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Replacing the Descent T1 Battery
NOTICE
You should purchase a replacement battery only from a high-quality manufacturer and a reputable vendor.
Using a low quality battery could result in poor product performance and reduced battery life, especially at low
temperatures. Do not use rechargeable batteries. Rechargeable batteries may have a higher voltage
specification and can cause permanent damage to the device.
To replace the battery, you need a coin or flat screwdriver, a new 3 V CR123A lithium battery, and waterproof
silicone grease. You may also need a replacement battery cap accessory.
The transmitter is powered by a 3 V CR123A lithium battery. A battery is pre-installed at the factory. You must
carefully follow the battery replacement instructions to preserve the transmitter's waterproofing.
1 Insert a coin or flat screwdriver into the slot , and rotate counter-clockwise to unscrew the battery cap.
2 Remove the battery cap and battery.
3 Insert the new battery in the transmitter, with the positive pole facing into the transmitter and the negative
pole facing the battery door.
4 Inspect both gaskets to verify they are clean, undamaged, and fully seated in the grooves.
If the gaskets appear worn or damaged, you can purchase a replacement battery cap kit, including a cap,
gaskets, and silicone grease. Go to the Descent T1 product page on garmin.com to purchase accessories.
5 Apply a thin layer of waterproof silicone grease to both gaskets.
6 Replace the battery cap into the transmitter, and fully tighten it.
Data Management
NOTE: The device is not compatible with Windows 95, 98, Me, Windows NT
®
, and Mac
®
OS 10.3 and earlier.
Deleting Files
NOTICE
If you do not know the purpose of a file, do not delete it. Your device memory contains important system files
that should not be deleted.
1 Open the Garmin drive or volume.
2 If necessary, open a folder or volume.
3 Select a file.
4 Press the Delete key on your keyboard.
NOTE: Mac operating systems provide limited support for MTP file transfer mode. You must open the
Garmin drive on a Windows operating system. You should use the Garmin Express application to remove
music files from your device.
Device Information 141
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