Verified Grade-A cell incoming inspection
Every incoming batch undergoes physical dimension verification, original factory QR laser code scanning, and shell insulation testing to prevent degraded or refurbished cells from entering production.
Cell sourcing & precision matching
Grade-A Lithium Cell Sourcing, Precision Sorting and Tab Customization
Direct access to verified Grade-A lithium cells with incoming QR barcode traceability, automated OCV and 1 kHz AC-IR consistency grading, tab laser-welding customization, and UN3480 compliant export packaging.
Sorting tolerance ΔV ≤ 3mV, ΔIR ≤ 0.3mΩ
Traceability 100% QR laser-code scanned
Tab processing Laser-welded studs & nickel tabs
Transport UN38.3 & UN3480 Class 9
Sourcing & Quality Capabilities
Confirm cell sourcing, precision sorting tolerances, and tab customization.
Automated OCV, AC-IR, and K-value sorting
Using automated multi-channel sorting stations, cells are screened for 1 kHz AC-IR, open-circuit voltage, and self-discharge rate (K-value) after controlled resting, ensuring minimal delta for pack stability.
Tab & terminal customization service
We provide precision laser-welded M4/M6 threaded studs, busbar connecting nuts, pure nickel solder tabs, and pre-soldered high-temperature silicone leads based on customer pack assembly drawings.
Comprehensive batch data sheet (COA) with shipment
Matched cell shipments include full batch testing records detailing individual cell voltages, internal resistance measurements, and capacity grading data for engineering transparency.
Certified UN3480 DG packaging for global transit
Cells are packed in custom flame-retardant honeycomb insulated cartons, compliant with UN38.3 test summaries, Class 9 lithium battery hazard labeling, and international air/sea freight requirements.
Delivery Workflow & RFQ Checklist
Cell Sourcing, Testing & Matching Delivery Workflow
From tier-1 incoming inspection to export DG dispatch, every step is governed by test data and traceable logs.
01
Incoming verification & QR code database logging
02
Ambient/high-temp rest & K-value self-discharge screening
03
1 kHz AC-IR and OCV precision sorting
04
Capacity grouping & 5-point consistency matching
05
Laser-welded studs/nuts or tab prototyping
06
Factory test inspection sheet (COA) & data archiving
07
UN3480 DG packaging with thermal insulation
08
Batch traceability code & documentation dispatch
Cell Sourcing & Matching RFQ Details to Confirm
Confirming these inputs helps quickly lock available production batches, sorting tolerances, and tab delivery options.
Request Cell Sourcing Quote Cell chemistry (LFP / NMC / Polymer)Form factor (Prismatic / Cylindrical / Pouch)Nominal capacity & discharge C-rateVoltage tolerance target (e.g. ΔV ≤ 3mV)AC-IR tolerance target (e.g. ΔIR ≤ 0.3mΩ)Terminal delivery option (Bare / Studs / Tabs)COA batch test report requirementDestination market & UN38.3 complianceSample batch quantityVolume rollout schedule
Factory Evidence
From QR barcode logging to UN3480 packaging — real photos.
Incoming Traceability
Every cell is QR-scanned to verify original factory data.
Incoming cells undergo handheld laser scanning to decode the top-cover laser QR code, cross-referencing serial numbers, production dates, and factory capacity grades into the traceability database.
Compliant Packaging
Custom insulated honeycomb partitions for safe transit.
Matched cells are packaged in high-strength cartons with flame-retardant honeycomb dividers and terminal insulator caps, eliminating risks of short-circuit or impact damage during transit.
Related product options
Grade-A Lithium Cell Sourcing, Precision Sorting and Tab Customization
18650Energy / power / high-rate
18650 Cylindrical Lithium Cell
18650 cylindrical lithium cell supply for OEM buyers who need mature sourcing, capacity and discharge class shortlists, IR matching, batch traceability, and flexible series-parallel building blocks.
Key specs
3.6V / 3.7V nominal / About 2.0-3.5Ah typical; 4.0Ah class by project / About 5-40A typical; higher current by project / 18650 Li-ion / NMC by project; LFP option review
21700Energy / power / high-rate
21700 Cylindrical Lithium Cell
21700 cylindrical lithium cell supply for OEM buyers who need higher cell capacity, fewer parallel groups, energy / power / high-rate class shortlists, IR matching, and batch traceability within the available equipment space.
Key specs
3.6V / 3.7V nominal / About 3.0-5.5Ah typical; 6.5Ah class by project / About 10-50A typical; higher current by project / 21700 Li-ion / NMC by project
32700LiFePO4
32700 LiFePO4 Cylindrical Cell
32700 LiFePO4 cylindrical cell supply for safer long-life OEM modules and packs that need 3.2V building blocks, matching, cycle-life planning, and batch traceability—not maximum Li-ion energy density.
Key specs
3.2V nominal / About 5.5-6.5Ah planning / About 1C-3C continuous class / 32700 LiFePO4
LFPLarge format
LFP High-Safety Large-Capacity Cell
Large-format LiFePO4 cell supply for buyers who need long cycle life, abuse-test review, safer module layouts, and large-capacity building blocks—not finished ESS packs, not high-energy Wh/kg screening, and not complete high-safety custom PACK engineering.
Key specs
3.2V nominal class / About 45Ah-300Ah+ planning bands / About 1C-5C by class / LiFePO4
25C-60CPolymer / LiPo
High-Rate Polymer Lithium Cell
High-discharge polymer / LiPo cell supply for pack builders who need 25C-60C class discharge, compact pouch formats, thermal-rise review, and current-focused OEM design.
