Hi

> would you happen to know the value I dont have the equipment to
> test d10 and cant see any numbers on it. i had actually read that d10
> and 9 were the same.

This diode is completely uncritical. It simply prevents the battery to
be reverse loaded by the power supply voltage. I used a 1N4148 as
replacment in my CSQ600 which uses a very similar construction. A 1N4001
will work the same (both are widely spread types).

Florian