No transformer needed. The 3 Volt Lithium watch style battery can replaced (#HW2300) and each will last up to 80 hours. Plan them for a spot you can easily reach to flip the switch on and off.
LED Dollhouse Lights
6 Arm Renaissance Crystal Chandelier LED
Reported Stock: 3
Vendor: Aztec MiniaturesModel: HW2361
$295.95LED 3-Arm Frosted Down Tulip Shade Chandelier
Reported Stock: 6
Vendor: Aztec MiniaturesModel: HW2321
$48.95LED 3-Arm Silver Frosted Down Tulip Shade Chandelier
Reported Stock: 2
Vendor: Handley House MiniaturesModel: HW2360
$74.95LED 5-Arm Frosted Down Tulip Shade Chandelier
Reported Stock: 7
Vendor: Handley House MiniaturesModel: HW2323
$81.95LED Antique Gold & Pink Tulip Lamp
Reported Stock: 18
Vendor: Handley House MiniaturesModel: HW2362
$25.95LED Clear Etched Ceiling Lamp
Reported Stock: 1
Vendor: Marys Dollhouse MiniaturesModel: OS-HW2339
$24.95LED Copper Large Glass Frosted Tulip Table Lamp
Reported Stock: 4
Vendor: Foltz MiniaturesModel: RB-HW2326
$24.96LED Fancy Clear Ceiling Lamp w/ Ribbed Plastic Shade
Reported Stock: 12
Vendor: Handley House MiniaturesModel: HW2336
$24.95LED Globe Ceiling Lamp w/ Plastic Globe
Reported Stock: 2
Vendor: Foltz MiniaturesModel: RB-HW2337
$24.96LED Large Frosted Glass Tulip Ceiling Lamp
Reported Stock: 12
Vendor: Handley House MiniaturesModel: HW2312
$24.95LED Large Frosted Glass Tulip Ceiling Lamp
Reported Stock: 2
Vendor: Marys Dollhouse MiniaturesModel: OS-HW2312
$24.95