I found some Panasonic batteries at a great price but the expiration date is Feb 2016. Since they lose power over time would these be worth buying now?
I have about 10 Panasonics from around the same age (bought in 2005, no exp date), maybe older. I used a couple in the last couple of weeks and they still work great. The ones I have are made in Japan, not US.
They should be fine but look for a deal on them or just buy fresh batteries.