Nokia Net Monitor description (DCT3)

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Test 23 – Information about Battery and Battery Use

Available in: 2100, 3330, 5110, 6150, 6210, 7110, 8210, 8250, 9210(i)

This test displays more general information about the battery, and also current consumption and voltage levels.

Test screen	Help screen

(In Nokia 9210(i) the help screen is different, although most values seem to mean the same)

TxOn: Voltage from the battery when transmitter is active (x.xxx V)

TxOff: Voltage from the battery when transmitter is inactive (x.xxx V)

ChCur: The charging current being delivered to the battery, in milliamps (x.xxx mA). This value generally stays constant during both Ni-MH charging and Li-Ion charging (except when using ACP-7A), except when in the end stage of Li-Ion charging, during which the current is pulsed (See “Test 20 – Battery and Charging Information”). During the pulsed charging, the value will usually fluctuate between 0 and the actual charging current, depending on whether the latest sample was taken during a pulse or not. The maximum value of this charging current varies depending on the charger’s capacity – around 350mA on the ACP-7A, 600-700mA on the ACP-8A, and 800-850mA on the ACP-12A.

Stdby: Expected voltage from the battery in standby mode (x.xxx V). You can check whether your SIM card 's clock can be stopped in Test 51.

Age: Estimate battery age (0 - new, 100 - old) for Li-Ion batteries (the value of this counter is probably based on measurements of work/discharging time of the battery and its capacity (shown in Test 20); this is only a reference!) or 33 for Ni-MH batteries.

CAP: Battery charge level in percent (in older phones, like Nokia 5110, 25 - 1 bar, 50 - 2 bars, 75 - 3, 100 - 4 bars on the right side of the screen; in newer, like Nokia 6210 - 100 - 6 bars, 80 - 4 bars, 60 - 3 bars, 40 - 2 bars, 20 - 1 bar). This indicator (and parameter) is very inaccurate during charging process (it reaches 100 almost immediately) - better use CmAh and Targ parameters then.

Curr: The current power consumption of the unit, in milliamps (x.xxx mA). This is an interesting value, you will notice it changes depending on what the phone is doing. If the lights come on, you will notice the power consumption increases greatly. If the transmitter is going (see “Test 1 – Serving Cell Information (1)”) the power consumption will increase even more (varies depending on how hard the transmitter is outputting and which band). This value is not actually measured it seems, but calculated based on pre-known values by the phone. This is why, for example, if the backlight LEDs have been changed, and usually consume more power especially if the resistors have been bypassed, it is not reflected here.

Tmp: Li-Ion battery temperature (also shown in Test 20 - sometimes both these indicators are different) or 0 (for Ni-MH battery).

CmAh: How many mAh were "loaded" to the battery until now. If it is approximately equal to Targ, the latter parameter raises (or charging is complete). This parameter is cleared after each use of TCH channel (for example: after a call) while charging (with Ni-MH battery) - you can use this tip to extend charging time almost ad infinitum. Noticed it with Nokia 6110 and Li-Ion battery (when turned off and on phone during charging process) too. This value is updated every 14 seconds (Nokia 5110 with standard charger).

Targ: Battery capacity value (in mAh) by which next charging stage is complete (see description of the previous parameter). Noticed, that it's cleared during Li-Ion battery charging (when turned off and on phone during charging process) in Nokia 6110.

Approximate power consumption (this can be changed and modified by many other factors) while using individual channels (Nokia 5xxx and 6xxx):

During transmission (TX parameter value - phone transmission power - can be checked in Test 1) - using SDCC and TFR channels (Nokia 6110):

TX	Power Consumption (Curr)
over 19	92
16-18	99
14-15	105
13	114
12	123
11	136
10	151
9	173
8	198
7	232
6	269
5	300

Conclusion: battery work time depends in a very high degree on the network parameters (most advertising materials contain standby time measured for the phone transmitting with lowest power (highest TX)).

AGCH: 310 mA in Nokia 5110 and 6110.
CCCH and CBCH: Nokia 6110 phones with older software (like 4.73) show 20 and 34 accordingly. I don't know whether this is caused by some bug in their firmware (these values are most probably given in mA/10) or the power consumption is really that high (because Nokia 5130 shows 34 too). Anyway, I checked, that Nokia 5110 (and 6110 v5.31) phones display 3 mA while using CCCH channel. I think that turning off "cell broadcasting" (if it is not supported by your network) can be very "profitable" for your phone (longer standby time etc.)). When the phone collects BTS identification data (for BTS, which will be now used - has stronger signal than previous - see C2 description for details), this value changes to 220 mA (but only for a short while).
NSPS: 55 in both Nokia 5110 and 6110 (is this value in mA or in mA/10?)

Turning on backlight takes 90 mA more, and while charging another 17 mA should be added.

In Nokia 3210 these data are different for different person (does it depend on firmware version, frequency?)

Standby	Reading BTS identification data	Turning on backlight
52 mA	90 mA	+155 mA
8 or 9 mA	?	+159 or +160 mA
53, sometimes (rarely, during short time) 8 mA	93 mA	+158 or +159 mA
8 mA	?	+154 mA

If you know the power consumption, you can calculate approximate battery work time:

900 mAh / 225 mA = 4 hours of talk time (on average).
Please note, that when using SDCC channel the phone initially uses full power and the gradually reduces it.

900 mAh / 5,45 mA = 165 hours of standby time (on average).
Remember, that the phone makes PLU even in standby mode.

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