CHAMBERLAIN / LiftMaster / Craftsman 4228 Replacement Battery for Battery Backup Equipped Garage Door Openers (Packaging May Vary) Medium Description The Chamberlain Replacement Garage Door Opener Battery recharges for up to 20 cycles without grid power. Allow you to get in when the power goes out. It is compatible with Chamberlain battery backup garage door openers. From the Manufacturer Replacement battery for the Chamberlain WD962KD Premium Whisper Drive Plus Garage Access System with EverCharge Standby Power System. This is a Hazmat item and cannot be returned. Features: Note: Packaging may vary. User may get item in black and grey color Replacement battery for battery backup equipped garage door openers. Helps prevent lock outs 4.5 Ah for use in emergency lighting For use with all Chamberlain Garage Door Openers 12 Volt Product Details: Number of Batteries: 1 12V batteries required. (included) Brand: CHAMBERLAIN Battery Cell Composition: Lead Acid Recommended Uses For Product: Game Platform Unit Count: 1.0 Count Manufacturer: ‎Chamberlain Part Number: ‎4228 Item Weight: ‎3.64 pounds Product Dimensions: ‎4 x 2.7 x 3.5 inches Country of Origin: ‎China Item model number: ‎4228 Batteries: ‎1 12V batteries required. (included) Is Discontinued By Manufacturer: ‎No Size: ‎1 Count (Pack of 1) Color: ‎Other Style: ‎Battery Shape: ‎Square Power Source: ‎AC Voltage: ‎12 Volts Item Package Quantity: ‎1 Mounting Type: ‎Door Special Features: ‎Rechargeable Included Components: ‎Replacement Battery For Garage Access Systems Batteries Included?: ‎Yes Batteries Required?: ‎Yes Battery Cell Type: ‎Lead Acid Battery Capacity: ‎4.5 Amp Hours Warranty Description: ‎2 National Stock Number: ‎6140-01-358-3027 Date First Available: April 16, 2009