Table 3 Battery Level Indicator - Vaisala VaiNet RFL100 User Manual

RFL100 User Guide
2.3 RFL100 batteries
Main batteries
RFL100 data logger is powered by two AA size primary (non-rechargeable) batteries with 1.5 V
nominal voltage. Operation of the data logger always requires that compatible batteries with
sufficient voltage are in place. When replacing batteries, always use new batteries, not partially
discharged ones. Minimum battery voltage for operation is 2.15 V in series.
Compatible battery types are:
• 1.5 V alkaline batteries, designation IEC-LR6, ANSI 15A. Standard choice for most
applications.
• 1.5 V lithium batteries, designation IEC-FR14505 (FR6), ANSI 15-LF. Typically higher
capacity, better in cold temperatures.
CAUTION!
Use of rechargeable batteries is not recommended. RFL100 will not charge
batteries even if the service port is connected to a power supply.
Clock battery
RFL100 also has a separate 3 V lithium battery (type CR1/3N button cell) to keep the real-time
clock powered when the device is switched off. This battery is good for 10 years, and should
only be replaced if the data logger display shows the low clock battery error code Err 200.
2.3.1 Battery level indicator
Battery level indicator displays an estimate of the capacity remaining in the main batteries of the
data logger. It is based on typical behavior of alkaline batteries in this application.
Table 3 Battery level indicator
Symbol on display
12
Do not use batteries with a nominal voltage higher than 1.5 V.
Description
Full batteries.
One quarter of battery capacity used.
Half of the battery capacity used.
Low battery alarm is activated by viewLinc at this level.
Remaining battery capacity is typically enough for 2 ... 4 weeks of
normal operation. Replace batteries.
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