The HRB 5000mAh 4S 50C LiPo battery was tested to assess how closely it meets its advertised specifications. The evaluation included two main tests: an internal resistance measurement to determine its estimated C rating, and a 105A discharge test to analyze how it performs under sustained load.

What Makes It Unique

The HRB 5000mAh 4S stands out for its balance between price and performance. It isn’t the strongest pack tested, but its results show it performs better than some lower-end competitors. Its moderate internal resistance gives it a usable real C rating, making it a practical choice for those who want consistent output without paying for premium-tier performance.

Internal Resistance

During the charge test, the average internal resistance across all eight cells measured 3.65 milliohms. Based on this value, the estimated C rating was calculated at 18.5C, giving a maximum continuous current of 93 amps. This data was processed using the RC LiPo calculator on Patreon, which converts internal resistance readings into a realistic C rating value.

Load Performance

In the 105A load test, the HRB 5000mAh 4S delivered 4,134mAh of usable capacity. The pack held an average cell voltage of 3.50V at the 10-second mark and produced 845 watt-minutes of energy per cell. The average cell wattage during discharge was 346W.

Practical Applications

This battery is suitable for higher demand RC setups such as speed run cars and EDF jets. It provides a good balance of performance and affordability, maintaining stable output throughout discharge without major voltage sag.

Final Thoughts

The HRB 5000mAh 4S 50C LiPo doesn’t reach the power levels of good value packs like the CNHL G+ or Turnigy Graphene Panther. However, it performs unbelievably better than budget options such as the Zeee or Youme Power batteries. Considering its approximate $47 USD price point, it offers respectable value for users seeking a cost-effective pack with stable, repeatable output. While not a top performer, it delivers predictable results suitable for everyday RC use.

If you’d like full access to the raw data and comparison sheets from my battery tests, consider joining my Patreon community. Tier 1 members get access to the same RC LiPo calculator used in these reviews.