Alex Liang

Changhong Sunpower | Sales Director
Focusing on High-Rate Cylindrical Cells for:
Defense UAVs/Robotics
Industrial Power Tools
Smart Mobility

[Alex Liang @jun_70s]

@stats_feed 中国有3%？

[Alex Liang @jun_70s]

21700-50T 10C continues discharge, 20C at peak!!

🔋 When a split-second power drop means a crashed drone or a stalled tool, your battery can't be the weak link.

Introducing the INR21700-5000 50T from Jiangsu SunPower — engineered for high-rate applications where failure isn't an option.

⚡ What sets it apart:

• 5000mAh nominal capacity | 18Wh energy density
• 50A continuous discharge (with 75°C thermal protection)

• 100A pulse discharge (2s) for peak demand bursts

• ≤12mΩ AC impedance — minimal voltage sag under heavy load

• Exceptional rate capability: ≥85% relative capacity even at 40A discharge

• Proven durability: ≥80% capacity retention after 300 cycles (10A)

• Wide operating range: -20°C to 60°C ambient discharge

🎯 Ideal for:

✓ Industrial & FPV drones requiring sustained high current

✓ Professional power tools and garden equipment

✓ Any platform demanding "High Power, Endless Flight"

Built by Jiangsu SunPower. Trusted by engineers who can't afford to guess.

📩 DM us for datasheets, samples, and integration support.

#21700Battery #HighDischarge #LiIon #DroneTech #PowerTools #UAV #BatteryManufacturer #SunPower #EnergyDensity #B2B

[Alex Liang @jun_70s]

21700-5800!! -20°C~60°C 🚀 Striking the perfect balance between extended flight time, peak power output, and all-weather reliability is the ultimate challenge for European UAV engineering teams.

We have engineered a solution that delivers on all fronts without compromise. I am thrilled to introduce our latest high-rate cylindrical lithium-ion cell: the INR21700-5800 (58E), designed exclusively for high-performance drones, eVTOLs, and commercial UAVs by Changhong Sunpower.

Here is why the 58E is the optimal power architecture for your next-generation projects:
🔋 Maximum Endurance: Featuring a rated capacity of 5800mAh, the 58E provides a direct 15% increase in flight time compared to standard 21700-5000 cells. This ensures your drones stay airborne longer for critical commercial and industrial missions.
⚡️ Uncompromised Power & Thermal Stability: High capacity no longer means sacrificing discharge rates. The 58E handles a sustained 3C (17.4A) continuous discharge without temperature cut-off, and can reliably deliver up to 50A pulse discharge (for 2 seconds). As shown in our rigorous lab testing (refer to 58E 测试2.png), it maintains exceptional capacity (~5600mAh) and manageable thermals even under a continuous 15A load.
❄️ Exceptional Cold-Weather Performance: European winters demand robust power solutions. The 58E is built to thrive in harsh environments. Even at 0°C, it confidently supports up to a 30A discharge while delivering over 5000mAh . In extreme conditions of -20°C, it effortlessly handles a 10A discharge, retaining nearly 5000mAh of capacity .

At Changhong Sunpower, we are exclusively dedicated to pushing the boundaries of high-rate cylindrical lithium-ion battery technology.
If you are a Product Manager or CTO looking to optimize your drone's performance across all climates, or a Sourcing Director seeking a reliable, top-tier battery supply chain, let’s connect. Feel free to send me a direct message to discuss the full technical datasheet or to arrange samples for your lab testing.

#UAV #Drones #eVTOL #LithiumBattery #ChanghongSunpower #21700Battery #DroneTech #Engineering #SupplyChain #ProductDevelopment

[Alex Liang @jun_70s]

100 Million+ 21700 Cells Shipped | Powering the Global UAV Industry

Data speaks for itself. Recently, our shipments of 21700 cylindrical cells specifically for drone applications surpassed the 100 million mark. This milestone is a direct reflection of the reliability and consistency we deliver to the global UAV market.

At Changhong Sunpower, we focus strictly on the engineering limits of high-rate lithium-ion technology. To meet the diverse demands of aerial photography, mapping, and agricultural drones, we are highlighting two of our flagship 21700 cells:

🔋 INR21700-50T (High Power Focus): Designed for extreme power demands, featuring 5000mAh capacity, 50A continuous discharge, and 100A pulse discharge. Built to ensure robust output and sustained flight under heavy loads.
🔋 INR21700-55P (Capacity & Rate Balance): Offering a higher 5500mAh capacity with a 70A (2s) pulse discharge. As shown in our 20A constant current discharge curve, it maintains exceptional voltage stability and rigorous thermal control throughout the cycle, ensuring safe and long-lasting performance.

Reliable flight requires uncompromising power sources. We remain committed to advancing high-rate cylindrical battery technology for our partners worldwide.

Feel free to connect or message me directly to discuss technical specifications and battery solutions for your UAV projects.

