Description
Overview
The Efest 3000mAh 20A 18650 Battery is a high-capacity rechargeable lithium-ion power cell designed for high-drain applications. Featuring a 3000mAh capacity and a 20A continuous discharge rate, this battery provides long-lasting and stable performance, making it a reliable choice for power-hungry devices.
Key Features
Specifications
| Specification | Details |
|---|---|
| Brand | Efest |
| Model | 3000mAh 20A |
| Battery Type | 18650 |
| Capacity | 3000mAh |
| Nominal Voltage | 3.7V |
| Full Charge Voltage | 4.2V |
| Discharge Cutoff Voltage | 2.5V |
| Continuous Discharge Rate (CDR) | 20A |
| Rechargeable | Yes |
| Protected | No (Unprotected cell – use with proper safety measures) |
| Cycle Life | ~300+ charge cycles |
| Diameter | 18.3mm |
| Length | 65.0mm |
| Weight | ~48g |
Applications
The Efest 3000mAh 20A is widely used in high-drain electronic devices, including:
Safety Guidelines & Warnings
IMPORTANT SAFETY NOTICE ️
Lithium-ion batteries require proper handling and knowledge to ensure safe operation. Failure to follow safety guidelines may result in fire, explosion, serious injury, or property damage.
General Safety Guidelines
Prohibited Uses & Handling
User Responsibility & Risk Acknowledgment
- The user assumes full responsibility for proper handling, charging, and storage.
- Misuse or mishandling may result in serious injury or damage.
- No guarantee of compatibility with any specific device is provided.
- Usage of this battery is at your own risk.
By purchasing and using the Efest 3000mAh 20A 18650 Battery, you acknowledge and agree to follow all safety guidelines. Failure to comply may result in hazardous consequences. Prior knowledge of lithium-ion battery safety is required before purchase.
Stay safe and handle responsibly.
WARNING:
- DO NOT USE WITH E-CIGARETTE, VAPORIZER, OR SIMILAR DEVICE
- MISUSING OR MISHANDLING LITHIUM ION BATTERIES CAN POSE A SERIOUS RISK OF PERSONAL INJURY, PROPERTY DAMAGE, OR DEATH
- BATTERIES MAY EXPLODE, BURN, OR CAUSE A FIRE IF MISUSED OR MISHANDLED
- ONLY USE WITH PROPER CIRCUITRY IN A PROTECTED BATTERY PACK
- ONLY USE WITHIN MANUFACTURER LISTED SPECIFICATIONS
- DO NOT STORE LOOSE BATTERY IN A POCKET, PURSE ETC. - ALWAYS USE A PROTECTIVE CASE OR BOX
- KEEP AWAY from metal objects to prevent short circuiting
- DO NOT short circuit
- DO NOT use if wrapper or insulator is damaged or torn
- DO NOT use if damaged in any way
- DO NOT overcharge or over-discharge
- DO NOT modify, disassemble, puncture, cut, crush, or incinerate
- DO NOT expose to liquids or high temperatures
- DO NOT solder, spot weld only
- User must be familiar with handling lithium ion batteries before purchase
- Usage of batteries is AT YOUR OWN RISK
- ALWAYS charge in or on a fire-proof surface and never leave charging batteries unattended
- RESELLERS MUST FORWARD ALL WARNINGS TO ALL CUSTOMERS FOR THEIR REFERENCE AND SAFETY
Frequently Asked Questions
Yes. All cells we sell are guaranteed authentic, Grade A, and brand new. Not reclaimed, used, or rewrapped. We also prioritize fresh manufacturing dates, so you’re not receiving cells that have been sitting around for years.
Some sellers offer Grade B cells that can have inconsistent voltage, higher internal resistance, reduced performance, or other issues. You will never receive a Grade B, reclaimed, or used cell from us.
These are sold as bare cells (no welded tabs or leads) unless the listing explicitly states otherwise.
To make pack building easier, our cells are sorted and batched for matching internal resistance, voltage, and date code, so they arrive ready to be assembled into a pack.
U.S. orders ship from Atlanta, Georgia.
For international orders outside the USA, we may ship from a different fulfillment hub depending on the product’s manufacturing location, to ensure faster and more efficient delivery.
Shipments within the USA, delivery in 1–3 days (up to 5). Expedited shipping available. International shipping varies—contact us to inquire.