Getting Started
Power Guard/Spare Battery Charger Feature
Power Guard
The i 5857 uses the spare battery charger in the Base Unit to provide operational backup in the event of a power failure. With fully charged battery cells in the spare battery charger, you will still be able to place and receive calls from the Handset only, for up to 2 1/2 hours.
The spare battery cells can also be used to replace drained Handset battery cells ensuring uninterrupted use. The spare battery cells are optional and purchased separately.
NOTE: When using the i 5857 during Power Guard mode, audio quality may be compromised due to reduced power availability.
Installation
1.Open the spare battery charger by pressing the release button, located on the right- hand side of the Base Unit. A drawer will open to reveal the spare battery compartment.
2.Place the battery cells in the the spare battery charger with the positive and negative poles aligned in the battery compartment.
3.Push the drawer closed.
The spare battery charger takes 24 hours to fully charge drained battery cells.
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To order battery cells, headsets and additional Handsets (model i 5803 or i 5807), call VTech Customer Service at
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