Description
Overview
The Samsung 40T 21700 Battery is a high-performance lithium-ion rechargeable power cell, designed for demanding applications requiring both high capacity and power output. With a 4000mAh capacity and an impressive continuous discharge rate of 35A, this battery is an ideal choice for high-drain devices that require efficient energy delivery and extended runtime.
Key Features
Specifications
| Specification | Details |
|---|---|
| Brand | Samsung |
| Model | 40T |
| Battery Type | 21700 |
| Capacity | 4000mAh |
| Nominal Voltage | 3.6V |
| Full Charge Voltage | 4.2V |
| Discharge Cutoff Voltage | 2.5V |
| Continuous Discharge Rate (CDR) | 35A |
| Rechargeable | Yes |
| Protected | No (Unprotected cell – use with proper safety measures) |
| Cycle Life | ~300+ charge cycles |
| Diameter | 21.4mm |
| Length | 70.0mm |
| Weight | ~67g |
Applications
The Samsung 40T 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 usage. 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 Samsung 40T 21700 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.
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.