21.6V Li Ion Battery Replacement 4000mah for Vacuum Cleaner Sweeper Accessories

Feature: 1. 4000mah high?capacity battery offers long?lasting performance and durability. 2. Protect your battery, integrated microchip prevents overcharging, over discharge, over current. 3. Provides short circuit protection and steady voltage circuit to lengthen battery life and more safer. 4. Easy to replace, just take out the power supply in the machine and replace it with a new power supply. 5. Quick charging and easy to install. Improved battery cell, better quality and more durable than others. Specification: Item Type: Li-ion Battery Material: ABS+PC Color: As shown in the picture Product Size: Approx. 14.5x8x12cm / 5.7x3.1x4.7in Weight: Approx. 634g / 22.4oz Voltage: 21.6 V Power Supply: Polymer lithium ion battery 4000mAh (included) . Package List: 1 x Li-ion Battery1 x Instruction Manual Note: 1. Please allow 1?2in error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.3. Pay attention to the battery storage environment, waterproof and fireproof, the battery needs to be charged and discharged to activate the aging when it is not used for a long time.