# UPS Setup using LI-Ion Batteries ..#2

#### Steve Spence

Joined Jul 15, 2016
2
+1

First step of every design project is to understand the advantages/disadvantages of the choices. Li-Po main advantages are light weight... which is great for portable electronics but does not really matter in a UPS that sits around waiting for a power failure. Li also gives lots of recharge cycles... again does not matter in UPS. Main advantages of lead acid batteries: very cheap for power delivered, delivers high peak currents, long shelf life with proper maintenance. Guess what is ideally suited for UPS service?
Ever hear of an online UPS? The batteries are continually being cycled, not "waiting for a failure".