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DLRO10 and DLRO10X
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7. BATTERY MODULE AND CARE
7.1 The Battery Module
The battery module contains lithium cells and has a built-in battery-management
system that controls charging and monitors discharge. This provides a high capacity,
low-weight battery system, which can be recharged at any time. It is not possible for
the user to over-charge or over discharge the battery. For your own convenience it is
best to charge it regularly to keep it topped up, but leaving it in a discharged state
will do no harm.
The front of the battery module has one button and a 10-segment LED display.
Battery Condition
Battery State Indicator
To find the amount of charge in your battery module, whether connected to your
DLRO or separate, press the Battery Condition Button. The Battery State indicator
will light between 1 and 10 segments signifying between 10% and 100% charge
respectively. After a few seconds this display will automatically go out. A single
flashing LED indicates less than 10% charge.
7.2 Battery Charging
Please note - The battery should only be charged within the temperature
range 0 °C to 40 °C.
To charge the battery, your battery module must be removed from the instrument.
Remove the module by pressing on the raised circular area of the retaining clips and
pull the top of the clip away from the instrument body. The module now unplugs
from the base of the instrument.
Plug in the charger or connect to a 12 volt vehicle-type battery using the ‘cigar lighter’
lead provided. The LED “Battery State” indicator will light and show movement
when the battery is charging. The battery may be recharged before it has been fully
discharged. It will normally be recharged to 90% of capacity within 2.5 hours. Full
charge may take up to 4 hours before indicating that the battery is full depending on
the initial state of the battery. When charging is complete the battery management
circuitry will switch off so that over-charging is prevented.
Your battery module can be safely used in a partially charged state and will not suffer
if stored in a discharged state. However, you may wish to have a spare battery that
can be interchanged with the one in use to provide continuous use of your DLRO.
A fully charged battery, even if not used, will self discharge over a period of several
months (faster at higher temperatures). Always check the “Battery State” indicator
before starting work. A fully charged battery will light all segments. A fully discharged
battery will light no segments.
Please note that all batteries suffer a reduced life if exposed to constant
high temperatures. A constant temperature of 30 °C will probably cause the
battery to fail in less than 5 years. 40 °C will shorten its life to 2 years.
