Starter motor not cranking

[mus_oz]

Cj10jeeper,

Hmm very interesting point about the level of charge. I thought it would be a linear thing ie 1V equivalant to ~ 10% ; 7v = 50% etc etc

From what do you get this info ?
Sorry i dont mean to question ur knowledge , im just curious to learn

 

[cj10jeeper]

Cj10jeeper,

Hmm very interesting point about the level of charge. I thought it would be a linear thing ie 1V equivalant to ~ 10% ; 7v = 50% etc etc

From what do you get this info ?
Sorry i dont mean to question ur knowledge , im just curious to learn

Certainly not linear at all and why it confuses when stating that a 11.5v battery is near dead.

Here's a set of images. I used the first one, but could have taken others that give even lower % charge by voltage:
https://www.google.co.uk/search?q=car+battery+charge+voltage+chart&biw=1138&bih=518&tbm=isch&imgil=O1nPMjMeB3PBBM%253A%253BJMXR9NMrLv4J5M%253Bhttp%25253A%25252F%25252Fwww.marxrv.com%25252F12volt%25252F12volt.htm&source=iu&pf=m&fir=O1nPMjMeB3PBBM%253A%252CJMXR9NMrLv4J5M%252C_&usg=__-rjrCvYiCfa-B_7cMPf7mqIWU4s%3D&ved=0CCwQyjc&ei=CkuQVPeRHNON7AadnICoDg

If you want to do some reading this is good enough to get an understanding without burying you in techno babble:
http://www.batterystuff.com/kb/articles/battery-articles/battery-basics.html