#ChanghongSunpower #LithiumBattery #21700Battery #UAV #Drones #HighRateBattery #Engineering #TechInnovation

[Alex Liang @jun_70s]

@chukuang2018 @grok 查证

[Alex Liang @jun_70s]

Ever wondered how a world-leading high-rate cylindrical battery cell is born? From precise raw material mixing and high-speed winding to multi-stage electrolyte filling and intelligent automatic packaging—we’ve fully automated the entire production line to ensure micro-meter level precision and ultimate consistency in every cell.

Our fully automated gigafactory doesn't just speed up delivery; it guarantees the stable and rigorous performance that your premium power tools, drones, and electric vehicles require.

Take a quick tour of our facility through the video below! Let us know what you think in the comments. 👇

#ChanghongSunpower #LithiumBattery #SmartManufacturing #BatteryTechnology #IndustrialAutomation #EnergyStorage #CylindricalCell

https://t.co/zd9Aviui67

[Alex Liang @jun_70s]

@szslg 他们有签证吗？

[Alex Liang @jun_70s]

��� 300 Million Cells Sold & Counting! Why the INR21700-5000 (50SE) is the Ultimate Power Source for UAVs.

We are thrilled to share that our star cell, the Sainpower 50SE, has surpassed 300 million units in cumulative sales! Trusted globally, it has become the go-to choice for high-demand UAV/drone applications.

Here is what makes the 50SE a game-changer for your drone fleets:

🔹 Unmatched High-Rate Performance:

Continuous Discharge: 20A / 35A (with 75°C cut)

Instantaneous Power: Max Pulse up to 90A (2s)

Proven stability in 20A & 30A continuous rate tests—maintaining excellent capacity retention and predictable temperature curves.

🔹 Flexible PACK Configurations:Whether you need a lightweight 6S2P setup or a high-voltage, high-capacity 8S4P beast, 50SE supports versatile combinations to optimize your drone's flight time and payload capacity.
6S2P: 21.6V | 10Ah | 60A Continuous

6S4P / 8S4P: Up to 20Ah capacity and a massive 360A Pulse Discharge to handle aggressive maneuvers and heavy lifting.
With a nominal capacity of 5000mAh packed into a reliable 21700 form factor, we ensure your drones fly longer, safer, and further.
🤝 Power your next flight with 300 million cells of proven expertise. Contact us for custom UAV PACK solutions!

#UAV #DroneTechnology #LithiumBattery #21700 #Sainpower #50SE #EnergyStorage #DronePower

[Alex Liang @jun_70s]

🔋 Powering the Future of UAVs! 🚀21700-50SE Battery PACKs

Continuous high-rate discharge, ultra-low internal resistance, and exceptional thermal stability—our cylindrical lithium-ion cells are engineered for the most demanding drone missions. From industrial inspection to heavy-payload delivery, we ensure your drones fly longer, safer, and further.

Want to elevate your UAV performance? Let’s connect! 📩

#UAV #DroneTech #LithiumIon #LithiumBattery #HighRate #ChanghongSunpower #EnergyStorage #CylindricalBattery

[Alex Liang @jun_70s]

Changhong Sunpower, a global leader in high-rate cylindrical lithium batteries, offers 18650 & 21700 cells widely used in power tools, drones, e-bikes, and more. Powering the future of mobility and technology! ⚡📷 #ElectricMobility #TechInnovation #Ebike #Drones #PowerTools

[Alex Liang @jun_70s]

@yuyimei2 @grok 这是什么投票

[Alex Liang @jun_70s]

@usludurkizim 37

[Alex Liang @jun_70s]

Exactly! To fully unlock the potential of this motor, fast charging and high C-rate cells are absolute game-changers. Our 21700-50WE and 21700-50T cells are engineered precisely for this—supporting up to 2C charging and 10C continuous discharge to deliver maximum performance and value.

[Alex Liang @jun_70s]

Ranked #4 Globally | 2C Fast Charging | 10C Continuous Discharge | 20C Peak Pulse 21700-50T

When designing heavy-duty UAVs, advanced robotics, or high-speed e-mobility platforms, the core engineering dilemma is entirely predictable: How do you guarantee sustained high-current discharge without pushing thermals past the safe zone or blowing past your BOM targets?
At Changhong Sunpower, we back performance with global scale. According to the latest EVTank industry data, we are ranked 4th worldwide in global high-rate lithium-ion battery cell shipments.
To bridge the gap between extreme power demands and real-world commercial viability, we are introducing our newest high-power solution: the INR21700-50T.

Here is why this cell aligns perfectly with both strict engineering blueprints and rigorous procurement metrics:

The 2+2 Tab Advantage (Thermal vs. Cost Efficiency): Instead of full-tab configurations—which often introduce narrow manufacturing windows, yield fluctuations, and steep cost premiums—the 50T utilizes an advanced 2+2 tab structure. By optimizing the internal electron path, it slash DC resistance (DCR) significantly. This allows the cell to effortlessly handle 10C (50A) continuous and 20C (100A) instantaneous pulse discharge with minimal core temperature rise, eliminating sudden voltage drops during aggressive throttle pulls.

Uncompromised Quality Baseline: The 50T is built on the exact same manufacturing lines and high-yield maturity as our field-tested workhorse, the INR21700-50SE.

