Product appearance shown for model identification.
LG ENERGY SOLUTION · 21700 Series
LG 21700-H51
21700 cell for electric-motorcycle pack evaluation
Promotion data; dimensional, weight and cycle targets marked TBD remain provisional. Current limits depend on temperature.
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MODEL OVERVIEW
LG 21700-H51 — Selection & Sourcing
LG INR21700 H51 is described in the manufacturer promotion specification for electric-motorcycle applications. Confirm the offered revision before pack qualification.
For a 21700 battery pack, share the series and parallel arrangement, continuous load and charging schedule. Check cell temperatures under the repeated duty cycle as well as brief peaks. This gives your engineering team a useful basis for comparing models and setting the sample qualification plan.
BK Energy can discuss LG 21700-H51 wholesale sourcing with your purchasing team. Include the sample quantity, expected production volume, delivery destination and documents needed for supplier approval so the quotation addresses both technical and commercial requirements.
TECHNICAL REFERENCE
Specifications & Operating Conditions
Read each value with its test conditions. Confirm the applicable document revision before design approval.
| Energy / nominal voltage | 18.2Wh nominal; 17.6Wh minimum; 3.64V |
|---|---|
| Standard charge / discharge | 2.5A to 4.2V, 50mA termination; 1A discharge to 2.5V |
| Maximum discharge by ambient | −20–10°C: 7.5A; 10–25°C: 25A; 25–45°C: 20A; 45–55°C: 7.5A |
| Charge review | Use the complete temperature-dependent charge table; do not apply a single current across temperatures |
| Dimensions / weight | ≤21.27 × 70.60mm; ≤70.5g (TBD) |
| AC / DC resistance | 12 ± 6mΩ / 20 ± 6mΩ; see test conditions in linked specification |
| Cycle target | 1000 cycles, ≥80% initial energy (TBD); 5A charge to 4.2V / 100mA cutoff, 15A discharge to 3.0V, 25 ± 2°C |
| Thermal protection | Derate and stop before surface-temperature limits; after thermal cutoff, resume discharge only below 50°C. See full specification. |
Specification basis
LG INR21700 H51 promotion specification, Rev. 3, 2024-10-17. Values are preliminary; consult the complete document for thermal cutoffs and test conditions.
Manufacturer H51 promotion specification (distributor-hosted) ↗
APPLICATION REVIEW
What to Check for Your Pack
For these project types, compare usable energy at the working load, cell-holder tolerances, busbar design and the temperature-dependent operating limits.
- Energy and load: usable energy, continuous current, peak duration and charging opportunities.
- Mechanical and thermal fit: the exact drawing, connections, enclosure temperature and cooling arrangement.
- Qualification: a test plan based on the finished equipment, including its protection settings and required approvals.
PROCUREMENT DOCUMENTS
Datasheet, Traceability & Certificates
Ask for the specification and drawing that match the offered lot. If your project needs a UN 38.3 test summary, SDS or a particular cell certificate, include that requirement in the enquiry.
BUYER QUESTIONS
Before You Order
Is this cell suitable for my application?
For these project types, compare usable energy at the working load, cell-holder tolerances, busbar design and the temperature-dependent operating limits. Application names on this page are evaluation starting points, not a claim that an OEM has approved this exact cell.
Can I get the LG 21700-H51 datasheet?
Yes—send the complete model code and your project requirements. We will review the matching specification and available documentation with you. Any preliminary values should be confirmed before production approval.
What are the wholesale price, MOQ and lead time?
These are quoted for the requested model, quantity, available lot and destination. Send sample demand and expected production volume so the offer can address your schedule.
Which documents should accompany the order?
Ask for the applicable specification revision, lot identification, SDS and UN 38.3 test summary, plus any model-specific certificates required for your market. Cell documents do not replace finished-pack or equipment approval.
Compare Other 21700 Series
Compare exact specifications; a similar format does not mean the cells are interchangeable.
