Mighty Max ML35-12 12V 35Ah SLA Battery vs U1 (35 Ah) 12 Volt UB12350 AGM Mobility Scooter & Power Chair Battery with Post Terminals

Both are 12V 35Ah sealed lead-acid U1 batteries with the same footprint, so the choice comes down to terminals and fit. The Mighty Max ML35-12 is the more flexible generic replacement, sold as a fit for Pride Maxima and Revo scooters and other U1 applications. The UPG UB12350 is the safer pick for a mobility scooter or power chair that takes L-shaped post terminals, and it carries a 1-year full replacement warranty. Owners of the UB12350 report proper fit and better scooter performance; the ML35-12 has no comparable owner feedback here.

• Choose the Mighty Max ML35-12 if your device takes a standard U1 battery and you want a general-purpose 35Ah replacement that also lists Pride Maxima and Revo scooters.
• Choose the UPG UB12350 if your scooter or power chair uses L-shaped post terminals and you want a documented 1-year replacement warranty.