TDS Ranger Getting Started Manual page 28

Care of the PowerBoot Module
The PowerBoot Module contains rechargeable Lithium-Ion (Li-Ion)
cells that power the unit.
Charging guidelines:
• It is not possible to overcharge the batteries. They are self-
regulated. You may leave them on charge indefinitely with no
adverse consequences to their service life.
• Use only the charger supplied with your unit. Use of other
chargers may void your warranty.
• The acceptable temperature range for charging the battery is
between +5°C and +35°C (+41°F and +95°F). This is based on
the internal battery temperature that may be different than the
ambient temperature. If the battery detects a temperature too
high or too low for charging, the LED will flash a warning
sequence. The PowerBoot Module will defer charging until it
detects appropriate temperatures.
Storage guidelines:
• If you have a spare PowerBoot Module that is not in use, do
not store it in a place where temperatures exceed room
temperature for long periods (like the glove box of a vehicle in
warm climates). Long-term storage at very warm temperatures
(over +35°C / +95°F) will reduce service life and will
accelerate the normally very slow loss of charge capacity.
• For prolonged storage situations, store the PowerBoot Module
at approximately 50% charge level.
• Do not store the PowerBoot Module with loose metal parts
(like keys in your pocket) that might short the terminals. This
could result in high currents and dangerously high
temperatures.
26