imc CRONOS-PL/-SL/compact - Getting Started, Version 5 R 7 - 2018-06-28
© 2018 imc Meßsysteme GmbH
Rechargeable accumulators and batteries
21
Notes on Li-ion Smart Batteries:
·
Failing to adhere to the recommended temperature ranges for storing, charging and discharging will
not render the battery pack unsafe but will reduce its life expectancy and capacity.
·
If Smart Batteries are stored in low charge state (<10%) they will age faster.
·
When storing discharged Smart Batteries, internal deep discharge protection circuitry may get
activated. This will cause the following charge cycle to run through a reactivation procedure,
starting with a very low charging current. This may prolong the required charging time.
·
Prolonged storage of discharged batteries is not recommended and may cause irreversible damage
to the battery!
·
The battery may temporarily deactivate itself in response to:
-excessive temperature
-excessive discharge current (e.g. due to short circuit)
-insufficient cell voltage (to prevent discharge)
Otherwise the UPS is operable as long as the battery does not prevent discharge.
·
Once the passive temperature fuse has been triggered, it cannot be reset and thus renders the
battery pack unusable. The rated temperature may not be exceeded!
·
For safety reasons, the Li-ion batteries may not be exposed to temperatures exceeding 100°C
!
Note
In order to preserve maximum life expectancy of the Smart Batteries they should be recharged at least
every 3 months. The device must be switched on for charging!
State of charge indicator of the Li-ion batteries
The state of charge of the Li-ion batteries is indicated by different signal patterns of the LEDs. The
position of the LEDs on your measurement device can differ from the pictures below. The following signal
patterns can be interpreted as follows:
state of charge:
75% to 100%
50% to 74%
25% to 49%
10% to 24%
Flashing at 2 Hz
<10%
During active charging the last active one of the four green status LEDs flashes at a rate of approx one
second. In contrast to this, the warning signal at very low state of charge (<10%) consists in the
lowermost (“25”) flashing at an even faster rate.
The UPS Status LED is bicolor. In case of an error it flashes red.
