Odec 22.2V 2000mAh Li-ion Rechargeable Battery for Dyson DC31 DC34 DC35 DC44 (NOT Fit Type B or DC44 MK2) 917083-01 91708301 17083-2811 18172-01-04 17083-4211 Handheld Vacuum Cleaner Product Details Part Number: DC31-2 Item Weight: 12.8 ounces Product Dimensions: 4.7 x 3 x 2.8 inches Item model number: DC31 Color: Black Power Source: battery-powered Voltage: 22.2 volts Wattage: 44.4 watts Item Package Quantity: 1 Batteries Included?: No Batteries Required?: No Battery Cell Type: Lithium Ion Shipping Weight: 12.8 ounces Date First Available: December 16, 2015 2000mAh ultra high capacity give a lot of power for the vacuum cleaner to run longer CE and FCC certified, passed vibration, heating, high temperature test No memory effect, can be charged or discharged as needed without loss of capacity Made up with Li-ion eco-friendly materials, no pollution to the environment Built-in microchip prevent the battery from over-charge or over-discharge Extend battery's service life Battery come with low power due to transport security, it may reach topperformance after 3 cycles of full charge and discharge. Clean the battery contacts using a cotton swab with alcohol when necessary,keeps an efficient connection to the device. We recommend using the battery at least once a month, long term idle mayshorten battery's life though it has low self-discharge. Store it in a clean, dry, cool place away from heat and metal objects. Replace for:  Dyson 917083-01, 17083-2811, 18172-01-04, 17083-4211 Compatible Models:  Dyson Handheld Vacuum Cleaner DC31, DC31 Animal, DC31 Animal Exclusive DC34, DC34 Animal, DC34 Animal Exclusive DC35 Animal, DC35 Multi Floor About Odec Odec is a popular brand who has its own professional manufacturer providing afull line of power tool and vacuum cleaner replacement batteries. We focus on the high capacity development and compatibility improvement,confidence to guarantee the batteries can fit the tools like the original onesand even run longer time than OEM batteries at one full charge. Our design and quality control department take responsibility for thevibration, heating, high temperature and high humidity, over charge, overdischarge and short-circuit test. We ensure each product delivered to yourhands was quality checked and in best performance. With Odec professional care 30 days money back and satisfactory customer service within 24 hours.