Fuji NP-50 at the same time from Adorama in July 2018. I also bought a second Q7 kit used from KEH, which came with Pentax D-LI68 in April 2019 (of course I have no idea how this battery was used by the previous owner).
Including Pentax D-LI68 that came with my first Q7, I've been rotating four batteries (one new NP-50, one new D-LI68 and two old D-LI68).
Recently, the new D-LI68 started swelling to the point where, once installed, I have to firmly tap the Q7 body against my palm while the battery door is open just to remove the battery, so I had to stop using that.
NP-50 as well as D-LI68 that came with my second Q7 are going strong, D-LI68 that came with my first Q7 is still OK (no swelling, can take some shots).
BTW I noticed that the price of these batteries are crazy right now. D-LI68 is listed at $58.82 both at Adorama and B&H, NP-50 is only available at B&H at $49.99.
https://www.adorama.com/ipxdli68b.html? FUJIFILM NP-50 Lithium-Ion Battery (3.7v 1000mAh) 16575069 B&H
When I bought them just 20 months ago, they were $39.95 and $29.09 respectively. In the future I might go back to third party batteries like Wasabi.
Originally posted by kwb Quick update.
My DOT-01 batteries died at the age of 25 months. Even though they didn't swell, at some point they took less than 10 shots per charge, so I ordered a Pentax D-LI 68 and a Fuji NP50 from Adorama. When the new ones were delivered, I gave one last chance to DOT-01s and I was able to squeeze four and one shot(s) out of them!
My 44 months old Pentax D-LI68 is also dying but it would still take maybe 30 shots or so.
Next update in a year or two (if I remember
) will be how Fuji NP50 performed.