According to an article in a Seattle newspaper the new Rayovac batteries are or will be available first at Wal Mart stories. I do not recall the price but it was in line with other re-chargeable I have purchased.
http://seattletimes.nwsource.com/html/businesstechnology/2003494774_batteries260.htmlGE Sanyo Eneloop 4pk AA Rechargeable $15.00 at Fry’s Electronics.
I should note that Fry’s also sell the Lenmar re-chargeable that I consider junk.
Having just found the listed price for the Sanyo Eneloop battery I recall the Wal Mart price for the Rayovac Hybrid is lower. The information on the Rayovac battery states it can be re-charged with any charge designed to recharge mAh batteries. I do not know if that is the case with the Sanyo batteries. Last fall I purchased and returned some Sanyo rechargeables. The reason was the large diameter would not allow them to fit into a Mini Mag light. I had to push one out with a wooden dowl. I have found a least one other brand that is a little tight. Use care with batteries it appears there is not a standard on size and an oversize battery can damage a gps battery holder.