Originally Posted by potterswheel
New to android, samsung and smartphones. I accidentally discovered that a pre-installed app called "voice dialer" gave me access to many phone settings I could not find in the user manual, including battery info and wifi settings. I tried to test it for "dialing" it misheard what I said and gave me a list of phone config menus. Say "battery info" and you get the battery info. I see a bug in it because it says the battery voltage is 4mV. Uhhh, no. I'm from a hardware background and it ain't 4mV. I looked at the battery and it says 3.7V, 5 Watt-hours. Maybe they meant 3.4V? 3.7V - 4mv? Who knows what they meant. But it does give more battery info.
It's a bug somewhere in kernel or android libs. Battery voltage is reported in volts, without decimals, but "mV" is added after the value. So "4mV" means between 4.00V and 4.30V, and "3mV" is 3.60V to 3.99V (These are proper voltages for Li-ion battery).
But strangely enough, battery percentage is reported correctly by system!