Molicel P42A 21700 Li-Ion Battery
If you've flown long range, you already know this cell. The P42A is the one everyone reaches for when they're building their own li-ion packs — and for good reason. 4200mAh capacity, 45A continuous discharge, and it handles the demands of a 6S long range build without breaking a sweat. At just 67g per cell, you're getting serious energy density without turning your quad into a brick.
Why buy individual cells? Because pre-built li-ion packs are expensive, and building your own is half the fun. A 6S pack with P42As will give you flight times that make your mates on LiPos jealous. Spot weld or solder them yourself — there are plenty of tutorials out there to walk you through it (Oscar Liang has a great step-by-step guide: oscarliang.com/solder-li-ion-battery-18650).
Quick specs:
- 4200mAh / 15.5Wh
- 45A continuous discharge
- 3.6V nominal / 4.2V max
- 21.4mm x 70.2mm, ~67g
- 500+ cycle life
Whether you're building a 4S cruiser or a 6S long range rig, these are the cells to do it with. Grab a 6-pack and build something that flies for 30+ minutes.
On sale now — priced to move while stock lasts.
Don't forget to grab a 6s balance plug & just use a lead off a dead battery
SPECIFICATIONS:
Bulk Pricing available from 50 - 99 $8.75 + shipping (no free shipping for bulk orders)
100 - 199 $8.25
200 - 399 $7.80
400+ $7.50
Email for Bulk Quote - Email Link
| Manufacturer: | Molicel |
| Model: | INR-21700-P42A (P42A) |
| Size: | 21700 |
| Style: | Flat Top |
| Protected: | NO, UNPROTECTED. This cell is unprotected and intended for use in protected battery packs only and NOT individually or as a standalone product. In order to operate safely it must have additional protection in the form of a PCB (protection circuit board) or BMS (battery management system), which is not included. |
| Nominal Capacity: | 4200mAh |
| Discharge Current: | 45A Maximum Continuous |
| Nominal Voltage: | 3.6V |
| Maximum Voltage: | 4.2V |
| Cutoff Voltage: | 2.5V |
| Approximate Dimensions: | 21.7mm x 70.2mm |
| Approximate Weight: | 67g |
| Origin: | Taiwan |
| Specification Datasheet: | Molicel INR21700P42A Datasheet |
