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Ninebot ES4 -ES4


viprit

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Hi, I've been using an ES2 with the ES4 Battery upgrade since around January 9th, the app says that I've clocked up 193 miles of use. This morning I had two unexpected cut outs where the power just died and the scooter switched off. The first was on level ground, the second was going down a short hill that I normally travel down with acceleration off and my heel on the rear brake.

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Did you notice it beeping at all? Apparently it will shut off if you try going down a hill/regen braking at 100% battery charge, to prevent overcharging the battery. It usually beeps like crazy to warn you of this though. If not, I guess I might be worth disassembling/taking a look at the main board and/or control board. 

But take my advice with a grain of salt, all my knowledge comes from taking apart an es1 and one of those auction es4 bird scooters completely.. And online research.

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