DIY: Razor E300 electric scooter w/ Kobalt 24V Li-ion power tool battery & cheap controller/throttle - YouTube
Amazon.com: Razor Replacement Battery for 24 Volt 7 Ah Battery for E200 (V13+) and E300 (V11 & V13+) - W13112430185 VICI Brand High Performance : Automotive
Amazon.com: 2 Pack - 12V 7AH BATTERY FOR RAZOR E200 & E300S ELECTRIC SCOOTER : Health & Household