12 Volt YTX9 Replacement Sealed AGM Battery for Kandi Go Karts Heartway Aviator (S8) Razor uses this unique bamboo Color:Silver Gray Razor uses this unique bamboo deck for the EcoSmart Metro and it comes with pre drilled screw holes and the four mounting screws to fasten it down tight This superfluous wire is for the optional battery level meter and is not used in three wire throttle and controller applications Slower self discharge rate (longer shelf life) means battery can sit for extended periods of time without constant monitoring They have less internal resistance which offers more CCA amperage than wet batteries