When a Gel Cell battery is charged, no hazardous fumes escape the battery case, gases are processed within the battery itself. YTX5L-BSGEL 12V 4AH Replacement Battery compatible with Honda CRF250X Maintenance Free - 10PK Common uses for the YTX5L-BS GEL: ATVs, Motorcycles, Personal Watercraft, Jet Ski's, Snowmobiles and more.. Requires no addition of water during the life of the battery.