Skyrich Lithium Ion Batteries are great replacement for classic batteries. We stand behind our batteries; all our batteries go through a rigorous quality control process. You can be assured that when you purchase a Skyrich battery you are getting high quality and high performance power sport battery at an affordable price. Advantages of Lithium Ion Batteries: Less volume and weight- 1/3 of normal lead-acid battery Quick recharge 90% recharged within 6 minutes Excellent cycle life- more than 2000 cycles under JISD standard (lead-acid battery only 150-300 cycles) No spill- no acid inside, no leak problems No pollution- does not contain any acid and heavy metals such as lead, cadmium, mercury