Welcome to TS,
gigglesme!
I agree that seeking input from your local Mac tech is probably best and fastest, if not the cheapest step. However...
[Begin disclaimer]
QUOTE("Always do as I say @ not as I do...")
When faced with an apparently 'broken' object, I take the path of trying any and all known remedies, first. But, after that, I figure I can't do any more harm!
[end disclaimer]
And I might even learn something!
You may not agree with that philosophy so take the following with that in mind.
Can't help much with the battery, except that checking with the voltmeter may be a waste of time. It really doesn't matter what
it says, if the MacBook won't recognize/accept/charge it.
But, as long as you don't set it to anything but the (DC) voltage range(s), you can just try touching one contact with one of the probes and then move the other probe to all the other contacts. I'm assuming your meter has several DC voltage ranges to select, one that would show 10 to 20 volts should be fine. But the thing could run as low as 5 volts. Setting the meter to the higher ranges won't hurt anything and you can always switch to a lower range to see the actual voltage more easily.
If you don't see any readings with the first probe on the first contact, things won't be too good. However, just move it to the next contact and repeat the procedure of moving the other probe as above.
As long as you don't touch any two contacts with just one probe (and that is probably pretty hard to do, anyway) you won't hurt anything. Even if you get the polarity backwards, you'll just see the meter move the wrong way or a digital meter reading negative.
Thank-you so much for the input i will do.
If all the contact checking shows nothing, you might want to check the continuity of the battery. You can do that, if the meter has Resistance settings. This will apply a very small DC voltage to the probes. If the resistance
always shows infinity ( ∞ ) I doubt you'll ever get it to work, that indicates a break in the circuit, a 'dead' cell or worse.