Installation Guide: 3M™ One-Piece GPS (TD4i) Offender Tracking System and Curfew Unit
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3
Charging the Unit
The One-Piece unit can be charged in two different ways; the Cord Charger attachment and the Cordless
Charger. Both charging options can fully charge a depleted battery in 2.5 to 3 hours.
3.1
Cord Charger Attachment
The first method of charging is via the regular cord charger attachment that is supplied in the product kit.
Figure 3: One-Piece GPS Unit with Wall Mount Power Supply and Cord Charger Attachment
The Cord Charger attachment is connected to a wall mount power supply at one end and to the One-
Piece unit’s charging port at the other.
The Cord Charger is attached to the One-Piece unit using two magnets allowing quick and easy
attachment and removal. This method helps to prevent any damage to the device or the wearer in the
event of unintended pulling.
3.2
Cordless Charger
The Cordless Charger is a dedicated attachment including a rechargeable battery that fits to the bottom
of the One-Piece unit. The Cordless Charger connects to a wall mount power supply that recharges its
battery when not in use.
Figure 4: Cordless Charger with Wall Mount Power Supply
