I have a CF31 mk3 with a original Leadtek GPS installed.
I also have a Custom-Toughbooks Ublox GPS for a CF-31. I think it is a 5 or 6 series.
Any one know the power usage for each? Which uses less power.
CF31 GPS power usage
CF31 GPS power usage
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- Karl Klammer
- Posts: 193
- Joined: Tue Oct 13, 2015 3:19 am
- Location: Old Europe
Re: CF31 GPS power usage
A Leadtek LR95484S gps unit is supposed to have 165mW continious drain when turned on.
Not sure about the Ublox GPS.
Not sure about the Ublox GPS.
Re: CF31 GPS power usage
The Ublox is a LEA 6S
The product sheet lists it to use 121mw @ 3V for continuous
https://www.u-blox.com/sites/default/fi ... 002%29.pdf
I wonder how much of a difference that would make on battery life?
The product sheet lists it to use 121mw @ 3V for continuous
https://www.u-blox.com/sites/default/fi ... 002%29.pdf
I wonder how much of a difference that would make on battery life?
Life will beat you into submission.
- Karl Klammer
- Posts: 193
- Joined: Tue Oct 13, 2015 3:19 am
- Location: Old Europe
Re: CF31 GPS power usage
quick back of the envelope calculation
165-121=44mW per hour of runtime
roughly half a watt in 10-12 hours full charge ...
roughly 1 percent of battery life
best case 5-10 minutes additional runtime when choosing ublox instead of leadtek and having gps always on
165-121=44mW per hour of runtime
roughly half a watt in 10-12 hours full charge ...
roughly 1 percent of battery life
best case 5-10 minutes additional runtime when choosing ublox instead of leadtek and having gps always on
Re: CF31 GPS power usage
Actually the CF31 uses a LR9101. It uses 45mA of power. That converts to 148mW @3.3v
Life will beat you into submission.