Dual Battery EBike with Selector 20 amp Rotary Switch Single battery at a time charging separate Validate Wiring Diagram PLZ

[Mcousine]

Hi please validate my Wiring Diagram with Rotary SW-26 20 AMP switch it's basicaly a light switch continuity when set to 1 Pole 1-2 let current flow when set to 2 pole 3-4 let current flow.

Both Battery are 48V different amph I want more range from the factory Battery decide to add a battery from My other RadRover to help out.

The idea is to put both battery on the rotary switch POSITIVE wire one BAT1 to Terminal rotray 1 and the other BAT2 to Terminal rotary 2.

The Negative is put together on a Common BUS pole.

I plan to use XT60 connection 20 AMP to splice existing cable power Harness

 

[harryS]

Is this what your diagram shows?

-The negatives from each battery and the controller are all common.
-Terminals 2 and 4 on the switch are wired in common to the positive of the controller.
-Terminal 1 on the switch goes to positive of first battery.
-Terminal 3 on the switch goes to positive of second battery.

 

[Mcousine]

Thanks for reply I was pretty sure of my design work like a charm 12 gage wire xt60 connector soldering fun ;-)

Checkout picture here
https://photos.app.goo.gl/siv3rze1X7JBHqnL7

 

[tomjasz]

Jeebus! Cheap but huge! And a 20A limit. For $40 a nice NKK DPDT. Not being remotely critical. It appears a good solution for you. I use this type. This one isn’t in the doecs for my use but its a good example for a photo