Battery Model: ARCT00777
This lithium-ion internal battery pack for the Arris TG852G and TG862G cable modem provides back-up power for your Home Phone service if home AC power is lost.
How to tell if the battery in the Arris TG852 or TG862 needs to be replaced:
- Up to 8 hours of standby (hold time) back-up power per battery.
- Installs without tools
LED battery status indicator is on the front panel of the phone modem.
- Solid = Battery good or low.
- Off = Battery missing or dead.
- Flashing = Running on battery when AC power is lost or
- Flashing = Battery is bad if AC power is on – replace battery