Thrane&Thrane TT-3080A, User Manual, Page: 37 / 124

Handling of the battery pack Handling of the battery pack Handling of the battery pack Handling of the battery pack The Capsat® Messenger The Capsat® Messenger The Capsat® Messenger The Capsat® Messenger
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complete discharge should be performed after 5-10 partly
discharges.
Avoid exposing the battery pack to direct sunlight, as high
temperature will reduce battery lifetime.
Pull the battery pack out before long-time storage (months), as
this action prevents battery pack degradation.
Please note that the high capacity NiMH-batteries (TT-3686C) are
not recommended for use at temperatures below approximately 5
degrees C. For such low temperature applications the NiCd-
battery (TT-3686D) pack is recommended instead.
Charge indicator:
The battery pack charge status is shown on an LED located on the
right side of the front of the electronics unit. The LED has the
following interpretation :
Constant green light : Fast charging. Charge time is approx. 3h
for NiMH and 2h for NiCd.
Slow flashing green light: Charge pending. This happens when
the battery voltage is too low, i.e. below approx. 10V. Low battery
voltage can occur if the battery has not been used for a long
period of time. Charge pending is proceeded by fast charging.
Fast flashing green light: Maintenance charge. Indicates that the
battery pack is fully charged.
Constant red light : No charge. If the battery pack temperature
e55
° C or drops below 0 ° C the charge is suspended.
Constant yellow light : Slow charge for NiCd only. If the battery
pack temperature drops below 0
° C the charging is slowed down.
Charge time is 10–20 hours.