3.8V 40Ah 380Wh/kg High Energy Density Drone Battery Cell AS-A588J9
3.8V 40Ah ultra-high energy density drone battery cell (AS-A588J9) delivering a class-leading 380Wh/kg at just 400g. Energy-optimized chemistry with 2C continuous discharge (80A) for maximum endurance in steady-cruise fixed-wing platforms. Features ≤2mΩ internal resistance and 300-cycle life. Ideal for long-range survey, persistent surveillance, solar-assisted, and maritime patrol fixed-wing UAVs. OEM/ODM custom pack assembly available.
Description
Model AS-A588J9 – 3.8V 40Ah 380Wh/kg High Energy Density Drone Battery Cell
Voltage: 3.8V | Capacity: 40Ah (152Wh) | Energy Density: 380Wh/kg | Size: 189 x 88 x 10.5mm | Weight: 400g
The AS-A588J9 is a 3.8V 40Ah ultra-high energy density drone battery cell delivering a class-leading 380Wh/kg at just 400g. This energy-optimized high-voltage lithium polymer pouch cell is engineered for long-endurance fixed-wing UAV platforms where maximum flight time is the primary design goal.
With an ultra-low internal resistance of ≤2mΩ, the AS-A588J9 supports 2C continuous discharge (80A) and 3C peak discharge (120A) — optimized for efficient steady-cruise flight profiles rather than high-maneuverability operations. The wide 25mm tabs ensure efficient current transfer with minimal heat buildup. Rated for 300 cycles and operating across -20°C to +60°C discharge, this cell is ideal for building custom high-voltage drone packs for long-range survey, persistent surveillance, solar-assisted, and maritime patrol fixed-wing platforms.
Technical Specifications
| Battery Type | Ultra-High Energy Density High-Voltage Lithium Polymer Pouch Cell (LiPo) |
| Part Number | AS-A588J9 |
| Nominal Voltage | 3.8V (High-Voltage) |
| Capacity | 40Ah (152Wh) |
| Gravimetric Energy Density | 380 Wh/kg |
| Dimensions (L x W x T) | 189mm x 88mm x 10.5mm (max.) |
| Tab Width | 25mm |
| Cell Weight | 400g |
| Internal Resistance | ≤2mΩ |
| Max Continuous Charge Current | 1C (40A) |
| Max Continuous Discharge Current | 2C (80A) — Energy-Optimized |
| Max Instantaneous Discharge | 3C (120A) |
| Cycle Life | 300 cycles |
| Operating Temperature | Charge: 0°C ~ +45°C | Discharge: -20°C ~ +60°C |
| Configuration | Single Cell (1S) — Build Custom High-Voltage Drone Packs |
| Primary Applications | Long-Range Fixed-Wing | Persistent Surveillance | Solar UAV | Maritime Patrol | Atmospheric Research |
Why 380Wh/kg Matters for Long-Endurance Drones
Standard drone LiPo cells typically deliver 200~250 Wh/kg. The AS-A588J9 achieves 380 Wh/kg — up to 90% more energy per gram. For a 12S 40Ah drone pack, this means approximately 3.5kg less weight compared to conventional cells, translating directly to dramatically longer flight time or increased payload capacity.
| Standard Drone LiPo Cell | ~220 Wh/kg |
| High-Performance Drone LiPo | ~250 Wh/kg |
| AS-B588J9 High Density | 354 Wh/kg |
| AS-A588J9 Ultra-High Density (3.8V HV) | 380 Wh/kg (+52%~90%) |
Core Advantages
- ✔
Class-Leading 380Wh/kg: At 380Wh/kg, the AS-A588J9 delivers up to 90% more energy per gram than standard drone LiPo cells — the highest energy density in our product lineup, maximizing endurance for long-range fixed-wing missions. - ✔
Energy-Optimized 2C Discharge: The 2C continuous (80A) and 3C peak (120A) discharge profile is purpose-built for steady-cruise fixed-wing flight — where efficiency and endurance matter more than high maneuverability. - ✔
High-Voltage 3.8V Platform: Nominal 3.8V (vs. standard 3.7V) means higher pack voltage at the same series count — a 12S pack delivers 45.6V nominal, boosting motor efficiency and cruise speed. - ✔
Ultra-Low Resistance: ≤2mΩ internal resistance minimizes voltage sag and heat generation during discharge, improving overall energy efficiency and pack lifespan. - ✔
Wide Temperature Operation: Discharges reliably from -20°C to +60°C — suitable for high-altitude, cold-climate, and long-endurance operations where standard cells suffer voltage sag. -
Perfect For Applications
photogrammetry, land surveying, 3D modeling, aerial photography.
power line inspection, pipeline monitoring, infrastructure, bridge inspection.
package delivery, last-mile logistics, medical transport, commercial fleet.
perimeter patrol, public safety, event security, long-duration observation.
crop spraying, field monitoring, precision agriculture, seeding drones.
Customization Services (OEM/ODM)
We offer complete drone battery pack assembly based on the AS-A588J9 cell:
- Pack Configuration: Custom series/parallel arrangements — 6S (22.8V), 12S (45.6V), 14S (53.2V), and higher voltage drone packs built to your specifications.
- BMS & Protection: Integrate smart BMS with cell balancing, temperature monitoring, and communication (CAN/SMBus/I2C) for your flight controller.
- Connectors & Wiring: XT60, XT90, AS150, EC5, or custom high-current connectors with silicone wire harnesses.
- Enclosure & Mounting: Custom plastic or carbon-fiber enclosures with mounting brackets designed for your specific airframe.
- Certification Support: UN38.3, MSDS, and air/sea shipping documentation for global distribution.
