[Lenny400] Replacement batteries

[David Boddie]

It isn't a priority for me to replace the battery in the minibook but a
discussion a while ago led to the idea that a replacement might be sourced
from stores that sell accessories for radio control model planes, boats,
cars, etc.

What constraints on the battery, other than 7.4V, the size and maybe also
the capacity do I need to be aware of? I'm mostly thinking about issues
related to the recharging circuit in the minibook itself.

David