This All New Higher Power Eon Lithium 52v Li-ion 20ah Battery fits perfectly into a variety of small bikes such as the Razor MX series. With a 150amp discharge rating you will be sure to get a new level of PUNCH that you need for your light weight mini moto. This is one of our favorite packs in the line up because it is so universal and easy to build around.  *Pack comes with xt-90 discharge port and xt-60 charge port. Specifications 52v (58v Max) 20ah (+-5%) 150 Amp Rated Output 6" x 7" x 6" Fits in Stock Razer MX500/650 Tray (Top Bar Need Removed) xt-90 Discharge Port xt-60 Charge Port 20 AMP Fast Charge Capable  This battery DOES NOT FIT in ETM, Mototec or Funbikes Chassis!