Power tools & garden equipment
High-rate 18650 and 21700 cells that take repeated peak draws and fast charge turnaround.
- Typical design point: 20–45 A per cell
- Fast charge matters more than absolute capacity
Cylindrical cells · Packs · Storage
Lithium-ion cells sourced on their datasheet, not on their marketing
We supply 18650, 21700 and prismatic lithium-ion cells from Samsung SDI, LG Energy Solution, Molicel and Panasonic to pack builders, integrators and distributors. Every parameter we publish is traceable to a manufacturer document, and where the manufacturer publishes one, you can download it here.
30Cell models on file
4Cell manufacturers
11Official datasheets
18650 · 21700Core formats
Product range
Start from the format, then pick the grade
Cylindrical formats cover most pack designs. Prismatic and pouch cells apply where a rectangular envelope gives better volumetric efficiency than round cells in a box.
18650-cells
18650 Cells
Cylindrical 18650 cells from 2,000 to 3,500 mAh, in energy grades and high-rate power grades.
View range → 21700-cells21700 Cells
21700 cells from 4,000 to 5,650 mAh, spanning 7 A energy grades and 45 to 60 A power grades.
View range → 18500-22700-cells18500 & 22700 Cells
18500 for compact devices; 22700 where a larger can is needed without moving to 21700 tooling.
View range → prismatic-cellsPrismatic Cells
Rectangular cells for packs where a flat envelope packs better than round cans.
View range → battery-packsBattery Packs
Assembled packs built on the cells above, with BMS, interconnects and housing per application.
View range → energy-storage-systemsEnergy Storage Systems
Residential and commercial storage built on the cell platform above, in rack or wall-mount enclosures.
View range → bms-accessoriesBMS & Accessories
Protection boards, nickel strip, holders and interconnect parts for building and servicing packs.
View range →Specification, not adjectives
Highest discharge capability in the current catalogue
Continuous discharge figures are quoted with the manufacturer's temperature cut-off condition, because a rating without its condition is not a rating you can design against.
| Model | Brand | Format | Capacity | Cont. discharge | Energy | Source |
|---|---|---|---|---|---|---|
| INR21700-P50B | Molicel | 21700 | 5,000 mAh | 60 A | 18.0 Wh | Datasheet |
| INR21700-P50S | Molicel | 21700 | 5,000 mAh | 60 A | 18.0 Wh | Datasheet |
| INR21700-P45B | Molicel | 21700 | 4,500 mAh | 45 A | 16.2 Wh | Datasheet |
| INR21700-P42A | Molicel | 21700 | 4,200 mAh | 45 A | 15.5 Wh | Datasheet |
| INR18650-P22S | Molicel | 18650 | 2,200 mAh | 36 A | 7.92 Wh | Datasheet |
| INR18650-P30S | Molicel | 18650 | 3,000 mAh | 36 A | 10.8 Wh | Datasheet |
| INR21700-40T | Samsung SDI | 21700 | 4,000 mAh | 35 A | — | Pending |
| INR18650-P28A | Molicel | 18650 | 2,800 mAh | 35 A | 10.3 Wh | Datasheet |
Brands we supply
Four cell manufacturers, one shipment
Mixing brands inside one pack is bad practice, but mixing brands across a product line is normal. We keep the documentation for each brand separate so your compliance file stays clean.
Where the cells go
Applications
The same 18650 can ends up in a medical cart, a power tool or a stationary storage rack. What changes is the grade — capacity-first or current-first — and the protection strategy around it.
E-mobility
E-bike, scooter and light traction packs where cycle life and thermal behaviour set the warranty terms.
- Typical design point: 10–25 A per cell
- Cycle life at realistic depth of discharge drives cost per kilometre
Energy storage
Residential, commercial and UPS storage built from energy-grade cells at low C-rates.
- Typical design point: 0.2 C–0.5 C
- Capacity and calendar life outweigh peak current
Drones & eVTOL
Ultra-high-power cells where both burst discharge and energy density bind at the same time.
- Typical design point: 45–60 A per cell
- Impedance and heating rate decide usable capacity
Medical & instrumentation
Steady-drain packs where documentation, traceability and batch consistency matter more than peak figures.
- Typical design point: under 10 A per cell
- IEC 62133 and UN38.3 documentation required per batch
Battery packs & BMS
Assembled packs, protection boards and interconnect parts specified around the cell you already chose.
- Welded interconnects, not soldered
- BMS configured to the cell's real voltage and temperature window
How we work
Procurement with the paperwork attached
Cell sourcing fails in the details — a mismatched batch, a missing transport document, a rating quoted without its temperature condition. This is the sequence we run to keep those out of your build.
Requirement
You give the load profile, envelope and target cycle life. We map that to candidate cells rather than starting from a part number.
Verification
Parameters are checked against the manufacturer data sheet. Where we hold the file, it is attached to the quote; where we do not, the values are marked pending.
Documentation
UN38.3 test summary, MSDS and transport classification supplied with shipment. Certificate numbers are quoted only from documents we hold.
Delivery
Cells ship in original manufacturer packaging with batch codes intact. We do not repack loose cells into unlabelled cartons.
Documentation
Download the manufacturer data sheet, not a reseller summary
A pack design decision made from a reseller's rounded numbers is a redesign waiting to happen. Where a manufacturer publishes a product data sheet, we host the original file and link it from the product page, so the numbers your engineers work from are the numbers the cell was built to.
What a usable data sheet gives you
CapacityTypical and minimum, not just typical
DischargeCurrent with its temperature cut-off
ChargeStandard and maximum, with end current
ImpedanceAC and DC, at a stated state of charge
EnvelopeDiameter, height and mass maxima
Technical notes
From the engineering desk
How to Read a Cycle-Life Claim for Lithium Cells
A cycle-life claim needs five conditions to mean anything. What 80% at 800 cycles leaves out, and how capacity retention differs…
Matching Cells Before Welding: What to Measure
Capacity, impedance and open-circuit voltage decide whether cells can share a string. How to measure them and how much spread is…
30 A or 36 A: Which P30B Discharge Rating Is Real
Molicel markets the INR18650-P30B at 36 A; its data sheet says 30 A continuous at an 80 °C cut-off. Which figure a pack design c…
Tell us the load profile, not the part number
Send the discharge curve, envelope and target cycle life. We will come back with candidate cells and the documentation behind each one.