I have successfully rebuilt a 1400 battery! Granted, there are some practicality issues with my design: the top cover of the batt (which is only cosmetic - it's the bottom cover that has the latch and faceplate) can't fit. However, it works great: It powers the 1400 just fine - even the battery meter is accurate (and it's lighter too!) Here's a pic:



The soldering was difficult and frustrating - but it was my first time. I have plans for better designs that should allow for the upper cover to fit. I use 4/3A size cells with a rated supply of 3800 mAh.

So, down to business, as I am interested in offering this as a service. I would charge about $40 for parts and about $35 for labor. You (pay) ship me the dead battery (I do need a dead battery, for the parts), and I ship it back to you (USPS Small Flat Rate Box both ways). Should take about a week, factoring in shipping times here.