TMS Ytz14s Motorcycle Agm Maintenance Free Battery for Honda Shadow Spirit KTM Superenduro Supermoto Adventure Yamaha Vmax 1700 Maintenance-free, no acid water needed, never needs re-filling Advanced lead-calcium technology pumps up starting power Long lasting which means High Performance Maintenance Free batteries will last up to three times longer than conventional batteries. AGM batteries hold voltage longer and need less charging in standby or storage mode Dimension: 150mm(5 7/8inch)x 86mm(3 3/8inch) x 112mm(4 3/8 inch)