21700 S70 Ultra 5000mAh 4S1P Li-ion FPV Battery Pack

Voltage 14.8V 丨High-Performance Long Range Drone Battery | 70A Continuous 丨140A Burst | Ultra-Low IR

S70 Ultra Product Overview

The S70 Ultra 21700 Li-ion battery pack is designed for long-range FPV drones, cinematic UAVs, and high-efficiency endurance builds, delivering a rare balance between high burst power and stable long-duration discharge.

Unlike standard Li-ion packs, the S70 Ultra is engineered with high-current 21700 cells, optimized for real FPV flight conditions where voltage stability, discharge curve consistency, and thermal control directly affect flight performance.

🛡️ Specifications：
Brand：Auline
Molde：A5470
Configuration: 4S1P / 14.8V (16.8V Full Charge)
Capacity: 5000mAh
Continuous Discharge: 70A (14C)
Burst Discharge: 140A (28C, 5 sec)
Approx Weight: 291g (±15g)
Dimensions: 43 × 43 × 75 mm (LWH)
Main Connector: XT60 / XT30
Discharge Cut-off: 2.8V

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☑️ This makes it an ideal choice for pilots searching for:
1. 4S Li-ion FPV battery high discharge
2. long range drone battery 5000mAh
3. high burst Li-ion battery
4. low internal resistance FPV battery pack

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⚡ Burst & High Current Output
140A peak burst discharge (5 seconds)
28C equivalent burst performance
Supports repeated high-load throttle cycling (7C–28C tested up to multiple cycles)

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Huge energy under punch-out
🔋 Continuous Discharge Stability
70A continuous discharge (14C equivalent)
Full discharge range: 4.2V → 2.5V cutoff
Maintains usable voltage output across full flight cycle
This ensures stable cruising for long-range FPV missions without early power drop.

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💪 Thermal Performance
Max temperature under full load test: 87.5°C
Ctrolled heat rise under continuous discharge
Stable structure under repeated burst cycles

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Lab Certified Performance: This model battery cells using industry-grade NEWARE CT-4000 testing equipment to guarantee true-to-spec discharge curves.

Every Rated Specification, Verified by Real World Testing.

At Auline, product performance is presented through real test data and verified results rather than inflated specifications.

All Auline batteries are tested using the NEWARE CT 4004 5V300A, a professional battery testing system, to accurately measure and document actual capacity and discharge performance.

No inflated capacity. No exaggerated performance.

Just real data, so you know exactly what to expect from the battery you receive.

21700 S70 Ultra 5000MAH 4S1P 14.8V 70A XT30/XT60