Dormouse...you're quickly becoming my favorite poster...and I'm sure to quickly become the newbie that gets on your nerves.
A couple of questions:
1. How can you tell the difference between the D1 and the D2? I want to confirm that my 51 Duo is in fact a D2.
2. Do you have suggestions for backup D2
batteries? I don't want to do the 51 Duo again because the $50 price tag is a rip off but I want to be able to use all my current chargers rather than have two sets to fit the different kinds.
Thanks!