Electrical issues battery is not charging

My battery wont charge. I have replaced battery, alternator, and camshaft position sensor. Jump car because battery is still not charging. It intermittently charges with intermittent battery light coming on. Rpm's will shoot up to 1500 to try to charge it but wont. Then if I put it in drive it shutters and wont give me power at the gas pedal but will stay running. Lights and dash gauges will go on and off. I am lost at this point on what else to do. No check engine light at anytime!