A handy little issue

[WiNgNuTz]

Ok, so im thinking it may not be the starter motor thats causing this problem now, as the last couple of days have seen a bit of a development. After originally posting this thread, the problem kinda went away for a few days, but then came back with a vengeance. Thursday evening when i finished work, i got in the car and when i tried to start it, i got nothing. Gave the starter a few love taps with my big tool (giggidy), still nothing. A few more taps later, and the starter turns, but by this point, the battery is so weak, it will not fire. Ended up having to bumpstart it down the nearest hill. Then all was fine again until yesterday. Went to take my brother to work, and i had nothing at all, no dash lights on first OR second click, and really dim interior lights. Borrowed mums car to take him to work, but when i went to get the missus from her work, again, nothing. Got a mate to give me a jump, and it fired up first time, no problem. Got home no worries, then go to take the missus to work again this morning, and its deader than a dead thing...dim interior lights again, and nothing from the dash.

Is Connor gonna come along and tell me its still the starter motor, or could i be right in thinking it could be the battery/alternator? Worst thing is that the battery is the one that i ran in the China 1.4, and is only rated at 400A, so its always been a bit lethargic in starting a diesel. Could i have cooked the battery? And where the hell am i meant to get a replacement on a frigging Sunday!?!