Molicel INR-21700-P42A 4200mAh Li-Ion Cell
SKU MOLICEL-P42A-21700
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Product details
The Molicel INR-21700-P42A is a single 21700 lithium-ion cell built for high-drain custom packs, including FPV Li-ion builds and other projects that need both strong capacity and real continuous current. It carries a genuine 4200mAh typical capacity (4000mAh minimum) on a 3.6V nominal cell.
Key features
- 45A continuous discharge rating supports high-drain packs without excessive voltage sag.
- Standard 4.2A charge current gives a full charge in around 1.5 hours.
- 230Wh/kg gravimetric and 615Wh/L volumetric energy density are strong for a cell of this current rating.
- Low internal impedance (10mΩ AC, 16mΩ DC) keeps the cell running cooler under sustained load.
- 21700 cylindrical format fits holders, sleds and custom packs built around this larger cell size rather than 18650.
Specifications
- Cell format: 21700
- Cell count: 1S
- Capacity: 4200 mAh typical (4000 mAh minimum)
- Nominal voltage: 3.6V
- Charge / cut-off voltage: 4.2V / 2.5V
- Continuous discharge: 45A
- Standard charge current: 4.2A
- Dimensions: approx. 21.4 x 70 mm
- Terminal: Flat top (unprotected)
- Weight: 70g (max)
Suited to builders assembling their own 1S or multi-cell Li-ion packs who need genuine high-current capability rather than a repackaged low-drain cell; it is a bare cell, not a drop-in LiPo replacement.
| Cell Count | 1S |
|---|---|
| Chemistry | Li-ion |
| Capacity | 4200 mAh |
| C-Rating | 11 C |
| Cell Format | 21700 |
| Made in India | No |
| Brand | Molicel |
| Weight | 70 g |
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