I’ve been using two sets of power tap P1S for nearly ten years now.
However I’ve used Duracell batteries, not the fancy expensive ones you’re supposed to use.
I put in a new model, Duracell “optimum” last week, did a 2.5hr ride. The power meter was dead at 57km today. Checked the pressure of the battery which if too tight cuts it our,t at the cafe but still dead.
Changed the battery at home for a fresh “optimum”. It searches and detect, and calibrates, but it’s not quite right. Usually I can go into. “About” on my forerunner to see it say battery health is good, but there’s no option for that.
when you say fancy ones do you mean the double sized ones? I read once to put some grease or something between the cells if you use 2x std ones to prevent arcing.
I have Powertap P1 and just use normal or ultra Duracell, mine are 10 or 11 years old also, don’t seem to have a problem, still get the ~75hrs from them. never tried those new fancy batteries. I did have a problem when I had no spares and my Mrs had bought some pound shop specials, and they were actually a mm shorter or something silly so didn’t contact
Yes, your HIM was often strong iirc; shame it didn’t quite convert to IM as you’d have been well under 10 in theory. But we all know about the best laid plans; I had a few fall by the wayside.
Every time I think Dustin Klein on ‘Everything’s Been Done’ has convinced me SRAM AXS is the way to go, I hear dramas related to batteries on shifters. Someone was moaning on a gravel ultra video last night their SRAM was killing the battery life, and they’d have to limp home on a single gear.
I dunno - null hypothesis, right? Try the battery they recommend. If it still is broke…then its broke. Mine are about a decade old now (P1S pedals) and tempermental (sic)