UPSI-1208D
Revision 1
29
F14 Recommendations for a long UPS service life
Over time, the capacity of the Supercaps decreases and the ESR (equivalent series resistance) increases.
However, EOL is often defined as a reduction in capacity to 70 % and a doubling of the ESR. An important
aspect for the aging of the Supercaps is the end-of-charge voltage and the operating temperature.
LiFePO4 batteries also age over time depending on cycles, operating temperature and the level of the end-
of-charge voltage. The end-of-charge voltages are optimized so that they are at an optimium between service
life and performance.
To extend the lifetime of the system, the UPS and energy storage should not be placed near sources of heat
and should be placed within good air-circulation. When using LiFePO4 batteries, a larger capacity than actually
required should always be used. The less deep the packs are discharged, the longer the service life lasts.
F15 Maintenance
The UPS contains no serviceable parts. In case of a malfunction the upstream power source has to be discon-
nected, the battery and cables have to be removed. Use a dry cloth for cleaning!
F16 Disposal
Electric and electronic devices must not be disposed with domestic waste!
Please consider to each country’s own regulation about recycling and disposal
of used batteries at the end of their lifetime or resending to any recycling orga-
nization.
F17 Disclaimer
We, the Bicker Elektronik GmbH, have checked the contents of this document for compliance with the hard-
ware and software described. Nevertheless, deviations can not be ruled out, so we assume no liability for the
complete agreement. The information in this publication is checked regularly, necessary corrections are inclu-
ded in the updated versions.
Suggestions for improvement as well as tips and criticism are always welcome.
