Replacement 2011 E-Ton Matrix R4-150 150CC Factory Activated, Maintenance Free, Scooter Battery - 12V, 8Ah, UB-YTX9-BS Replacement Battery for 2011 E-Ton Matrix R4-150 150CC Factory Activated, Maintenance Free, Sealed Lead Acid Battery Ready to install. No need to add acid. Leak free, sealed design prevents corrosion. One Year Warranty, Voltage: 12V, Capacity: 8Ah UpStart Battery Brand. On Sale for a Limited Time!