INFORMATIONAJC® replacement compatible with Parks 811B Doppler Medical Battery Exact OEM replacement guaranteed to fit easily and preciselyMaintenance free AGM technology, no need to add acid or water everIMPORTANT: You MUST RE-USE: your existing cabling and hardware. These are replacement batteries only NOTE: It is your responsibility to verify the batteries being ordered match the batteries in your unit prior to placing your order. We are not responsible for incorrect orders UL Recognized ComponentDisclaimer: Our products are not affiliated with or authorized by ParksSPECIFICATIONSAJC® Replacement BatteriesPart # AJC-D1.3SVoltage: 12V (12 Volts) Capacity: 1.3AhTerminals: F1Chemistry: Sealed Lead Acid (AGM)Length 3.82 inWidth 1.69 inHeight 2.05 inWeight: 1.3 lbsBENEFITS OF AJC® REPLACEMENT BATTERIESHigh quality, low cost replacement batteries for thousands of devices.AJC batteries are exact OEM replacements guaranteed to fit easily and precisely.Millions of batteries sold globally.Buy with confidence. AJC batteries are backed by easy 30-day returns and a 12-month warranty.SLA BATTERY CARERecharge batteries after each use to prevent performance decline.Avoid complete discharges.Periodically check terminals for signs of corrosion or other wear which might cause failure.Always store battery fully charged.Store battery in cool, dry place (68°F/20°C).Recycle batteries, do not dispose.