E-bike 2nd battery adapter

E-bike 2nd battery adapter for Silver fish type batteries.

This goes between the frame of the bike and the battery contact plate, you will need to relocate the batt slide piece screw hole by 10 cm.

The slot is for the second batt wire. I recommend adding a batt isolator so no power is present at the contact of the second batt connector when the primary batt is powered on.

My plan is to build a 7amphr battery as a spare/ emergency. On one ride I ran out before I got back home.