Battery Capacity 28 Ah Battery Type Lead Acid/VRLA SMF Battery Voltage 12V Warranty 1 Year Weight 7KG Dimensions 180 X 80 X 170 MM The Amptek 12V 28Ah Sealed Maintenance Free (SMF) lead-acid battery is an excellent choice for powering electric bikes and scooters. This particular SMF battery is a sealed, rechargeable unit that uses a gel-based solution, eliminating the need for regular maintenance. Typically, it can endure between 200 and 250 charging cycles. The Amptek lead-acid battery boasts a depth of discharge of 85% and operates with an impressive efficiency of 95%. Depending on how frequently it is used and the number of charging cycles it undergoes, the battery's lifespan ranges from approximately 1.3 to 2.5 years. Yes, I am interested!