ibook replacement battery

[brsboarder]

I was looking a new battery for my ibook g4 12in, 800mhz and wondering if it makes sense to just buy one for likr $40 off ebay, or buy one from newertech or something like that that offers a 53 watt hour battery:
http://eshop.macsales.com/shop/powerbook/battery/ibook-g3-g4-12inch/

But its a lot more money. Whats everyone's opinion on non-apple batteries.

 

[iPhil]

I was looking a new battery for my ibook g4 12in, 800mhz and wondering if it makes sense to just buy one for likr $40 off ebay, or buy one from newertech or something like that that offers a 53 watt hour battery:
http://eshop.macsales.com/shop/powerbook/battery/ibook-g3-g4-12inch/

But its a lot more money. Whats everyone's opinion on non-apple batteries.

Ebay battery shop is hit or miss on working with your iBook..

This will work

 

[brsboarder]

that was the exact link I posted, I was wondering if those batteries are actually better then the original, how much battery time can I expect out of one of those?