[aprssig] $60 WinBook TW700 Tablet - Power Drain Tests - Followup
Stephen H. Smith
wa8lmf2 at aol.com
Tue Feb 10 16:11:44 EST 2015
On 2/9/2015 2:27 PM, JW OH8GEJ julian.white at oh8gej.org [cross_country_wireless]
> Excellent info Stephan
> Looking forward to the internal battery runtimes.
I have now carried out two battery-powered runs following full 100% overnight
charges. Note that this is a new unit whose battery may not yet be
conditioned to full capacity by several full discharge-charge cycles.
I ran the test with the display set to 50% brightness which seems to be the
lowest intensity comfortable for interactive operation. During the tests, I was
running UIview 2.03, the Precision Mapping V9 server and the UZ7HO Soundmodem
software TNC running continuously for off-the-air reception on a busy two meter
channel. I.e. the sound system was in continuous use by the Soundmodem DSP
routines. WiFi was turned on, but no Internet connection was active.
The results: Just about exactly 4 hours run time before the battery hit 5%
capacity and triggered an automatic shutdown. This was a complete
comprehensive shut down (not a "sleep" or "hibernation" mode). I.e. when I
connected the charger and rebooted the machine, the applications that had been
running were not open.
Over the past 24 hours, I have made extensive revisions and additions to my
webpage for this device:
Stephen H. Smith wa8lmf (at) aol.com
EchoLink: Node # 14400 [Think bottom of the 2-meter band]
Home Page: http://wa8lmf.net
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