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We specialize in high-performance lithium-ion batteries, including 18650, 21700, and LiPo cells, designed for demanding industrial and commercial applications.with strict quality control, stable supply capability, and factory-direct pricing.

We’ve just finished another round of testing on our Ant Battery INR21700-MT50P.If you’re looking for a real 40A continuo...
12/06/2026

We’ve just finished another round of testing on our Ant Battery INR21700-MT50P.

If you’re looking for a real 40A continuous discharge 21700 cell, this is the kind of data that matters.

In this test, we didn’t just look at the discharge curves — we also checked the temperature rise across different current levels, because for high-rate cells, voltage and capacity are only part of the story.

From 1A all the way up to 50A, the MT50P shows stable output and clear performance differences under different loads.
At 40A continuous discharge, it still delivers solid performance. With an internal resistance of less than 4mΩ, this cell is built for high-current applications where power output and heat control both matter.

That makes it a strong option for demanding applications like UAVs, FPV drones, robotics, power tools, and other high-drain battery packs.

We believe battery testing should be open and transparent.
That’s why we’re sharing both the discharge voltage curves and the temperature rise curves — so you can see the performance more clearly for yourself.

Ant Battery INR21700-MT50P
Real high-rate performance, backed by real test data.

If you’d like the full test report or want to discuss your battery project, feel free to message us.

New power for demanding FPV & UAV applications ⚡Meet our new **ANT BATTERY INR21700-MT50P** — a high-power 21700 Li-ion ...
11/06/2026

New power for demanding FPV & UAV applications ⚡

Meet our new **ANT BATTERY INR21700-MT50P** — a high-power 21700 Li-ion cell built for strong thrust, fast response, and stable high-current output.

✅ 5000mAh capacity
✅ 40A continuous discharge
✅ Up to 50A with 75°C cutoff
✅ 175A / 3s max pulse
✅ ≤4mΩ low internal resistance
✅ Wide operating temp: -40°C to 80°C

Designed for FPV drones, UAV battery packs, robotics, power tools, and other high-rate applications where power delivery really matters.

Need specs, pricing, or samples for testing?
Send us a message and let’s talk about your battery project.

21700 5000mAh Cell Comparison at 30A DischargeWe tested several popular 21700 5000mAh cells under the same condition:30A...
11/06/2026

21700 5000mAh Cell Comparison at 30A Discharge

We tested several popular 21700 5000mAh cells under the same condition:
30A constant current discharge to 2.50V cut-off.

For high-current battery pack builders, the curve is more important than just the capacity number. A stable voltage platform, usable energy output, and low internal resistance all matter in real applications.

In this comparison, our ANT 50SP delivered:

✅ 4.94Ah capacity
✅ 16.91Wh energy
✅ 10:08 discharge time
✅ 3.665mΩ internal resistance
✅ Stable voltage performance under 30A load

Our ANT MT50P also showed strong high-current capability with lower internal resistance and consistent discharge performance.

These results help pack builders better evaluate cells for FPV drones, UAV battery packs, power tools, robotics, and other high-load applications.

We believe real test data is the best way to show battery performance.
If you are looking for reliable high-rate 21700 cells, feel free to contact us for samples or bulk pricing.

We really appreciate the technical feedback from the battery community.Recently, some customers pointed out an important...
04/06/2026

We really appreciate the technical feedback from the battery community.

Recently, some customers pointed out an important question about our INR21700-50SP 50A discharge test:

Voltage, capacity, energy, and runtime are useful data — but for a high-current 21700 cell, temperature data is just as important.

That is true.

At high current, internal resistance creates heat. Even with a low internal resistance around 4–4.5mΩ, a 50A discharge can generate about 10–11W of heat inside a single cell.

That is why we made this simple heat-loss analysis.

The result is clear:
as discharge current increases, heat loss rises sharply because internal resistance heating follows I²R.

For our INR21700-50SP cell, 50A discharge should be understood together with proper thermal conditions. In applications such as FPV drones or UAV packs, airflow during operation can help control cell temperature. But in enclosed packs or applications with limited cooling, the temperature may rise much faster.

50A continuous discharge requires proper airflow/cooling conditions. Without cooling, cell temperature may exceed safe operating limits.

So our position is simple:

50A discharge performance should be evaluated together with:
• Cell surface temperature
• Ambient temperature
• Cooling condition
• Test setup
• Voltage and current curve
• Repeat test results from multiple cells

We will continue improving our test reports and sharing more complete data, including temperature results under different cooling conditions.

