The problem for people who think, An external power source is best, you are reminded of that flap that has to be opened to be charged. When on the move, i think, you should think about that because the slightest bump could see that flap Gone...

> N97: BP-4L measures 65.92 x 43.56 x 4.83 mm
5800: BL-5J measures 59.89 x 37.80 x 5.57mm
N9: BV-5JW measures 58.5 x 38 x 5.6mm <

Thanks for those measurements. Need to do some thinking.