BATTERY DRAIN (Average Alkaline Values with Lamp Off)
                       14 Jan. 1999 (Add G-III+) 

                                                        Externally
                     Internally Powered                12vdc Powered
                  ------------------------------------   ----------            
                              Antenna Connected#             
       (Original)  Receiver   ------------------   Batt   Receiver
Model    Ver.     Sim    ON*    (Garmin) (Lowe)   Voltage   OFF

                             *GARMIN*
G-II+    2.04     28ma   81ma     NA      118ma    5.35      55ua
G-12XL   3.02     32ma  128ma   141ma      NA      6.00    2810ua
G-12XL   3.51     30ma   76ma    89ma     102ma    5.95      42ua
G-12XL   4.00     15ma   88ma   101ma      NA      5.90       ?   
G-12     3.50      ?     75ma     @        @       6.00       & 
G-III%1  2.04     55ma  134ma   147ma     184ma    5.65      34ua
G-III%2  2.05     49ma   99ma   112ma     130ma    5.85      99ua
G-III+   2.01     34ma   82ma    95ma     105ma    5.94      94ua
St Plt   1.00    105ma  120ma   133ma      NA      8.30      NA

%1 Old G-III with Americas map version 1.03 
%2 New G-III with Americas map version 2.00 instead of 1.03

                            *LOWRANCE*
EEx2     3.00    110ma  110ma     @        @       6.00       ? 
EEx2     3.00   Power-Save mode=40ma to 110ma in three-second cycles
GM100    1.20    180ma  180ma     @        @       6.00       ?
GM100    1.20   Power-Save mode=84ma to 180ma in three-second cycles

# (Garmin = GA26 or GA27)
  (Lowe =         )

Sim=Simulator Mode
* Searching with internal antenna
@ Does not have a powered jack for external antenna
& Does not permit 12vdc without regulator
NA=Not Available for testing

NOTE: Battery drian will increase with drop in battery voltage.

            BACK LIGHTS:

  Garmin G-12 with battery gauge at 3/4:   
    Light ON max:    Add 17ma
  Garmin G-III:
    Light ON Low     Add 16ma
    Light ON Med     Add 32ma
    Light ON Max     Add 64ma   
  Street Pilot with full battery gauge:
    Light ON normal: Add 120ma
    Light ON    max: Add 210ma
  Eagle Expedition II with full battery gauge:
    Light ON max:    Add 80ma 
  GM100 with full battery gauge:
    Light ON max:    Add 60ma

The above submitted by Ron Henderson, Jose Camara, and Jack Yeazel

Dave Martindale, using a regulated 5 vdc power supply, made the 
following antenna current measurements:
        Garmin GA-26            12.7 ma
        Trimble hardmount       18.6 ma
        old Lowe                22.0 ma 
        new Lowe                22.8 ma
        Trimble mini OEM        29.0 ma
        Tri-M Mighty Mouse      12.1 ma

       
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     Jack@FinalApproach.net