>> Is it an Apple battery or 3rd party ?
> Third party, bought on eBay.

Hum, a good make ?

I had terrible problems with a load of 3rd part ones I bought, can't
remember the name, Power Smart or something.

>> Any lights on the battery ?
> It's showing 3 lights, but if I push on it, the machine crashes (same
> with old battery)

Well, then I'd take the machine apart and make sure all the boards where the
battery plugs in are properly mounted - they can come apart and the power
and charge boards become disconnected.

> I have no other PB to try it in and the old battery charged all right.

Does it still ? 

>> Have you checked that the EMI shielding near the DC in socket isn't
>> shorting to it ?
> Pardon?

There is a known problem (amongst the many on Wallstreets) where the bronze
EMI shielding short to the outer casing of the DC in plug.  When you take
the machine to bits, just check it out.
  
>> Did you do any resets on the machine with the battery in BEFORE you had
>> problems ?
> No. 

Good, because I think that some Apple resets MAY damage 3rd party batteries,
just an observation on a number of occurrences I've seen.

> Sometimes the battery icon in the menu bar shows a battery with a
> black cross on it, at other times it shows a mains plug and 100% in
> brackets.

And if you pull the mains at that point the machine shuts off ?

>> Is the PRAM battery good ?
> Probably not, as the date resets without the main battery in, or when
> it has malfunctioned.

Malfunctioned ?  Any reset will likely clear the date.

Personal I'd suspect a bad battery and return it, or get it tested
elsewhere, but there are SO many bits of the Wally that can cause batteries
not to charge ...

I don't like the machine crashing when you push the battery in though and
would check that over.

HTH

-- 
Best wishes

Malcolm Cornelius - The Powerbook Fanatic
http://www.pbfanatic.co.uk




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