[Note: ]V11 has two models, one is the button Click-in installation Type battery, and the other is Screw-in installation Type battery. This is the button Click-in Type battery, not compatible with the Screw-in Type battery. This replacement or additional click-in battery is ONLY compatible with the latest (Spring 2020) for V11 Outsize, for Torque Drive and Animal cordless stick vacuums(Not Fit for Fixing Styles with Screws). [4.0Ah High Capacity:] Lithium-ion battery, 4000mAh Capacity, 25.2V, made with high quality cells and long running performance. The battery is based on the size and the function is same with the battery. [Compatible with V11 SV14 Click-in Type:] Compatible with for Torque Drive V11 Outsize V11 Absolute Extra V11 Flu Extra Cordless Stick Vacuums, Detect Absolute Extra, V15 Detect Total Clean Vacuum Cleaner. [No Memory Effect:] It can be or discharged as needed without loss of capacity. Integrated charging indicator: Steady blue means charging or using, light off means charging completed. Flashing red means error occurred. [Safe to Use:] Built-in professional intelligent protection board containing various technical protection such as charge, discharge, temperature control, over current protection and so on. Tested by manufacturer to match products, long-lasting performance. Compatible Models: For V11 (Screw type) colour: Grey material: ABS Package Contents: 1 * V11 Replacement Accessory 1 * Screwdriver 1 * Cleaning Brush 1 * Dust cover Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.