i opted to go with an ipods99.com battery mainly so i didn't have to fool with the molex plug (changing polarity). They have a video on google
http://video.google.com/videoplay?do...26546715798036 which truly is worth a thousand words and have included as part of the "kit" - the mini-screwdriver and prying tool for the case. The battery is only 1700 mAh, larger than the original h300 battery, but not as large as some of the ipod batteries out there. Works for me.