The Azure Energy Racing 5000mAh 4S 120C LiPo is a high-performance battery pack. It features 7-gauge wiring and comes with a massive QS8 connector. I replaced the connector with AS150 connectors to fit my testing equipment. This setup ensures compatibility while maintaining the pack’s original capabilities.
What Makes It Unique
This battery stands out for its thick 7-gauge wiring. It is close to the maximum wire size that the AS150 connector that I used can handle This demonstrates that this pack is built for serious performance. The stock QS8 connector is unusually large, which is rare in RC LiPo packs. These features indicate that Azure prioritizes power delivery and reliability. I love it!
Internal Resistance
I measured the average internal resistance across 8 cells. The result was 1.24 mΩ, slightly higher than the SMC pack I tested previously at 0.95 mΩ. This translates to a calculated C rating of 31.8. That works out to a maximum continuous current of 159A. This is far below the 120C rating advertised on the pack, but at this point, we expect it!
Load Performance
I performed a nominal 105A load test to measure real-world performance. The Azure delivered 4713mAh of usable capacity. Time to 3.50V was 68 seconds, while time to 3.60V was 32.1 seconds. Voltage at the 10-second mark held at 3.73V. Average energy per cell was 1015 Wh-min, with an average wattage of 378.1W.
The discharge curve showed current peaking around 120A before stabilizing near 105A. Near the end of the test, current briefly dropped below 100A. The battery voltage dropped off nicely at the end of the run indicating it was depleted just before low voltage cutoff.
Practical Application
his pack ranks as the second-best battery I’ve tested so far. It delivers outstanding performance for high-power RC applications such as EDF jets and speed-run cars. It’s capable of handling just about anything you throw at it. While it might be a bit excessive for lower-draw, basher-style RC vehicles, you’ll still notice a boost in speed. Even in those setups.
Final Thoughts
The Azure Energy Racing pack is a strong second-place option among high-performance packs I’ve tested. It underperforms the SMC pack slightly but exceeds lower-cost options like CNHL, Turnigy Graphene, Youmee or Zeee batteries. Pricing reflects this positioning, but top-tier batteries will cost.
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