I want to use my Garmin Zumo XT on my e-bike. I will connect it to an Anker PowerCore III 10K Model A1247 power bank. The capacity is 10000mAh 3.7 Vdc/37W.
How much longer can I use my Garmin Zumo XT when connected to the Anker power bank?
Garmin Zumo XT With Anker Power Bank
- Peobody
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Re: Garmin Zumo XT With Anker Power Bank
I can't answer your question but one thing there seems to be a lot of agreement about is that the usb cable jack on the XT is one of its physical weak points. My first XT was replaced under warranty because of a failed jack. I don't know what kind of riding you do on your e-bike but I know that jack won't stand up to much abruptness and vibration. Also, I had 2.4v usb out in my car and the XT would not charge using the Garmin cable. I had to replace it with a 'power only' cable. I never determined the details but researched it enough to learn that the XT would not charge at a rate faster than depletion when using a combined data/power cable.
2008 Honda GL1800 Goldwing
1995 Kawasaki ZG1000 Concours
zūmo XT linked to Cardo Packtalk Bold and iPhone SE.
1995 Kawasaki ZG1000 Concours
zūmo XT linked to Cardo Packtalk Bold and iPhone SE.
- lkraus
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Re: Garmin Zumo XT With Anker Power Bank
The only measurements I have made were the current draw for the XT while connected to a 13.6 VDC power supply. The other numbers are calculated and do not reflect power loss in the converter box (which provides 5.2 VDC).
If I remember my electrical theory correctly, 10,000 mAh = 10 Ah, so at 70% brightness, 10Ah/6.120A= 1.6 hours.
The the converter box will not be used, but I suspect that real-world results will still be less than the theoretical maximum.
Code: Select all
Brightness Amps@13.6V Watts Amps@5V
20% 0.42 5.712 1.142
50% 0.43 5.848 1.170
70% 0.45 6.120 1.244
80% 0.48 6.528 1.306
90% 0.52 7.072 1.141
100% 0.58 7.888 1.578
The the converter box will not be used, but I suspect that real-world results will still be less than the theoretical maximum.
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2006 R1200RT
Galaxy S10<>Zumo XT<>Sena 20S
2006 R1200RT
Galaxy S10<>Zumo XT<>Sena 20S