Battery Level

Kremmen · Posted: Fri Nov 30, 2018 3:32 pm Post subject: Battery Level

If I plug my 2699 into Windows via USB and let it charge for hours (and hours) it never gets above 80%.

The 80% is shown by right clicking the device in Windows Explorer then Properties.

So, after some searching I found out how to get into the Garmins diagnostic mode, and that is showing fully charged.

So is Windows battery check flawed ?

My 2599 never gets abive 90% according to Windows.
_________________
Satnav:
Garmin 2599 LMT-D (Indoor test rig)
DashCam:
Viofo A119 V3
Car Average MPG :

Privateer · Posted: Sat Dec 01, 2018 11:30 am Post subject:

Can't say about Windows, but I tend to just connect devices to a computer by USB for data transfer only. Any charging or powering of the device is only done for the duration of data transfer.

Is there a setting in Windows to only charge to a preset percentage? The 80% threshold may be for safety reasons.

If you use mains, battery power pack, or vehicle for charging the Garmin does it always charge back up to 100%?

Out of interest, how do you access the Garmin diagnostic mode?

Regards,
_________________
Robert.
iPhone 6s Plus, iOS 14.0.1: iOS CamerAlert v2.0.7
TomTom GO Mobile iOS 2.3.1; TomTom (UK & ROI and Europe) iOS apps v1.29
Garmin Camper 770 LMT-D

cjay2412 · Lifetime Member Joined: Jun 30, 2008 Posts: 102

it could be for battery longevity. lithium ion battery constantly charged to 100% are usually knackered after 12-18 months keeping the charge between 20-80% they can last for many years

M8TJT · Posted: Sat Dec 01, 2018 3:58 pm Post subject:

Agreed. But that does not fit the OP's case in point. Windows says 80%, device says 100%. Go figure.
I would like to know where K is getting the Windows reading from. I think he is being a bit secretive about that.

Kremmen · Posted: Sat Dec 01, 2018 4:54 pm Post subject:

2nd line of my original post.

Do keep up Very Happy

_________________
Satnav:
Garmin 2599 LMT-D (Indoor test rig)
DashCam:
Viofo A119 V3
Car Average MPG :

M8TJT · Posted: Sat Dec 01, 2018 5:02 pm Post subject:

Ah OK. But I guess that Windows is also guessing, badly.

Kremmen · Posted: Sat Dec 01, 2018 5:48 pm Post subject:

Don't know how Windows calculates it, but it varies.

Tried it earlier with my 2599. When I first plugged it in Windows showed 100% then after a 5 minute trickle charge, USB3 port, it was showing 90%.

The 2699 varies between 80% and 90%.
_________________
Satnav:
Garmin 2599 LMT-D (Indoor test rig)
DashCam:
Viofo A119 V3
Car Average MPG :

	PocketGPS
	Web