I spent part of Sunday measuring my battery current consumption with my old and new GPS/Radio combinations. I was a bit shocked to find the new GPS consumes battery juice at about TWICE the rate of the old Magellan:
Device measured Current Drain (amps)
Magellan GPS (old, monochrome, very little mapping) .090
Garmin 350 GPS (great GPS, good color maps) .16
TH-D7 Ham Radio HT, receive only, no GPS .16
TH-D7 transmitting, 5 Watts high power, no GPS 1.60
TH-D7 transmitting, 5 Watts high power, with Garmin on 3.20 (Ouch)
TH-D7 transmitting, 5 Watts high power, with Magellan 1.48
So no wonder my batteries go flat when I talk a lot on voice on the radio. The Tracker / Locator beacon function only occurs every 30 seconds and transmits for about half a second each time so that doesn't eat the battery too terribly. But yacking on voice.... Mercy. This certainly proves I would need much heavier batteries (or a hub generator, which is not only expensive but I fear would slow me down) for a bike trip lasting longer than 2 hours, UNLESS I turned off the voice function and just let the beacon run by itself. BAH
BG before ride home: 223 BG after getting home, no snack yet: 136
Evening stats from the GPS: Total Distance Miles: 7.43
Overall average speed Moving Avg Max Speed
09.9 Mph 11.2 mph 22.0 mph
Total Trip time Moving Time Stopped Time
45:00 mins 39:52 mins 05:08 mins
I was surprised at the scarcity of riders this morning. Yes, the wind was gusty yesterday and it rained & snowed a little in the area (in the East Mountains we were surprised to find at least an inch of snow on the ground, with the temperature barely freezing at 31 degrees). However, it was relatively sunny and clear in Albuquerque when I drove in this morning so of course I rode the bike. It was coated with a couple inches of snow and slush when I left home but it was almost dried off when I got to my parking space. Of course there was still a bit of ice and moisture in my webbed recumbent seat but it wasn't bad and seemed to dry up in only a mile or so of pedaling warmth. I passed maybe 3 other cyclists and ONE runner (who evidently stays slim and shapely by jogging even when it's a bit cold), compared to the usual 10 or more cyclists and dog walkers I usually see.
Awakening BG: 155 Post-Ride BG: 82
Morning Stats from the GPS: Total Miles: 7.43 Overall average speed Moving Avg Max Speed
10.1 Mph 11.5 mph 20.9 mph
Total Trip time Moving Time Stopped Time
44:05 mins 38:49 mins 05:10 mins
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