How to I handle my battery best?

The battery represents roughly half of the price you paid for your NIU. So it should be maintenanced at least as well as the scooter itself.

[UPDATE: In 2018 NIU themselves published this page pretty much covering this FAQ entries content.]

Daily Use

  • Optimal charging temperature: 10 to 35°C
  • Using-temperature should not exceed -10 to 45°C
  • Do not unnecessarily keep on charging the battery when it is fully charged (Green LED lit on charger)
  • Do not completely drain the battery – try to charge at 10% at the very least.

(long term) Storing

  • Optimal storage temperature: 0 to 20°C
  • Recommended charge of 40-75%
  • Check charge-level every 2 months (e.g. put it into your NIU to get a proper readout)
  • Charge it to 100% when planning to use it again

Tips

To make sure you’re not “overloading” your battery you could use this engery-saving mains socket from Ansman (or something similar):

This automatically cuts of power when it falls below a certain (programmable) threshold, e.g. below 50 watts.

24 thoughts on “How to I handle my battery best?

  1. Hi, I’m wondering if it’s okay to leave my scooter outside during work hours when temperatures drop to about 0 °C or 32 °F and less. Before and after work the scooter is parked in a closed garage without heating. Ambient temperature should be not too cold.

    Thanks!

    Martijn

  2. hello
    i have had to leave my Niu NS1 Sport unused for the last 3 weeks. I have taken out my main battery and the level was at about 55 as recommended

    However i can see from the app that my ECU battery is now at 18% – it was 100% when i left it. Will this be a problem?

    many thanks
    John

  3. You just discovered one of the major flaws on the Niu scooters. The battery is emptied within 3 weeks when not in use, mainly because of the GPS. You can make it go empty slower by disconnecting the battery before you leave. Full drainage is bad for the battery and gives us an empty scooter, the manual says it shouldn’t be below 20%, right?

    => If Niu is reading this: please come up with a smaller adapter in the charger (so I can store it IN the U) and make it usable as a trickle charger (so I can just connect it to the charger until I need to use the scooter).

    1. Your battery is losing points in proportion to its use. My battery looses 1% per 400km but this may vary depending on your charging and driving habits.

  4. My ecu battery is showing 1% in the app. I use it every day. Just a glitch or am i in trouble…..?

    1. I’d say it’s a glitch. You could test it by disconnecting the main battery, enable the alarm system and “simulate” a steal-attempt the next day. If you still get a push message etc I would assume it’s a bug.
      That said, after swapping my ECU for the new (Vodafone) one, my N1 is “offline” since 65days and since they reset my account/data at their side, both of my batteries are at 0% since days… if I would trust the App.

  5. My app is also saying that my ECU battery is only 1%. The main battery has been in the bike for three days! It seems a lot of people report this issue. No fix from Niu yet?!?

  6. If your ECU battery is at 1%, leave your battery (fully charged) in the scooter overnight. The ECU battery will then charge. Full charge can take 24 hours (my own experience).

    Mine was “stuck” at 1%. I remove my battery every day and it very rarely sits in the scooter when I’m not using it. It seems the ECU battery doesn’t charge when riding the scooter, only when the scooter is parked and the battery is plugged in.

  7. Hi, due to self isolation, my NGT scooter had not been used for nearly 4 weeks, and is completely flat, plugging the charger in and the red light on the charger is flashing but the scooter won’t tell on. Will the battery ever charge again.

    1. Hey Andy,
      Was you battery connected to your scooter? If you store the battery outside the scooter (at room temperature), charged about 80% it normally lasts 1 month before going below 20%.
      I guess your’s been depleted by the ECU while inside the scooter? Let it charge for a while, maybe the battery controller need to re-condition it. If it’s still flat, I’d say it’s something you have to talk about with your dealer 🙁

  8. Hi,
    I have received my niu ngt yesterday. The battery was almost full but the ECU had 11% and today I had the same. Why is not charging the ECU? I can’t update the firmware and it is asking to do it … It needs 60%

    Regards

      1. It haven’t changed during the day. I have disconnected both batteries for more than 2 hours and the ECU reported the same: 11%. May it be caused for niu servers that didn’t work properly? Msybe it doesn’t refresh the data in the cloud. What do you think about?

        1. Well, indeed the app not working correctly could be “the last hope”… To be sure your dealer should measure the voltage at the ECU directly.

          1. Hi Axel, my dealer have told me that I must do 2 recharges more and wait for the ECU battery fill. They say that they watched that the battery was al 7% at first and before giving me the niu it had 11% of battery.
            Do you think that waiting more days will resolve the issue?

          2. Well, let’s summarize: Your scooter generally works, it drives, charges and everything else is OK. So waiting norther 2 or 3 days and keeping an eye on the ECU battery doesn’t cost you anything.
            You have 2 years warranty, so no need to hurry. Give it a try.

  9. Hello all,
    I have a NIU NSport and for the „Daily Use“ the User Manual says „To maximize the battery life, please keep the battery percentage within 20% to 80%“. I charge the battery at home (never directly to the scooter) so how can I control the battery level?
    How can I know that I am at 80%? Any tips?
    I could get an ANSMANN plug like mentioned in this post, but this will only turn the charger off when it reaches 100% battery, right? Or I am understanding wrong how this ANSMANN plug works..
    Thank you in advance

    1. AFAIK the newer batteries have a charging level bar. Does yours?
      No, the Ansmann Plug just cuts the power at a certain level of voltage. It’s originally meant for e.g. cutting you stereo as soon it goes into standby.
      In this post it’s used to prevent continous charging when the battery is already full.
      Whatever, don’t take that too serious, maybe at some point you get the experience that after X hours you’re at about 80%. It’s more important to avoid going below 10%

      1. Hi Axel,
        no, neither my battery or my charging cable have a “charging level bar” that’s exactly why I am confused about how to correctly control the charging.
        Would be better to get an Ansmann Plug and charge it to 100% every day BUT preventing the continous charging when the battery is already full OR would be better to get the experience and know after how many hours it is at 80%? I mean of course it would be better to keep it at 80% but is it so bad to charge up to 100%?
        Thank you

  10. Can you simply add a second battery to the N sport using the empty port without other modifications?

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