TD is where I got my original rechargable set and they seemed to have good prices and customer service again this time so I went with them. You may be able to find things cheeper if you look but I am very happy with TD.
http://www.thomas-distributing.com/maha-powerex-mh-c204w-nimh-battery-charger.htm
Dana
Another note for consideration with chargers. The c204w-nimh charger seems a good charger, but could be better in that this charger ONLY looks at PAIRS of AA cells. This assumes each cell in the pair is IDENTICAL in state of discharge, and charge characteristics. Usually cells purchased in 'sets' of 2 or 4 cells are very nearly identical and should have been produced at the same time from the same production run, so using such cells in 'matched sets' and charging in chargers that can only 'see pairs' of cells is not a big issue.
However, if ever you're matched sets get mixed with other cells, or one cell in a set ages differently from its mate, the charger will over-charge one cell, and under charge the other greatly shortening the reliability and life of the cells. This results in having cells that fall short of giving expected recording time. Usually when this occurs, ALL the cells used in mismatched sets need be tossed for new sets, or keep used for less critical applications where running short of expected capacityr is not an issue.
Suggest best type of charger looks at EACH CELL, not just pairs of cells. This type of charger will have a status light for EACH CELL placed into the charger and will charge correctly any combination of cells from a single cell to a full 4 or more cells placed into the charger with NEEDED precision regardless of cell's history and state of charge.
Individual cell monitoring type of charger costs a little more, but insures fullest cell capacity and charge cycle life, and is worth paying twice the cost if needbe for having this ability.
Battery maintenance tips is being updated in the next few weeks on page:
www.sonicstudios.com/batsys98.htm