Ninebot ESX Error Code 45

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Error 45 on a Ninebot ESX.
"built in battery is overly discharged and not available to charge. Please replace battery. (45)"

If your Segway Ninebot ESX(ES1, ES2, ES3, or ES4) or Segway SNSC (1.0 or 1.1) is beeping or has a red wrench icon and flashes this code, read below.

If you clicked the wrong error code, go back to the Error Code Index.

Previous Error Code: Ninebot ESX Error Code 44 - Next Error Code: Ninebot ESX Error Code 46

On Ninebot Max/G30, this error code is Ninebot Max Error Code 45.

Cause

Error 45 on a Ninebot ESX scooter is related to issues with the internal battery being "overly discharged".

This is similar to Error 19, but Error 45 and Error 46 are solvable.

Error 45 occurs when the internal batteries are left for too long or somehow end up discharging lower than the BMS should normally allow for.

Fix

If the battery only recently became overly discharged it may still be able to be revived.

Take extreme care and monitor the temperature when attempting to revive it and never charge fully dead lithium batteries.

If the charger oscillates between green and red when plugging in you may be able to leave it for a long time (several hours) and then after unplugging and plugging it back in it may start charging normally.