Increase UPS run-time with bigger batteries?

Click For Summary
SUMMARY

To increase the runtime of a UPS system, using higher amp-hour (AH) capacity sealed lead acid batteries is effective, provided they maintain a total voltage of 24 volts. However, it is crucial to note that the UPS must be rated to handle the larger batteries; otherwise, purchasing a larger UPS is recommended. Additionally, battery condition significantly impacts runtime, with a replacement interval of every 2-3 years suggested for optimal performance. Monitoring the output voltage during transfer to backup power is essential, as a voltage drop below 100V indicates the need for battery replacement.

PREREQUISITES
  • Understanding of UPS (Uninterruptible Power Supply) systems
  • Knowledge of sealed lead acid battery specifications
  • Familiarity with amp-hour (AH) capacity ratings
  • Basic electrical concepts, including voltage and power ratings
NEXT STEPS
  • Research the specifications and ratings of larger UPS systems
  • Learn about the maintenance and lifecycle of sealed lead acid batteries
  • Investigate battery monitoring techniques for UPS systems
  • Explore the impact of battery condition on UPS performance
USEFUL FOR

This discussion is beneficial for UPS users, IT professionals, and anyone responsible for maintaining backup power systems, particularly those looking to optimize runtime and battery performance.

longneck
Messages
1
Reaction score
0
i have two UPS's that protect my computers and entertainment system. I'm at less than half the kva rating of each of the UPS's but the runtime is too low for my liking. they both run with 4 qty 6V sealed lead acid batteries.

my question is: can i simply use higher AH capacity batteries provided they're sealed lead acid, and the total voltage is 24 volts?
 
Engineering news on Phys.org
You could increase the run time of the UPS by increasing the amp-hours of the batteries. However, your UPS is only rated for the batteries they already have. It would be best to buy a larger UPS that is rated to handle the larger batteries.
Another thing that would affect runtime is battery condition. Batteries in your UPS should be changed every 2-3 years. If you notice that your UPS is running at a low output voltage (< 100V) early in its tranfer to backup power, then you should change your batteries.
 

Similar threads

  • · Replies 5 ·
Replies
5
Views
4K
Replies
11
Views
2K
  • · Replies 7 ·
Replies
7
Views
2K
  • · Replies 14 ·
Replies
14
Views
3K
  • · Replies 26 ·
Replies
26
Views
4K
Replies
7
Views
3K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 8 ·
Replies
8
Views
3K
Replies
9
Views
4K
  • · Replies 4 ·
Replies
4
Views
10K