Dangerous connection?

[extrememacko]

Hello all;

I was wondering if any one could offer advice.

I am running nimh cells, not lipo and I have soldered the cells to the motor and speedo, so no deans or any other type of connectors are used. I have also soldered the speedo on off switch lead together so it is always on, so everything is always on and connected. If I then charge the cells with everything hooked up would it damage the speedo in any way?

Thanks!