I've bought a replacement battery with 1250 mAh. But it behaves strage:

It starts loading on the stone, reaches 100%. Then, still on the stone, after about 30 - 60 minutes it starts unloading as if I removed the phone from the stone.

I have to remove the Pre from the stone and put it back, then it startes loading again.

So I have no chance to put the Pre on the stone over night to have a fully loaded phone next day.

Any ideas? This is the 2nd battery of this 1250 mAh type.