Can MBP be run with internal battery removed?

I'm trying to isolate a problem which I believe — but am not certain — is to do with the battery, so I'd like to take it out and boot the mac. Is this possible?
My old iBook G4 with the removable battery can be run without it, but can this be done on the MBP with internal battery, or is it needed to route the power supply?
TIA

Thanks guys
In fact I have booted the MBP now without the battery in order to test whether that was causing my kernel_task problem (i posted about this in another thread), and it appears not.
Kernel-task is running at over 103%, I'm can't boot at all sometimes, with the machine taking 10 mins to give the login window but then no keyboard input so login is impossible (this also happens in safe mode).
When it does boot (one out of two or three times), it runs fine for about 20 minutes and then things start crashing. I've tried booting of my clone and the symptoms are the same, so its not HD failure.
Bit stumped here, anyone got any suggestions?
(I'm currently posting on my old 2004 iBook G4, slow battered and with a screen that feels like I'm going half blind, but god I love this machine!. As the old saying goes 'they don't make 'em like they used to...' )

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Model Name:          MacBook Pro
Model Identifier:          MacBookPro8,2
Processor Name:          Intel Core i7
Processor Speed:          2.2 GHz
Number of Processors:          1
Total Number of Cores:          4
L2 Cache (per Core):          256 KB
L3 Cache:          6 MB
Memory:          8 GB
Boot ROM Version:          MBP81.0047.B27
SMC Version (system):          1.69f3
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