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Eversense CGM User Guide
Smart Transmitter Battery and
Charging
Q: How long does a fully charged smart transmitter
battery last?
A: A fully charged smart transmitter battery typically
lasts approximately 24 to 36 hours.
Q: How long does it take to charge a smart
transmitter?
A: It takes approximately 15 minutes to fully charge a
smart transmitter when plugged into a wall outlet. It
may take longer if charging via a computer USB port
or when the battery is empty.
Q: What happens if my smart transmitter battery is
completely drained?
A: No glucose readings will be displayed. Always charge
immediately when the smart transmitter battery is
completely drained.
Q: How do I check the smart transmitter battery status?
A: There are three ways to check battery status:
1. Tap
Menu
>
About
>
My Transmitter
. Scroll
down to the Battery Level line that indicates amount
of battery power left.
2. Check the battery symbol in the upper right corner
on the
MY GLUCOSE
screen. A red battery icon
indicates the smart transmitter battery is empty.
3. Power ON the smart transmitter. Press and release
the smart transmitter power button. An orange
LED on the smart transmitter indicates low battery.
A green LED indicates the battery is at least 10%
charged.
Q: On the About > My Transmitter page, the battery
level shows 65% and then drops to 35%.
Why is that?
A: The rate battery levels discharge varies widely based
on use; the same battery model in two devices
will not discharge at the same rate. This is why we
show battery level indicators on this screen in large
increments: 100%, 65%, 35%, 10% and 0%. Our testing
shows that the “Low Battery” alert is triggered
consistently at the point the smart transmitter still has
approximately 2 hours of power left (at about the 10%
indicator level). It is important to charge your battery
when you receive the “Low Battery” alert.
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