Macbook Pro4.1 Cannot Boot Up After Battery Allowed to Drain.

I’m hoping someone can help me troubleshoot some strange behaviour of my Macbook Pro4.1. It’s an early 2008 2.4Ghz Core 2 Duo. I’ve had this running perfectly for the past 2 months with an Apple 65W Magsafe Adaptor, although I recently got an 85w version so I’ve started using that for a bit. I recently read somewhere that it’s good to allow the battery run completely flat once a month or so, so I unplugged the adaptor last week and ran it off the battery for the afternoon. When it was almost done (10% charge left) I went for a shower and came back to find the Macbook powered down. I plugged in the Adaptor back in but I couldn’t get it to start.
I have to say at this point, that my 85w adaptor sometimes needs a wiggle at the magsafe end to get it to work. Despite this though I couldn’t get the green power LED to light or the Macbook to boot up. I then tried my 65W adaptor, which is perfect, and although the LED lights up (first green and then amber) the macbook just doesn’t power up with it. I tried the 85w one again the following day after leaving the macbook disconnected and battery removed overnight, and was pleased to find that it finally booted.  Amazingly, despite having no power at all for the whole night it came back with all my applications running, safari tabs and the documents open! Anyway, I noticed from the menu bar that the battery was not charging and I couldn’t seem to get it to charge. I ran it all day and the system profile showed that the Battery was about half full and had a ‘normal’ condition with about 187 charge cycles. However I can’t run the Macbook off the battery. When the power cuts out from the 85w adaptor the whole macbook shuts down. The battery isn’t doing anything, even after charging all day and being half charged. What’s more neither of my 65w adaptors can start the macbook no matter how many times I try them. Only my 85w one can boot it, but it’s defective so very rarely seems to work. The 65W ones worked perfectly before,so I don’t know what’s changed.
I read the Apple guide to resetting the SMC and have now followed the procedure several times, but it hasn’t helped. I cannot boot the Mac any more. Does this Macbook come with an 85w adaptor or 65w? I’m confused because the 65w ones always worked until now. Also, the battery itself is only 60w.
I’m going to purchase another 85w Adaptor, in the meantime any advice would be very welcome. Thanks for reading!

Thanks again for all the input, very much appreciated.
So, in case of any misunderstanding, both my 60w Magsafe Chargers are perfect. I use them with other MacBooks. No problem. I also used them with this MacBook, prior to the battery going flat. Again, no issues. Despite that, even when I've completely removed this battery and tried to boot the Macbook up from just the chargers, nothing happens at all. There is no power. I've reset the SMC which is the obvious culprit. Still nothing.
The only charger I have which can start it is an 85w one. However that's defective, so I don't get a connection long enough to complete a bootup. The question is, is this normal? Should this MBP only work with an 85w and not a 60w?? And if that's the case, how come it worked on a 60w charger for so long? And why is the battery 60w and not 85w?
thanks again

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