hese batteries are leakproof, and maintenance free. These are very high quality batteries. 22 AMP Scooter BatteryKey Features Maintenance-Free Valve Regulated Rugged, Compact Design Multiple Applications Float Or Cycle Use Low Self-Discharge Lead Calcium Construction Absorbed Glass Mat Tank Formed Plates Specifications Part Number: ES22-12 Voltage: 12V Capacity At 20hr Rate: 22Ah Dimensions(mm): 181Long 76Wide 167High Terminal: F3