21700 Lithium-Ion Battery Cells
Browse authentic 21700 cells for high-current packs, long-runtime projects, e-bikes, RC aircraft, tools, energy storage, and custom battery builds. The current DIY500AMP selection includes models from EVE, Ampace, Reliance, Tenpower, Samsung, BAK, Amprius, LinkData, and LG.
Choose by application: power cells prioritize current delivery, energy cells prioritize capacity, and hybrid designs balance both. Confirm rated capacity, manufacturer maximum continuous current, charge limits, temperature conditions, and parallel current sharing before building.
Searching for Molicel? DIY500AMP does not currently sell Molicel cells, but our 21700 Molicel alternatives collection highlights available options selected by comparable build goals.
For deeper comparisons, manufacturer data sheets, and independent testing performed within published limits, visit BatteryRealData.com.
Safety: These are unprotected lithium-ion cells intended for properly designed battery packs. Use a correctly rated BMS, insulation, fusing, suitable conductors, current sharing, and thermal management. Never exceed the manufacturer data-sheet limits.
Ships from Florida with practical support for serious battery builders.
