I'm going to guess it was a GenII-- I can't recall, as I sold it almost 2 years ago. Stages guesstimates ~200 hour battery life for a single-sided meter, but I never got anywhere near that. If I could get a battery to last a full month (50-60 hours,) that was something. I had cells die in just 10-12 rides. I think I had the Stages about a year, and went through probably a dozen batteries. By contrast, I put a new 2450 in one of my Power2Max meters on August 31st of last year-- and that replaced the battery that came with the meter in the late-fall of 2017.
I'm not bad-mouthing Stages-- plenty of people have very good luck with them, and they're probably the most popular PM out there-- but my experience was not great (sporadic calibration issues to go along with the unpredictable battery drain,) and I couldn't pass up the deals P2M was throwing down when I bought my pair of Type S meters.
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