Description
Maximize runtime like never before with the EVE 58E, a 21700 cell that pushes capacity to an extraordinary 5800mAh. This 4-pack delivers a steady 16.8A continuous discharge, making it the ultimate power source for solar energy storage, high-output LED flashlights, portable power banks, and light-to-medium cordless tools. The flat top design fits all standard 21700 spring-contact devices and simplifies spot-welding for custom battery packs. With excellent cycle life and EVE’s consistent quality, the 58E keeps your devices running longer between charges — perfect for off-grid systems, outdoor adventures, and everyday reliability.
Key Features
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5800mAh Ultra-High Capacity – Among the highest capacity 21700 cells available. Ideal for applications where maximum runtime between charges is the top priority.
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16.8A Continuous Discharge – Provides stable, reliable power for medium-drain devices. Handles fast-charge power banks, bright flashlight modes, and light power tools with ease.
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Flat Top Design – Universally compatible with 21700 spring-contact chargers, battery holders, and flashlights. The flat positive terminal is perfect for spot-welding nickel strips in DIY packs.
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Long Cycle Life – Retains ≥80% capacity after 500 charge/discharge cycles under recommended conditions, reducing long-term replacement costs.
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4-Pack Convenience – Ideal for building a compact solar battery bank, refreshing your flashlight collection, or assembling a high-capacity power bank.
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EVE A-Grade Quality – Rigorously tested for consistent performance, low self-discharge, and reliable operation trusted by professionals worldwide.
Parameters
Applications
Recommended For
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Solar Energy Storage & Street Lights: Low-current, long-duration operation. A single cell can power a bright LED fixture through the night and into overcast days.
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High-Output 21700 Flashlights: Medium to high modes (1–10A) benefit enormously from the 5800mAh capacity for exceptionally long illumination.
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Portable Power Banks: Build a compact 11,600mAh fast-charging power bank with just two cells. The 16.8A rating easily supports 65W USB-C PD output.
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Light-to-Medium Cordless Tools: Drills, impact drivers, and small electric screwdrivers when used in properly built battery packs with a BMS.
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Wireless Security Cameras & Smart Doorbells: Ultra-low standby consumption with sufficient peak current for motion-activated recording.
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Portable Medical Devices: Infusion pumps, patient monitors, and diagnostic equipment requiring uninterrupted power for extended periods.
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Camping Lanterns & Portable Fans: Keep cool and illuminated on multi-day outdoor adventures without worrying about recharging.
Not Recommended For
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Heavy-Duty Power Tools: Angle grinders, circular saws, and rotary hammers demand 20A+ continuous. Choose a high-drain cell like the EVE 40PL (60A) instead.
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High-Power Vaping (Sub-Ohm / Mechanical Mods): These require 20–35A. The 58E is a capacity cell, not a high-drain cell.
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Single-Cell E-Bike Applications: One cell cannot provide sufficient voltage or current. Always build a proper multi-cell pack with a BMS.
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Devices Requiring Button Tops: These are flat top cells. Use a magnetic spacer if needed, ensuring it does not cause short circuits.
FAQ
Q: Can I use this battery in my power tool?
A: Yes, but only for light-to-medium duty tools such as small drills and electric screwdrivers that draw less than 16A. Heavy-duty tools like angle grinders and circular saws require much higher currents and should use dedicated high-drain cells like the EVE 40PL.
Q: Is this battery suitable for e-bikes?
A: Only when used in a multi-cell parallel configuration. A single 58E cannot deliver enough current for an e-bike motor. You must build a proper series/parallel pack (e.g., 10S3P) with a BMS so that each cell’s load stays within the 16.8A limit.
Q: How does the 58E compare to the Samsung 50G or LG M58T?
A: All are ultra-high capacity 21700 cells. The 58E offers 5800mAh with a 16.8A continuous rating, giving it a slight capacity edge over the Samsung 50G (5000mAh/9.8A) and similar capacity to the LG M58T (5800mAh/12.5A) but with higher current capability than both, making it more versatile for medium-drain applications.
Q: Is this battery protected?
A: No, the EVE 58E is an unprotected flat top cell. Most single-cell devices have built-in protection, but for multi-cell packs, you must install an external BMS rated for at least 20A.
Q: How should I store these cells long-term?
A: Store at 3.6–3.7V (approximately 40–50% charge) in a cool, dry place using non-conductive battery cases. Avoid storing fully charged or fully discharged for extended periods.
