Dynavolt MG4L-B replaces YB4L-B Sealed Nano Gel Motorcycle Battery YB4LB
This Gel battery can be mounted in any orientation and EXCEEDS the capacity and cold cranking amperage of the original battery. Dynavolt Nano-Gel Battery, UPGRADE for YB4L-B. Original YB4L-B Dynavolt MG4L-B.