I have a 17670 1800mAh 3.7 batt that reads proper voltage using DMM but it will not work in PV (atty not firing). Just curious, does this make sense? I only have one right now.(17670 batt).. so I can't test another one yet. If I put 2 cr123 3.0 in same will work on same PV with everything else the same. Does a battery that reads proper voltage with meter neccessarily mean it should function or does putting under 3.2 ohm load cause a normal reading battery (with no load) to crap out immediately under a load? I take batt out test it wth meter and get 4.1 or so volt reading with leads of the meter on the battery.