My son's V70 seemed to have developed alternator issues so I replaced the voltage regulator and had him get the battery recharged. Problem solved, ahhhh no. Now sometime it starts and sometimes it just dies. No clicking from the starter just nothing.

So when we had the battery checked. At the posts it had 734 CCA, ok good. At the front jumper point in the engine compartment, the same test came up with 12 CCA. Is this normal or do I have a real issue. I read the Basic Battery Drain Troubleshooting - 101 sticky and I will do that this weekend. The people at the store are thinking starter but I am not sold on that one

 

First thing that I would do is clean and tighten the connections to the battery. Then I'd make sure that the ground is solid.

 

What (the other) Grey Bearded One said... there's obviously a VERY bad connection somewhere between the battery and the engine compartment connection. Chances are VERY good that it's at the battery terminal itself. Remove the cables (first negative, then positive), clean the interfaces between the clamps and the battery (remove any crusty oxidation or other debris). Most folks recommend using a dielectric grease or "regular grease" or even vaseline (a thin coat on the mating surfaces is all you need), to prevent future oxidation. Then make sure you have a solid mechanical connection (that is, you can't wiggle the connector after it's bolted back onto the battery terminal). Make sure that the cable isn't rotting away from the battery clamp (that happens sometimes)... if it is, you'll have to replace either the cable or the connector.

 

Testing at the jumper post is not accurate.

The starter is easy to diagnose. When it does not crank, check power at the starter solenoid. If you have power, you have a bad starter.

It isn't common at all for the battery cables to corrode on that model. It is WAY more common for the connection at the starter solenoid to loosen or corrode. Pull the wire off, clean both ends and tighten the female terminal with some pliers and reconnect.