# STI normal running voltage **URL:** \ **Category:** Shift518 Automotive\ **Created:** [July 8, 2011, 3:29pm UTC](https://forums.speedlife.net/t/sti-normal-running-voltage/259318 "2011-07-08T15:29:32Z")\ **Posts on this page:** 1\ **Showing post:** 7
**Author:** ![TurboTravis](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/turbotravis/32/6406_2.png) [@TurboTravis](https://forums.speedlife.net/u/TurboTravis)\ **Post date:** [July 8, 2011, 5:28pm UTC](https://forums.speedlife.net/t/sti-normal-running-voltage/259318/7 "2011-07-08T17:28:41Z")
> [@Almost a home owner](https://forums.speedlife.net/t/almost-a-home-owner/43737/31): > > For those with an STI, what is your voltage at during normal idle and around say 4k rpm? > > The past couple days I noticed my STI getting a little sluggish on the start and then today I came back from picking up tires from Gus and when I went to start it back up to put her in my garage the battery was dead. Got it started again with my jumper pack and the running voltage is showing 13.7 at both idle and higher rpms. I’m thinking its just the battery (about 99% sure) but it seems odd that I’m not getting up over 14 while under load. I seem to remember someone say that stock batt was on borrowed time… > [@Local spoiled chick to be on tv](https://forums.speedlife.net/t/local-spoiled-chick-to-be-on-tv/40984/102): > > Nice! What model year is it? If that’s the stock battery, it’s probably close to being on borrowed time. --- _[View the full topic](https://forums.speedlife.net/t/sti-normal-running-voltage/259318)._