Segway External Battery for Ninebot KickScooter ES1
Amazon.com: Jauarta 36.8V 5000mah Electric Kick Scooters External Battery Replacement Electric Kick Scooters External Rechargeable Battery for Ninebot ES2 ES4 : Sports & Outdoors
Bad connection between new external battery and my ninebot es2, in the app show me 45 km but when i start the ride he go slow, like without external battery, how i