3Kva UPS with 12V 17Av batteries.

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SUMMARY

The discussion centers on enhancing the backup time of a 3Kva UPS equipped with six 12V 17Ah batteries, which currently provides a maximum of 10 minutes of backup under full load. Users are advised against using car batteries, specifically 12V 125Ah batteries, due to their unsuitability for UPS applications. Instead, the recommendation is to add a dedicated battery bank of deep cycle batteries, provided the UPS documentation supports extended operation beyond the initial 10 minutes.

PREREQUISITES
  • Understanding of UPS specifications and ratings
  • Knowledge of battery types, specifically deep cycle vs. car batteries
  • Familiarity with battery bank configurations
  • Basic electrical concepts related to voltage and amperage
NEXT STEPS
  • Research deep cycle battery options compatible with UPS systems
  • Learn about UPS documentation and continuous load ratings
  • Explore battery bank configurations for extended backup solutions
  • Investigate the implications of mixing different battery types in UPS setups
USEFUL FOR

UPS system users, electrical engineers, and anyone looking to optimize backup power solutions for critical applications.

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I have 3Kva UPS in which it has 6 12V 17Av batteries in it. which give me 10 minutes maximum backup on full load.
What if i would like to increase the backup time,
Can i additionally install car 12V 125Av battery with it?
or additional battery bank with high Av batteries.

Please can anyone guide me whether its feaisable or not.

Thanks
 
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This depends on if the UPS 3Kva rating is continuous or limited to the 10 minutes.

If the UPS documentation says it can run longer, then adding an additional battery bank of high Av batteries is certainly possible.

Plain car batteries are not a good choice for UPS service, you need deep cycle batteries.
Mixing battery types is not a good idea.
 

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