![batteries - Why is the negative contact in a battery bay always the side with some sort of spring? - Electrical Engineering Stack Exchange batteries - Why is the negative contact in a battery bay always the side with some sort of spring? - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/63hxC.jpg)
batteries - Why is the negative contact in a battery bay always the side with some sort of spring? - Electrical Engineering Stack Exchange
![Amazon.com: Ampper Side Post Knife Blade Master Switch, 12V / 24V Battery Disconnect Switch Isolator for Marine Car Boat RV ATV Vehicles (with Long Bolt) : Automotive Amazon.com: Ampper Side Post Knife Blade Master Switch, 12V / 24V Battery Disconnect Switch Isolator for Marine Car Boat RV ATV Vehicles (with Long Bolt) : Automotive](https://m.media-amazon.com/images/I/51Ej3Xa64-S.jpg)
Amazon.com: Ampper Side Post Knife Blade Master Switch, 12V / 24V Battery Disconnect Switch Isolator for Marine Car Boat RV ATV Vehicles (with Long Bolt) : Automotive
![Amazon.com: AOPEC Battery Insulation Kit (Fits Most Top And Side Mount Batteries, 40"x7") 1pc : Automotive Amazon.com: AOPEC Battery Insulation Kit (Fits Most Top And Side Mount Batteries, 40"x7") 1pc : Automotive](https://m.media-amazon.com/images/I/81yDHc9rinL.jpg)
Amazon.com: AOPEC Battery Insulation Kit (Fits Most Top And Side Mount Batteries, 40"x7") 1pc : Automotive
![Amazon.com: Ampper Side Post Battery Disconnect Switch, Battery Master Switch Isolator for Power Disconnect Cut Off (with Long Bolt) : Automotive Amazon.com: Ampper Side Post Battery Disconnect Switch, Battery Master Switch Isolator for Power Disconnect Cut Off (with Long Bolt) : Automotive](https://m.media-amazon.com/images/I/61rz1xm3veL.jpg)
Amazon.com: Ampper Side Post Battery Disconnect Switch, Battery Master Switch Isolator for Power Disconnect Cut Off (with Long Bolt) : Automotive
![2pcs/lot 3.7v 5000mah 26650 Led Flashlight Rechargeable Battery Positive And Negative In Same Side With Protection Plate - Rechargeable Batteries - AliExpress 2pcs/lot 3.7v 5000mah 26650 Led Flashlight Rechargeable Battery Positive And Negative In Same Side With Protection Plate - Rechargeable Batteries - AliExpress](https://ae01.alicdn.com/kf/HTB1.AC4NpXXXXbZXXXXq6xXFXXXY.jpg)