Thank you again to everyone who gave honest technical feedback. This helps us make our product information more transparent, more useful, and safer for battery pack builders.

We just finished another discharge test for our INR21700-50SP high-current 21700 cell.This time, we tested it at 10A, 20...
03/06/2026

We just finished another discharge test for our INR21700-50SP high-current 21700 cell.

This time, we tested it at 10A, 20A, 30A, 40A, and 50A discharge currents, with a 2.50V cut-off voltage.

The chart shows how the voltage changes as capacity is released.
What we care about most is not just the capacity number, but how stable the voltage curve stays under higher current.

At 50A discharge, the cell still delivered 4.83Ah and 15.95Wh, which is a solid result for high-load applications.

This cell is designed for battery packs used in:

FPV drones
UAV systems
Robotics
Power tools
High-load battery applications

Main specs:

5000mAh capacity
50A continuous discharge
Up to 125A peak output
Internal resistance ≤4.5mΩ
1000+ cycle life

For customers building high-current battery packs, we can provide samples, test data, and bulk pricing.

Feel free to contact us if you are working on a battery pack project.

Real discharge test results for our high-current 21700 cell.We tested our INR21700-50SP cell under different discharge c...
03/06/2026

Real discharge test results for our high-current 21700 cell.

We tested our INR21700-50SP cell under different discharge currents: 10A, 20A, 30A, 40A, and 50A.
The chart shows discharge capacity on the X-axis and battery voltage on the Y-axis.

Even at 50A discharge, the cell still delivers strong capacity output with a clear and stable discharge curve, showing its capability for demanding high-current applications.

Designed for:
FPV drones / UAV battery packs / robotics / power tools / high-load battery systems

Key specs:
• 5000mAh capacity
• Up to 50A continuous discharge
• Up to 125A peak output
• Low internal resistance, ≤4.5mΩ
• 1000+ cycle life

Looking for reliable high-current cells for your battery pack project?
Contact us for samples and bulk pricing.

50A Constant Discharge Test Result We just completed a discharge test for our high-current INR21700-50SP cell.Test condi...
02/06/2026

50A Constant Discharge Test Result
We just completed a discharge test for our high-current INR21700-50SP cell.

Test condition: 50A constant current discharge
Cut-off voltage: 2.5V
Start voltage: 4.176V
End voltage: 2.492V
Measured capacity: 4.83Ah
Measured energy: 15.95Wh
Discharge time: about 5 minutes 54 seconds

Even under a high-current 50A load, the cell delivered stable output until the cut-off voltage. This result shows why a high-discharge 21700 cell is a practical choice for demanding applications such as FPV drones, UAV battery packs, robotics, power tools, and other high-load systems.

For customers building high-power battery packs, real test data matters more than words.

Looking for high-current 21700 cells?
Contact us for samples, test data, and bulk pricing.

29/05/2026

Low Internal Resistance. Stronger Power Output.

In this test, we are checking the internal resistance of our INR21700S-50SP high-performance lithium-ion cell. The selected batteries all have an internal resistance of less than 4 mΩ.

A lower internal resistance means:
✅ Better high-current discharge performance
✅ Less voltage drop under load
✅ Lower heat generation
✅ More stable output for demanding applications

For UAV battery packs, FPV drones, robotics, power tools, and other high-current systems, internal resistance is one of the key indicators of real battery performance.

Our INR21700S-50SP cell is designed for customers who need strong power, stable discharge, and reliable batch consistency.

Tested. Verified. Ready for B2B projects.

Contact us for samples, datasheets, and bulk pricing.

Power is not just about numbers — it’s about helping your products perform better in real applications.At ANT BATTERY, w...
26/05/2026

Power is not just about numbers — it’s about helping your products perform better in real applications.

At ANT BATTERY, we provide reliable battery solutions for UAVs, robotics, industrial devices, and custom power systems.

Our goal is simple: help your business achieve longer runtime, stronger power output, stable batch quality, and fewer supply-chain headaches.

Whether you need standard lithium cells, LiPo batteries, or customized battery packs, we support B2B projects with factory-direct service, flexible customization, and fast delivery.

Build better products with a battery partner you can rely on.

Contact us today for samples and bulk pricing.

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Shenzhen City
Shenzhen City

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