Product details This akko lamp shade illuminates the whole room, has a very long life and lights for up to 18 hours at full charge.It has a 6V  built in battery that can be replaced after several years of service.When connected to charge and still on, it lights up automatically. It has overcharge protection. If not used for more than 3 months, drain the battery and charge it to full. This will ensure a long battery life. Specifications Key Features 18 hours performance time at full charge 20-24hrs transformer charging time fixed charging cable 6V built in battery overcharge protection Long battery life Built in charging cable What’s in the box 1 lamp Specifications Model: HK 270A Size (L x W x H cm): 5x10x18 Main Material: PVC