Proven Supply Chain Security: With over 300 million units of the high-capacity 50SE shipped globally, our mass-production footprint ensures flawless cell-to-cell consistency and highly reliable lead times.

Whether you are eliminating sudden voltage sags during critical flight mapping or ensuring pack-level safety under heavy-load robotic cycling, a robust power architecture shouldn't be a financial or manufacturing gamble.

Let's connect to review the engineering data or arrange benchmarking samples to let the cell performance speak for itself.

#LithiumIonBattery #21700Cell #HighRateBattery #DroneTechnology #EVEngineering #Robotics #BatteryMassProduction #ChanghongSunpower #CleanEnergy #B2BProcurement #NewProductLaunch

[Alex Liang @jun_70s]

Maximizing Flight Time Without Compromising Power? The secret is in the cell. 🚁🔋

For UAV and drone applications, the balance between weight, capacity, and discharge rate is everything. At Changhong Sunpower, we've engineered the INR21700-5000 (50SE) specifically to push these boundaries.

Here are the core specs driving our latest drone power solutions:
High Capacity: 5000mAh
Max Pulse Discharge: 90A (2s) – Crucial for rapid maneuvers and heavy-lift takeoffs!
Continuous Discharge: 20A / 35A (with 75°C cut-off)
Lightweight: ≤72g

By utilizing the 50SE, we are able to configure highly efficient packs tailored for demanding flight conditions. Some of our standard UAV pack configurations include:
6S2P: 21.6V | 10Ah | 180A Pulse (2s)
6S4P: 21.6V | 20Ah | 360A Pulse (2s)
8S4P: 28.8V | 20Ah | 360A Pulse (2s)

Whether your focus is on heavy-duty agricultural drones, high-speed FPVs, or defense UAVs, this cell delivers the sustained energy and reliable thermal management required to keep your fleet in the air longer and performing at its peak.

Drop a comment below or send me a DM for detailed spec sheets and sample testing. Let's power the future of flight together.
#ChanghongSunpower #UAV #Drones #FPV #LithiumBattery #21700Battery #DefenseTech #DroneTechnology #Engineering

[Alex Liang @jun_70s]

@allen27410505 @grok 事实核查

[Alex Liang @jun_70s]

21700-50SE | 5000mAh High-Rate Cylindrical Cell

Perfect for long-range FPV, heavy-lift UAVs & high-performance drone packs.

Key Specs (discharge curves & cell photos attached):
• Capacity: 5000mAh
• Voltage: 3.6V
• IR: ≤13.0 mΩ
• Max Continuous Discharge: 35A (~7C)
• Max Charge: 10A (2C)
• Weight: 72g
• Excellent high-temp & cycle performance

Higher energy density + stable high-rate output vs. previous-gen 21700 cells. Ideal drop-in upgrade for extended flight time and strong power delivery.

Jiangsu Sunpower (Knowing as Changhong Sunpower as well) — Tier-1 manufacturer, 600M cells/year capacity, TÜV lab certified, full PACK support.

DM me (Alex Liang) for full datasheet, samples or 2026 Catalog.

#UAV #FPV #DroneBattery #21700 #HighRateBattery #LongRangeFPV #DroneEngineering

[Alex Liang @jun_70s]

Hello X! 🌍 🔋

It’s time to bridge the gap between high-performance engineering and the power cells that drive it. As the Sales Director at Changhong Sunpower, I’m thrilled to join this platform to share insights, technical breakthroughs, and the future of high-rate cylindrical lithium batteries.

For over two decades, I've witnessed the evolution of energy. But what we are seeing today in UAVs, E-mobility, Power Tools, and Robotics is nothing short of a revolution. These industries don’t just need "batteries"—they need reliable, high-discharge powerhouses that can survive extreme conditions.

At Changhong Sunpower, we’ve dedicated ourselves to mastering the "High-Rate" niche. Why? Because we know that in your world:

For UAVs/Drones: Every gram and every Ampere counts. Our cells are designed for that critical high-G takeoff and sustained stability.

For E-bikes & Scooters: Safety isn't an option; it's the foundation. We balance high energy density with thermal stability to keep the "last mile" safe and fast.

For Power Tools: Instantaneous burst power is the difference between a tool that works and a tool that leads the market.

For Robotics: Precision requires consistent voltage discharge. Our 18650 and 21700 series are the "muscles" behind the automation.

We are pushing the envelope with our latest innovations, including the UltraDensity series (21700-5800mAh), proving that high capacity and high discharge can finally coexist without compromise.

I’m here to connect with R&D managers, C-level executives, and fellow innovators. Let’s talk about C-rates, thermal management, and how we can power your next-gen project.

The future is electric, but the "power" lies in the details. ⚡️

Follow me for deep dives into battery tech and global market trends. Let’s build the future, one cell at a time.

#ChanghongSunpower #LithiumBattery #HighRate #UAV #Drones #Robotics #EMobility #PowerTools #CleanEnergy #TechLeadership #21700 #BatteryTech #18650

[Alex Liang @jun_70s]

@Luxcm1 @DowloaderBot