AA NiMHs may be too large, but AAA NiMHs might both fit and still be cheaper and easier to find than the exact match cells to the originals. I think they are 4/5 AA or 4/3 AA, one or the other. Don't quote me on that. I've looked in to 1400 recelling, but it was a long time ago. Try a google search on site:applefritter.com