This plug in 5 Volt electric adapter is an optional accessory for Acolyte products that feature an AC jack. 

• 5 Volt AC Plug In Adapter
• Use this adapter for Acolyte E-Spotlytes and all Light Bases marked AC 5V Adapter Capable.
• Please note whether a product uses a 5V or a 12V Adapter.

Now, you can use Acolyte products in permanent displays or applications requiring longer life without having to change batteries.