Applicable models: This 800mAh 3.7V Li-ion toothbrush replacement battery compatible with Philips Sonicare HX6500, HX6700, HX6800, HX6900, HX8900, HX9300, HX9900 series electric toothbrush. How to Judge Your Toothbrush Model? HX number is marked on the bottom of your toothbrush handle. For example, HX8900 series, including HX8910, HX8920, HX8911, HX8962 ect. And if your handle shows numbers as HX6877/21, they are all HX6800 series, the digits behind "/" only refer to exact model, color of the handle or this was sold as package. If you have any doubts, please always check with us before placing your order. Please check with us before placing your order If you are uncertain about whether this spare part is compatible with your toothbrush. Our Commitment: All our batteries are checked and tested before shipping. Please note changing battery require basic soldering skills, this battery is not eligible for return and refund once been installed and damaged. Please visit our YouTube channel 'Million Magnets' for installation guide. Note: This is a replacement battery for Philips electric toothbrush,not a OEM product.Any use of the brand name, models or parts designation for this product is made for demonstrating compatibility purposes ONLY.

[Installation Video] All our batteries are checked and tested before shipping. Please note changing battery require basic soldering skills. Please replace the electric toothbrush battery reference the installation guide. [Perfect Battery Replacement] Our toothbrush battery is customized and meet both the quality and design of the original one. Long pins from both end fit exactly to the motherboard, four solder contact points has been upgraded for firmness. [Custom-made metal pads] The V-shaped design of the connection metals can limit the distance between the contacts and the motherboard to avoid short circuits. [When Should Replace] When you start to notice your toothbrush runs out of power quickly after been fully charged, it means the battery has reached its lifespan, you will need to replace a new battery. [Broad Compatibility] This 800mAh 3.7V Li-ion toothbrush replacement battery compatible with Philips Sonicare HX6500, HX6700, HX6800, HX6900, HX8900, HX9300, HX9900 series electric toothbrush.(Note: HX number is marked on the bottom of your toothbrush handle.).

Best Sellers Rank: See Top 100 in Health & Household. Unit Count: 1.00 Count. Main Power Connector Type: 2 Pin. Power Source: Battery Powered. Output Voltage: 3.7 Volts. Material: Metal. Number of Items: 1. Color: Blue. Special Feature: Waterproof. Compatible Devices: Toothbrushes. Brand: WYWY.Wide. : B0B9798LJQ. Manufacturer: KLS. Date First Available: August 10, 2022. Batteries: 1 AA batteries required. (included). Package Dimensions: 2.91 x 0.94 x 0.79 inches; 0.63 Ounces.