battery "pop" when inserting to cradle - what am I doing wrong

[Creakyknees]

The bike is a Himiway "Cruiser". I recharge the battery when it's off of the bike, in the house. Bring the charged battery into the cold / dry garage, insert in the cradle on the bike, and sometimes get a pretty substantial static electricity "pop".

I worry that could be a bad thing for my electronics.

What am I doing wrong / should I do instead?

the bike:

Himiway D3 Cruiser Electric Fat Tire Bike – 750W Motor

Explore the Himiway Cruiser Fat Tire eBike: 750W motor, 80Nm torque, 80-mile range, Shimano 7-speed gearing. Ideal for city streets, rugged trails and long-range adventures.

himiwaybike.com

the cradle:

https://www.aliexpress.us/item/3256804726529698.html

thanks
Creaky
from the pretty dry air of DFW, TX, USA after some impressive storms last night.

 

[E-HP]

The bike is a Himiway "Cruiser". I recharge the battery when it's off of the bike, in the house. Bring the charged battery into the cold / dry garage, insert in the cradle on the bike, and sometimes get a pretty substantial static electricity "pop".

I worry that could be a bad thing for my electronics.

What am I doing wrong / should I do instead?

the bike:

Himiway D3 Cruiser Electric Fat Tire Bike – 750W Motor

Explore the Himiway Cruiser Fat Tire eBike: 750W motor, 80Nm torque, 80-mile range, Shimano 7-speed gearing. Ideal for city streets, rugged trails and long-range adventures.

himiwaybike.com

the cradle:

https://www.aliexpress.us/item/3256804726529698.html

thanks
Creaky
from the pretty dry air of DFW, TX, USA after some impressive storms last night.

Does the battery have an on/off switch?

It's common for sparking from connecting a battery to happen when it's been disconnected for long enough that the capacitors in the controller have discharged. When reconnected, they draw high current for a short period to recharge, and therefore the spark/arc. This may be what is happening in your situation. If so, you should keep an eye on the contacts to make sure they don't deteriorate or cause a loose connection.

 

[Creakyknees]

Does the battery have an on/off switch?

It's common for sparking from connecting a battery to happen when it's been disconnected for long enough that the capacitors in the controller have discharged. When reconnected, they draw high current for a short period to recharge, and therefore the spark/arc. This may be what is happening in your situation. If so, you should keep an eye on the contacts to make sure they don't deteriorate or cause a loose connection.

the battery has a charge indicator but no switch.
will be sure to watch the contacts... thanks!