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Your comes completely assembled. Disassembly only will be required when changing batteries or the bulb.

https://en.wikipedia.org/wiki/Rechargeable_battery

https://en.wikipedia.org/wiki/Rechargeable_alkaline_battery

https://en.wikipedia.org/wiki/Rechargeable_calling_card

Rechargeable Batteries | eBay

Chargers | Koehler-Bright Star | Wilkes-Barre …