I have two Tekkeon MP1550's and I'm experiencing problems I've not seen posted here. I was wondering if any of you that are using the MP1550 might be able to assist. I am only getting about 15-20 minutes of power before the three LED's go dark. If I pull the batteries from the MP1550 and test them they all show indication of having a full charge.

This occurs with any of 5 sets of 4xAA batteries, fully charged, ranging from 2000mAh to 2500mAh. I have three different USB Nokia charging cables - all test good for continuity and no shorts. All five 4xAA battery sets are brand new - two sets are Energizer E2 2500mAh NiMH, three sets are Duracel 2000mAh NiMH. All of these sets have been charged 2-3 times now but I don't believe they have ever been fully discharged. The MP1550 (both of them) indicate no power long before they should.

I did continue to use the N800 long after the LED's went dark on the MP1550 once. The N800 seemed to indicat that it was still charging but battery life was about what one would expect from the internal battery alone from that point forward (i.e. no additional battery life from the MP1550 once the LED's went dark).

I currently have one of the Duracel sets that the MP1550's report as discharged in a flashlight and it has been lit strong for hours, shows no signs of dimming.

The batteries themselves could be the root cause but I rather doubt that 5 new sets would all be defective. I would have thought the MP1550 to be the problem but I have two of them, both new, and they both behave this way.

Any input / suggestions would be appreciated. Thanks!