Everything You Need to Know About the 21700 Battery
External heating has an impact on the discharging properties of 21700 Lithium-ion batteries (LIBs). The rates of heating can reach up to 38 °C/min, and the effectiveness of heat
21700 protected batteries have an electronic circuit. The circuit is embedded in the cell packaging (battery casing) that protects the cell from “over charge”, heat or “over discharge”, over current and short circuit. A 21700 protected battery is safer than an 21700 unprotected battery (less likely to overheat, burst or start on fire).
Max Discharge Current: 21700 batteries can typically handle a discharge current of 10A to 30A, making them suitable for high-power applications.
Several factors influence the safe discharge rate of 18650 and 21700 battery packs: Cell Chemistry: Different lithium-ion chemistries (e.g., NMC, LFP, NCA) have varying discharge capabilities. Internal Resistance: Lower internal resistance allows for higher discharge rates with less heat generation.
Discharge Rates With discharge rates often exceeding 10A (and up to 35A for high-performance variants), 21700 cells are suitable for demanding applications such as drones, high-performance flashlights, and vaping devices.
PDF version includes complete article with source references. Suitable for printing and offline reading.
Download detailed product specifications, case studies, and technical data for our off-grid PV containers and mobile energy storage solutions.
15 Innovation Drive
Johannesburg 2196, South Africa
+27 87 702 3126
Monday - Friday: 7:30 AM - 5:30 PM SAST