I did a field test of prototype A in February/March 2010.
You can download the raw (and buggy) battery data.
(times are given in UTC if at all)
|2010-02-26 evening||driving first leg, OFF over night|
|2010-02-27 3:32||start with rechargable batteries (Ansmann 2850 mAh, fresh charge)|
|2010-02-27 afternoon||arrive at destination, ON over night|
|2010-02-28 7:10||switch OFF||27 h 38 min|
|2010-02-28 evening||switch ON for some hours, then OFF over night||31 h 33 min|
|2010-03-01 evening||switch ON for some hours, then OFF over night||35 h 43 min|
|2010-03-02 evening||switch ON for some hours, then OFF over night||39 h 21 min|
|2010-03-03 evening||switch ON for some hours until discharged below 3 V||40 h 2 min|
|2010-03-05 12:30||start with fresh alkaline batteries||11 h 32 min|
|2010-03-06||keep ON||35 h 32 min|
|2010-03-07 0:03||switch OFF||35 h 35 min|
|2010-03-07 17:30||switch ON for way home|
|2010-03-07 evening||arrive at home, switch OFF||36 h 57 min|