Why Panasonic 21700?
We use only Grade-A Panasonic cells. Unlike standard cells, Panasonic’s NMC chemistry provides:
- High Energy Density: 271 Wh/kg, meaning more power in a compact size
- Thermal Stability: Advanced heat dissipation keeps the pack cool under load
- Cycle Life: Rated for over 1000 cycles, retaining high capacity for years
Plug-and-Play for NIU M1/M1S
- Voltage: 48V (54.6V max charge)
- Capacity: 30Ah (Massive range extension)
- Configuration: 13S6P (Using 5.0Ah cells)
- Fitment: Direct replacement for NIU M1 & M1S. Uses original mounting points and connectors

Advanced Safety Features
Your safety is our priority. This pack includes a custom Yanyang Smart BMS (Battery Management System):
- Protection: Over-charge, Over-discharge, Short-circuit, and Temperature control
- Balance: Passive balancing to keep all cells uniform
- Output: High-rate discharge capable
Tech Specs

| Item | Specification |
| Cell Brand | Panasonic |
| Cell Model | 21700 |
| Nominal Voltage | 48V DC |
| Capacity | 30Ah |
| Energy | 1440 Wh |
| Dimensions Custom | Same as original |
| Charge Temp | 0°C to 45°C |
What’s in the Box?
- x1 48V 30Ah NIU M1/M1S Battery Pack
- x1 Charging Adapter (Optional: 5A Fast Charger)
Professional assembly with spot welding and high-temperature insulation.
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