Working with the Lithium-Ion Battery 175
Using the External Battery Charger (N9910X–872)
Important: Read the safety information for the External Charger on page 190.
External Battery Charger (N9910X–872)
The external battery charger (N9910X–872), lets you charge a fully depleted
battery in approximately three hours. It is a two bay, level–3 stand-alone battery
charger that is compliant with the standard Smart Battery System. The two bays
are charged sequentially on a first-come, first-served basis, though a discharge
can be performed in the left bay while the right bay is charging. It uses an
external universal switching power supply
External Battery Charger LED
Reconditioning – the accuracy of the
battery’s internal LED charge gauge is
being renewed. See “Reconditioning
Batteries.”
For more information, refer to the Instruction Manual included with the external
battery charger.
Reconditioning the Battery
The battery contains electronics that monitors battery usage and tracks how
much capacity is available. This function can become less accurate because of
temperature fluctuations, aging, self-discharge, repeated partial charging, and
other factors. Reconditioning - also known as recalibrating - restores the
accuracy of the battery capacity tracking system.
Reconditioning does NOT affect actual battery performance. It only recalibrates
the charge level indicator.
Reconditioning is done by fully charging the battery, fully discharging it,
recharging it again, and then verifying that the error has been corrected.
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