Radiomaster Zorro CR2032 Holder for Main board V2.2.

This mod is for Radiomaster Zorro with the main board v2.2. Note the missing component circled in red. Other versions of the main board have this component installed and may make fitting the larger holder difficult. 

The original CR1220 button cell only lasts a couple of years. A much larger CR2032 size cell installed with this cell holder that can last 10yrs or more. 

Here is a size comparison, and the + and - contacts transferred over. This holder is designed to reuse the + and - contacts of the original CR1220 cell holder. 

Installed. Note the larger holder overlapping the missing component's pads.

Larger CR2032 in place.

A couple of installation tips.

After transferring over the positive and negative contacts onto the new printed cradle, do a dry trial fit to verify that the locking mechanism on the positive contact is able to engage and lock in the CR2032 coin cell.

When soldering the contacts, place the cradle with the contacts over the solder pads to line things up. It may be easier to solder the positive contact first, while holding the cradle in place with a finger in the cradle.