CAT-E01DOM-03 · Battery & energy components
Lithium cells
Capacity at your discharge rate, not at C/5.
Cell specifications are quoted at conditions chosen to flatter them. Capacity at C/5 and capacity at 3C differ substantially, and cycle life quoted to 80% at 25 °C says little about behaviour at the temperatures your pack actually sees.
Validation record
EN-07 · 21700 cell, high-rate
01Deciding parameters
The figures that actually decide selection — and why.
Capacity
Ah
Only meaningful with the discharge rate stated.
Continuous discharge
C
With the temperature rise it produces.
Cycle life
cycles
To a stated end-of-life threshold and temperature.
Internal resistance
mΩ
Drives heat generation and voltage sag under load.
Chemistry
—
NMC, LFP, LTO — a safety and life decision, not only energy.
02Where it is used
Application changes the answer.
- UAV packs — energy density against discharge capability
- Mobile robotics — cycle life and fast-charge tolerance
- Stationary storage — cost per cycle over calendar life
- High-rate applications — resistance and thermal management
03Decision drivers
What the choice actually turns on.
- Capacity at your actual discharge rate and temperature
- Cycle life to your end-of-life threshold, not the vendor's
- Chemistry against the safety case you must defend
- Cell-to-cell consistency across a production lot
04What we hold
The intelligence behind this category.
Genuine manufacturer against rewrapped and regraded cells
Grade A against B stock, and how to tell from documentation
Capacity and resistance distribution across lots
Certification scope — UN 38.3, IEC 62133 — and what it excludes
05What to watch for
Where selection in this category turns.
Comparing capacity figures quoted at different discharge rates
Buying rewrapped cells believing them to be the original manufacturer's
Ignoring lot-to-lot variation in a pack that must balance
Treating a certificate as evidence without checking its scope
Beyond this page
SKU-level intelligence sits behind the requirement.
Validated supplier records, per-SKU parameter data, pricing bands, MOQ patterns, and lead-time history for lithium cells are released against a stated application — because a shortlist is only meaningful once the operating conditions are known.
06Coupled decisions in battery & energy components
Cell · BMS · pack construction · charger are one qualification. Selecting any one of these without the others is the most common source of rework in this domain.
Start with the application
Sourcing lithium cells?
Send the application and the operating conditions. We map the landscape, validate the claims, and return a shortlist with the reason each option is on it.