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
LED 3-Arm Frosted Down Tulip Shade Chandelier
Reported Stock: 7
Vendor: Aztec MiniaturesModel: HW2321
$48.95LED 3-Arm Silver Frosted Down Tulip Shade Chandelier
Reported Stock: 1
Vendor: Aztec MiniaturesModel: HW2360
$57.95LED 5-Arm Frosted Down Tulip Shade Chandelier
Reported Stock: 4
Vendor: Aztec MiniaturesModel: HW2323
$79.95LED Antique Gold & Pink Tulip Lamp
Reported Stock: 1
Vendor: Handley House MiniaturesModel: HW2362
$25.95LED Brass Carriage Lamp
Reported Stock: 2
Vendor: New CreationsModel: RB-HW2306
$29.95 $26.96
Save: 10% offLED Copper Large Glass Frosted Tulip Table Lamp
Reported Stock: 10
Vendor: Aztec MiniaturesModel: HW2326
$24.95LED Double Frosted Tulip Wall Sconce
Reported Stock: 2
Vendor: Handley House MiniaturesModel: HW2332
$37.95LED Globe Ceiling Lamp w/ Plastic Globe
Reported Stock: 3
Vendor: New CreationsModel: RB-HW2337
$24.95 $22.46
Save: 10% offLED Large Frosted Glass Tulip Ceiling Lamp
Reported Stock: 17
Vendor: Aztec MiniaturesModel: HW2312
$24.95LED Modern Hanging Lamp w/ Plastic Cone Shade
Reported Stock: 7
Vendor: Aztec MiniaturesModel: HW2317
$24.95LED Modern Hanging Lamp w/ Plastic Round Shade
Reported Stock: 1
Vendor: Handley House MiniaturesModel: HW2316
$24.95