— 21700 High Energy
STEADY RANGE, PREDICTABLE LIFE
5500mAh tuned for a 2C continuous load. A 21700 for packs that run at a measured pace, all day.
— Where it works
WHAT THIS CELL IS GOOD FOR
Each scene states the case for this cell and, just as plainly, the case against it. Knowing which cell not to buy is the point.
Commuter e-bikes and gentle drives
A 2C continuous rating matches how a commuter motor actually behaves — modest, sustained current rather than spikes. E-bike pack engineering is driven by exactly this kind of duty profile.
Where it does not fit
400 cycles is the shortest cycle life in the range. If the pack is charged twice a day, budget for replacement sooner than the 60D would need.
Fixed-load equipment
When the current draw is known and steady, a cell rated for that figure is a better fit than one bought for pulse headroom it will never use.
Where it does not fit
Not for motor inrush. There is no high-C reserve here — a stall or hard start will sag the pack. Use the 55P or 40T instead.
Weight-sensitive packs
270 Wh/kg keeps pack weight down without stepping up to the 60D, which matters on anything that has to be carried.
Where it does not fit
The 0.5C charge rate is gentle by design. Do not add fast charging on the assumption that a higher-capacity cell tolerates it.
— The numbers that matter
INR21700-55E · 5500mAh
Capacity
Energy stored per cell. Multiplied across the pack, this is your run time.
Standard discharge
The current this cell can hold continuously. Match it to your load before anything else.
Pulse discharge
A short burst — motor start, takeoff, inrush. Not a sustained figure.
Cycle life
Charge/discharge cycles before capacity falls to the end-of-life threshold, at gentle duty.
Remaining ratings
- Nominal voltage
- 3.6V
- Max charge
- 4.2V
- Charge current
- 2.75A (0.5C)
- Energy
- 19.8Wh
- Energy density
- 270 Wh/kg
- Weight
- ≤73.2 g
Figures reflect NCM 21700 · High Energy manufacturer specifications. Duty cycle, thermal management, and pack design all move the real numbers — confirm your intended load with Monachi before committing to a target.
— Compare the family
CLOSE CALLS IN 21700 HIGH ENERGY
— Order this cell
INR21700-55E
5500mAh · NCM 21700 · High Energy
Add this cell to your cart, or send the selection straight to our sales team on Telegram. Prices shown are indicative starting prices — final B2B pricing, availability, and terms are confirmed by Monachi.
Indicative pricing (USD)
Not a final offer. Freight, duties, and payment terms are quoted per order — confirm with Monachi before you plan against these numbers.
3-month warranty on every cell. Defective cells are replaced.