The genuine Dyson V11 Outsize V15 battery is a rechargeable battery designed for Dyson cordless vacuum cleaners: – Battery capacity: 3600mAh – Battery type: Li-ion (lithium-ion) – Usage time: The battery’s usage time may vary depending on the vacuum cleaner’s mode and suction intensity. Typical usage time for the Dyson V11 Outsize battery can be up to about 60 minutes in Eco mode and 10-15 minutes in Max mode. – Full charge time: The time to fully charge the battery is approximately 4.5 hours. Note that these specifications may vary, and the most accurate details will be provided in the official documentation or technical information from Dyson or the supplier.