genji wrote:
I’m using a Kanto MR-9 adapter, which I think is the same kind that Desmolicious recommends. It converts the 1.55V voltage of a SR43 silver oxide battery to the 1.35V of the original PX625 mercury battery that the Pen F cameras used. I tried a Wein battery in my LeicaMeter MR but it discharged quickly and they’re very expensive to buy in Australia. Even though the MR-9 adapters aren’t cheap, over time one recoups the cost by using less expensive SR43 batteries.
I plan to use an adapter as well for all the same reasons, but they are weeks away and the Wein was on the shelf 10 minutes away. The reason I asked is because if your Pen is doing the same thing as mine, but with the adapted battery, there's not much point in waiting for the adapter to troubleshoot my Pen further.