Battery Information
1. Temperature Operating Range
The battery operates within different temperature ranges depending on the mode:
| Condition | Temperature Range |
|---|---|
| Charging | 32°F – 104°F (0°C – 40°C) |
| Operating (riding) | -4°F – 122°F (-20°C – 50°C) |
Important: Do not charge the battery in temperatures below 32°F (0°C) or above 104°F (40°C). This can permanently damage the battery cells.
2. LED Indicators
Both the charger and the battery itself have LED indicators that provide status information.
2.1 Charger LED
The DC charger has a single LED that indicates charging status:
| LED Status | Meaning |
|---|---|
| Red light ON (solid) | Battery is currently charging |
| Green light ON (solid) | Battery is not charging - either fully charged or not working |
| Flashing Red and Green* | Battery is charging slowly |
*The flashing Red/Green state only occurs on ES4 scooters. It indicates the controller is not sending a communication signal to the BMS. This is specific to the ES4 and is not a fault on other models.
2.2 Battery LED Indicators (ES Scooters)
The battery module itself has LEDs that indicate the battery's internal state:
| # | LED Status | Meaning | Usable? |
|---|---|---|---|
| 1 | Blue flashes every 1 sec | BMS standby, not over-discharged | Yes |
| 2 | Red flashes every 1 sec | BMS standby, battery over-discharged or short-circuited | No |
| 3 | Blue flashing quickly | BMS in normal operation, controller communication active | Yes |
| 4 | Red solid | Battery in short-circuit protection | No |
| 5 | Blue solid | Battery overcharged | Yes |
| 6 | Red flashes every 0.5 sec | Battery charging | Yes |
| 7 | Blue flashes every 0.5 sec | Battery discharging without controller communication | Yes |
| 8 | Red and Blue flashing simultaneously | Battery over-discharged, attempting to activate via charging | Yes (after charging) |
| 9 | Both LEDs off | Battery in sleep mode | Yes (plug in charger to wake) |
| 10 | Any other pattern | Faulty BMS | No - needs replacement |
3. Common Issues
Battery won't charge (Green LED on charger, scooter shows dead)
- Check the battery LED state (see table above)
- If Red flashing every 1 sec: battery is over-discharged. Connect the charger for an extended period (2+ hours) to attempt recovery
- If Red solid: short circuit protection active - the battery needs inspection
- See Battery Cannot Be Charged for the full troubleshooting SOP
Battery shows Error 50
Error 50 is a BMS fault code. See How to Solve Error 50 for the diagnostic procedure.
Opening the battery compartment
If the compartment is locked and the scooter won't power on, see Opening the Battery Compartment Cover.
4. Charging Best Practices
- Use only the official Ninebot/Segway charger
- Charge at room temperature (60°F - 77°F / 15°C - 25°C is ideal)
- Avoid leaving the battery at 0% for extended periods
- For storage, charge to 40-60% and switch to Transport Mode
- Recharge stored batteries every 1-2 months