User's Manual

Document MV0319P.N

MVN User Manual

To recalibrate the fuel gauge, press the button on the front of the charger. The charger will automatically

begin to charge the battery if the button is not pressed.

The blue LED will flash to indicate that the battery is undergoing the recalibration cycle. During calibration

the discharge resistors will be cooled by the fan. Removing the battery, or pressing the calibration button

again will re-start the process from the beginning.

At the end of this procedure the blue LED will stay constant, indicating a fully calibrated fuel gauge.

Warm environments can cause calibration failure - keep the charger away from direct sunlight or heat

sources.

Impedance-Tracking fuel gauge recalibration is achieved by charging the battery, allowing it to rest,

discharging it and allowing it to rest again as shown below:

 Charge the battery to full charge and allow it to rest for at least 5¼ hrs.

 Discharge the battery to empty and allow it to rest for 5¼ hrs

 At this point the fuel gauge is calibrated, but the battery is partially discharged and will

require a recharge

The temperature during the process must remain between 10°C & 40°C.

5.5.4 What is fuel gauge recalibration and why is it needed?

As the battery ages and is used, its available capacity shrinks - so with each cycle, your device’s runtime

gets a little bit less.

A good rule of thumb is that Li Ion batteries lose 5% capacity per 100 cycles & 5% per year.

For more details on smart charging and recalibration go to www.inspiredenergy.com