Battery knowledge
Practical guidance on LiFePO4 batteries, 18650 and 21700 cells, DIY battery packs, safety and EU delivery planning.
Summary: EASA published a June 2026 revision of its Easy Access Rules for Unmanned Aircraft Systems. The update consolidates the rules and guidance around EU UAS operations and…
Read guide →For a European UAV battery-pack project, the correct 21700 cell is selected by matching the aircraft’s current requirement, usable energy target, pack configuration, operating environment and documentation needs—not…
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Choosing a battery cell is not simply a matter of selecting the highest capacity. For a European B2B project, the correct choice depends on the electrical design, available…
Read guide →280Ah and 314Ah LiFePO4 prismatic cells are commonly considered for stationary storage and battery-pack projects. The capacity difference does not make one option universally better: select the exact…
Read guide →18650 cells use an approximately 18 mm by 65 mm cylindrical format. For B2B battery-pack sourcing, select the exact manufacturer model and its published specification rather than treating…
Read guide →Prepared by: Sufeng New Energy technical team. Last reviewed: August 2026. Source basis: Model specifications are checked against linked product records and manufacturer specification sheets. Confirm the exact…
Read guide →Prepared by: Sufeng New Energy technical team. Last reviewed: August 2026. Source basis: Model specifications are checked against linked product records and manufacturer specification sheets. Confirm the exact…
Read guide →Evaluate a battery-cell supplier by model traceability, technical accuracy, document matching, sample consistency, packaging, delivery transparency and claim handling. A professional supplier should distinguish verified
Read guide →E-bikes, power tools and energy-storage systems place different demands on cells. E-bikes balance range and power, tools need high current and thermal control, and storage often prioritizes energy,…
Read guide →EU lithium-battery delivery depends on product classification, quantity, packaging, carrier acceptance, origin and destination. Confirm the exact model, applicable transport documents, dangerous-goods route, Incoterm and
Read guide →Original battery-cell verification requires more than checking wrapper color or a QR code. Confirm the supplier, exact model, production lot, markings, dimensions, weight, open-circuit voltage, internal-resistance method
Read guide →EVE 50E and 58E should be treated as separate 21700 models. The 58E name suggests higher nominal capacity, but buyers still need the current official datasheet, discharge conditions,…
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