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Charging external ES battery without the scooter. A rig a friend came up with to charge the external battery to 100% : r/ninebot
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How to Install/Replace the External Battery on Ninebot ES1/ES2/ES4, E22, E25 and E45 Scooters - YouTube
Capobranco Shop - Product: KY-ES7 - Additional battery for Ninebot ES1 / ES2 / ES4 / E22E / E45E - Capobranco (NINEBOT SPARE PARTS-Ninebot ES1/ES2/ES4/E22/E25 - Batteries);
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Amazon.com : Segway-Ninebot External Battery Pack for ES1/ES2/ES4 Electric Kick Scooters : Sports & Outdoors
![Amazon.com : Segway-Ninebot External Battery Pack for ES1/ES2/ES4 Electric Kick Scooters : Sports & Outdoors Amazon.com : Segway-Ninebot External Battery Pack for ES1/ES2/ES4 Electric Kick Scooters : Sports & Outdoors](https://m.media-amazon.com/images/I/71sMoe3Lf+L._AC_UF350,350_QL80_.jpg)