| Re: cell failure times I chose that I change them out @ 12 months religiously. OK, it's not quite "religiously" but generally it's at about the 12 month mark give or take 1 or 2.
I've gotten a short life cell in each of the last 2 years where calibration became difficult. As soon as it was a chore to calibrate it got tossed. Both of these were @ about the 8 month mark. I then treated the new one as an old one (not making use of some of its life) and replaced with the other 2 as I didn't want to deal with changing out cells at different times. |