Energizer A544（4LR44、PX28A、V28PX）6V アルカリ電池

Finally found a battery that actually fits my glucose meter perfectly without any jiggling. It’s held a steady reading for over three weeks now with daily use.

Swapped this 6V into my old Canon film camera and the meter jumped right back to life. It's a straight replacement for the PX28A that was in there, fit perfectly with no wiggle. Two rolls in and it's holding steady.

My dog's bark collar kept dying until I switched to these 6V alkaline cells, and now it runs for weeks instead of days. The 4LR44 size is hard to find locally so I'm glad these match the PX28A my device calls for. Solid replacement, no issues at all.