Efest 18650 3000mAh 20A
Regular price:
product unavailable
Description
Efest 18650 3000mAh Battery – 20A CDR | 35A Pulse | IMR
Efest 18650 3000mAh (Metallic Purple) is a high-capacity IMR lithium-ion cell intended for regulated vaping devices. Manufacturer-declared continuous discharge rating (CDR) is 20A with a maximum pulse capability of 35A.
This is an unprotected cell and must be used only in regulated devices equipped with proper battery management and safety circuitry.
Extended Technical Specification Matrix – PRO Level
| Parameter | Specification | Technical Notes |
|---|---|---|
| Format | 18650 (18mm × 65mm) | Flat top configuration |
| Rated Capacity | 3000mAh | Manufacturer declared |
| Nominal Voltage | 3.7V | Standard Li-ion operating voltage |
| Maximum Charge Voltage | 4.20V ±0.05V | Do not exceed |
| Typical Cut-Off Voltage | 2.5V (reference value) | Charger-controlled safety limit |
| Continuous Discharge Rating | 20A | Primary safe operating parameter |
| Maximum Pulse Rating | 35A | Not for continuous load |
| Recommended Charge Current | 1.5A | For extended cycle life |
| Approximate Weight | 47–50g | Batch variance may apply |
| Chemistry | Li-Mn (IMR) | Improved thermal stability vs ICR |
| Protection | Unprotected Cell | Requires regulated device |
Safe Power Envelope Reference
At 20A continuous discharge rating, safe single-cell regulated operation typically aligns with approximately 60W when maintaining conservative safety headroom. Users should always prioritise continuous rating over pulse specifications.
Battery Safety Warning
Lithium-ion batteries can pose fire or thermal event risk if damaged, short-circuited, or improperly charged.
- Never carry loose batteries in pockets.
- Do not use cells with damaged wraps.
- Avoid contact with metal objects.
- Use dedicated 18650 battery chargers only.
- Discontinue use if overheating occurs during normal load.
Anti-Counterfeit Verification
Efest is a rewrap brand and counterfeit products are common in the market.
- Verify hologram authenticity.
- Scratch and check QR code.
- Compare cell weight (47–50g range).
- Inspect wrap printing quality and insulation ring.
End-of-Life Indicators
- Excessive heat under normal wattage
- Noticeable capacity drop
- Voltage sag increase
- Physical dents or damaged top cap
Recycling & Compliance – Ireland
Lithium-ion batteries must be recycled in accordance with Irish WEEE regulations. Do not dispose in household waste.
Locate official recycling points via WEEE Ireland: WEEE Ireland – Find a Battery Recycling Point
FAQ – Efest 18650 3000mAh 20A
No. 35A refers to pulse capability only. The continuous discharge rating (CDR) is 20A and should always be used as the primary safety reference. For conservative operation and safety headroom, regulated single-cell devices typically operate safely up to approximately 60W when using a 20A CDR battery. This cell is recommended only for regulated devices with built-in protection circuitry. Mechanical or bypass operation increases risk and requires advanced battery knowledge. Check the hologram label, scratch the verification panel, scan the QR code and confirm via the official Efest authentication system. Weight should typically fall within the 47–50g range. Replace the cell if you observe wrap damage, excessive heat during normal operation, significant capacity loss, or increased voltage sag.Is 35A a continuous rating?
What is the safe wattage limit for a single battery device?
Can this battery be used in mechanical mods?
How can I verify authenticity?
When should I replace the battery?
This product is intended for adults aged 18+ in Ireland.
Last updated: 19 February 2026 – Extended technical review completed.