John Deere Lawn Mower X300 Battery CCA300 Beiter DC Power This 12 Volt Professional Grade battery is an excellent value. We send you (1) 12 volt 35ah, with a CCA ( Cranking Amps) rating of 300. Chemisty Sealed Lead Acid Voltage 12V - Capacity 35Ah CCA 300 Length 7.70 - Width 5.12 - Height 6.63