Efest 21700 4000mAh 30A Battery
Key Features
- 4000mAh Capacity: Provides long-lasting power between charges for high-demand devices.
- 30A High-Drain Output: Delivers strong, steady current for demanding applications.
- Flat-Top Lithium-Ion Cell: Designed for devices that require flat-top battery contacts.
- IMR Chemistry: Engineered for stable and consistent performance under load.
- Rechargeable & Compact: 21700 size offers a balance of capacity, power, and portability.
Overview
The Efest 21700 4000mAh rechargeable lithium-ion battery combines high capacity with strong discharge performance in a compact 21700 format. With a 30A maximum continuous discharge rating and flat-top, unprotected design, this cell is intended for devices engineered to handle high-drain lithium-ion power. It’s a reliable option for users who need sustained energy and dependable output.
Applications / Uses
- 21700-compatible flashlights
- Portable power tools and equipment
- DIY electronics and custom battery assemblies
- Bench testing and evaluation projects
- Replacement batteries for compatible lithium-ion devices
Specifications
| Manufacturer: | Efest |
| Size: | 21700 |
| Nominal Capacity: | 4000mAh |
| Nominal Voltage: | 3.7V |
| Maximum Voltage: | 4.2V |
| Discharge: | 30A Maximum Continuous |
| Positive: | Flat |
| Protected: | No |
| Rechargeable: | Yes |
| Dimensions: | 21.3mm x 70.2mm |
| Weight: | 66.37g |
Original: $9.99
-65%$9.99
$3.50More Images
Efest 21700 4000mAh 30A Battery
Key Features
- 4000mAh Capacity: Provides long-lasting power between charges for high-demand devices.
- 30A High-Drain Output: Delivers strong, steady current for demanding applications.
- Flat-Top Lithium-Ion Cell: Designed for devices that require flat-top battery contacts.
- IMR Chemistry: Engineered for stable and consistent performance under load.
- Rechargeable & Compact: 21700 size offers a balance of capacity, power, and portability.
Overview
The Efest 21700 4000mAh rechargeable lithium-ion battery combines high capacity with strong discharge performance in a compact 21700 format. With a 30A maximum continuous discharge rating and flat-top, unprotected design, this cell is intended for devices engineered to handle high-drain lithium-ion power. It’s a reliable option for users who need sustained energy and dependable output.
Applications / Uses
- 21700-compatible flashlights
- Portable power tools and equipment
- DIY electronics and custom battery assemblies
- Bench testing and evaluation projects
- Replacement batteries for compatible lithium-ion devices
Specifications
| Manufacturer: | Efest |
| Size: | 21700 |
| Nominal Capacity: | 4000mAh |
| Nominal Voltage: | 3.7V |
| Maximum Voltage: | 4.2V |
| Discharge: | 30A Maximum Continuous |
| Positive: | Flat |
| Protected: | No |
| Rechargeable: | Yes |
| Dimensions: | 21.3mm x 70.2mm |
| Weight: | 66.37g |
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Key Features
- 4000mAh Capacity: Provides long-lasting power between charges for high-demand devices.
- 30A High-Drain Output: Delivers strong, steady current for demanding applications.
- Flat-Top Lithium-Ion Cell: Designed for devices that require flat-top battery contacts.
- IMR Chemistry: Engineered for stable and consistent performance under load.
- Rechargeable & Compact: 21700 size offers a balance of capacity, power, and portability.
Overview
The Efest 21700 4000mAh rechargeable lithium-ion battery combines high capacity with strong discharge performance in a compact 21700 format. With a 30A maximum continuous discharge rating and flat-top, unprotected design, this cell is intended for devices engineered to handle high-drain lithium-ion power. It’s a reliable option for users who need sustained energy and dependable output.
Applications / Uses
- 21700-compatible flashlights
- Portable power tools and equipment
- DIY electronics and custom battery assemblies
- Bench testing and evaluation projects
- Replacement batteries for compatible lithium-ion devices
Specifications
| Manufacturer: | Efest |
| Size: | 21700 |
| Nominal Capacity: | 4000mAh |
| Nominal Voltage: | 3.7V |
| Maximum Voltage: | 4.2V |
| Discharge: | 30A Maximum Continuous |
| Positive: | Flat |
| Protected: | No |
| Rechargeable: | Yes |
| Dimensions: | 21.3mm x 70.2mm |
| Weight: | 66.37g |