Key specs
3.7V / 4.2V / 4.45V class / About 1.5Ah-22Ah planning bands / 25C-60C by class / High-rate LiPo / polymer
About 30C-60CPulse / cranking
Jump Starter High-Rate Lithium Cell
High-discharge lithium / polymer / LFP cell and compact OEM module route for automotive jump starters, motorcycle starters, and short-duration pulse equipment—not a retail clamp jump-starter storefront, not UAV flight packs, and not non-rechargeable primary lithium.
Key specs
Cell or pack configured / About 1.5Ah-4Ah class; larger LFP bands project-confirmed / About 30C-60C continuous class; pulse project-confirmed / High-rate Li-ion / polymer / LFP by project
270-350Wh/kg reviewHybrid review
High Energy Density Li-Ion Cell
High-specific-energy lithium cell options, including hybrid solid-liquid review, for long runtime, lightweight equipment, smart devices, and custom digital battery packs.
Key specs
About 3.55V-3.85V by band / About 20Ah-70Ah planning bands / Runtime optimized; band dependent / Li-ion / hybrid solid-liquid
Oval / pouch / prismaticCompact OEM
Small Pouch Lithium Cells
Oval, pouch, prismatic, and shaped lithium cell supply for compact smart devices, portable medical equipment, high-end digital products, and custom OEM packs.
Key specs
3.7V typical / model dependent / About 240mAh-4500mAh planning bands / About 3A-20A format dependent / Li-ion / polymer
Primary / non-rechargeableLong storage
Primary Lithium Battery Cell
Non-rechargeable lithium battery route for long storage life, rugged communication, and special field equipment—energy-class or power-class planning without extreme datasheet Wh/kg claims, and not a rechargeable jump-starter or high-safety PACK page.
Key specs
Chemistry dependent / Project specific / Energy or power type by band / Primary lithium / Li-CFx / Li-MnO2
Related sourcing paths
Continue by sourcing intent or product specification.
Lithium cell grading & sorting standards
Deep dive into 1 kHz AC-IR tolerances, OCV deltas, and K-value self-discharge math.
Open Lithium cell grading & sorting standards →Prismatic vs cylindrical vs pouch cells
Engineering trade-offs across volumetric density, cooling paths, and tab joining.
Open Prismatic vs cylindrical vs pouch cells →How to identify genuine Grade-A cells
Decode 24-character laser QR matrix, verify batch COA, and spot refurbished cells.
Open How to identify genuine Grade-A cells →Cylindrical Lithium Cells Category
Explore standard 18650, 21700, and 32700 cell formats, discharge bands, and pack planning.
Open Cylindrical Lithium Cells Category →Lithium Battery Cells Category
High-rate LiPo, large-format LFP, and high-energy density pouch platforms for OEM integration.
Open Lithium Battery Cells Category →Battery pack assembly service
Controlled assembly when cells, architecture, drawings, and BMS are already defined.
Open Battery pack assembly service →FAQ
Grade-A Lithium Cell Sourcing & Precision Matching Service | Staricell
How do you guarantee that cells are genuine Grade-A?
We source directly through audited tier-1 manufacturing channels. Every cell retains its original factory laser-etched QR code, which is scanned to verify serial number, production date, and factory grading data. Customers can independently cross-examine batch test certificates (COA) against physical laser codes.
Can you provide custom laser-welded terminal studs or tabs?
Yes. For cylindrical and prismatic cells, we provide precision laser-welding of threaded studs (M4/M6/M8), internal screw terminals, and multi-layer nickel tabs. This eliminates the risk of cell internal damage caused by customer manual soldering.
What are your standard cell matching tolerances for battery pack assembly?
Our standard matching criteria for series-parallel building blocks specify voltage delta ΔV ≤ 3mV and 1 kHz AC-IR delta ΔIR ≤ 0.3mΩ within the same batch. Tighter precision tolerances (such as ΔV ≤ 2mV) can be specified for sensitive aerospace or high-voltage applications.
What documentation is provided for international shipping?
All exported cells are accompanied by UN38.3 test summaries, Material Safety Data Sheets (MSDS), and packaging fall test reports. Shipments comply with IATA/IMDG UN3480 Dangerous Goods regulations using certified insulated honeycomb packaging.
Global delivery and project documentation
Cell, PACK, and export-document support for global OEM projects.
Staricell plans cell supply, pack engineering, BMS integration, test records, and shipment documents around each shipping country, application duty cycle, certification target, and production schedule.
Global OEM delivery
Cell supply, pack engineering, BMS integration, production testing, and export documents are planned around each buyer's shipping country, application, and volume schedule.
Certification and shipping files
Project files can cover UN38.3, MSDS / SDS, shipment labels, test summaries, and documentation paths for CE, IEC, UL, RoHS / REACH, and other requirements.
Application-duty review
Operating temperature, continuous / peak current, enclosure protection, connectors, chargers, communication interfaces, and field-service needs are reviewed before mass production.
Repeatable project records
Cell batch data, matching records, BMS settings, inspection results, and aging summaries can be aligned before sampling or pilot production.
Project quote
Grade-A Lithium Cell Sourcing, Precision Sorting and Tab Customization
B2B lithium cell sourcing, automated OCV/IR grading, and tab customization for pack builders and integrators. Tight tolerances (ΔV ≤ 3mV, ΔIR ≤ 0.3mΩ) and batch QR traceability.