Battery Gilera Runner 125 Electric Start Models All Years Sealed Battery CB9-B YB9-B 12N9-4B-1 (L:136mm x H:140mm x W:76mm) | IMPORTANT BATTERY INFORMATION We believe that this battery is the correct one for your bike or scooter etc. But please, always check that the dimensions given above will allow it to fit your battery compartment before placing your order. Some models may require the addition of packing for a snug fit but this is generally because we are supplying a far more powerful battery than standard, although smaller in physical size. On the very rare occasion, the battery may be too big so please double check with your original battery. Battery numbers differ with the first letter usually being a brand mark. Different manufacturers use different letters but sometimes for example YT12B-4 is same battery as CT12B-BS, always check | | 
