The Ovonic 5200 mAh 4S LiPo is a soft-case pack with an EC5 connector and a listed 130C rating. Heat build-up at the EC5 connector near 95–105 amps can limit continuous current. I tested the internal resistance, calculated the IR-based C rating, and ran a 105 A load test to see how it performs in real conditions. Let’s dig into it.
What Makes It Unique
This Ovonic pack combines a soft-case form with a high advertised C rating. The EC5 connector is convenient but can limit current flow at higher loads. The mix of larger capacity and soft-case construction makes it suitable for smaller or lighter vehicles.
Internal Resistance
I measured each cell’s resistance and found an average of 4.46 mΩ per cell. Using these values, the calculated C rating is 16.4C. That equals a continuous current of about 85 amps. This is far below the advertised 130C, showing the pack cannot sustain high continuous output.
Load Performance
During the 105 A load test, the Ovonic delivered 2,903 mAh before hitting thermal limits. The pack reached about 58 °C. At 10 seconds, voltage measured 3.54 V, and average cell wattage was 335 W. The pack averaged roughly 95 A until the test was stopped due to max temperatures being reached.
At 3.50 V, the pack produced 377 mAh, and at 3.60 V, 63.3 mAh. These readings show it holds voltage well early but cannot sustain 100 A for long.
Practical Applications
The Ovonic works well for moderate-demand RC setups where power bursts are short. It performs best below 85 A continuous, especially when using EC5 connectors. It fits users seeking a recognized brand, fair performance, that common 5000mAh capacity and a soft-case pack rather than maximum sustained current.
Final Thoughts
The Ovonic 5200 mAh 4S shows that advertised C ratings often exceed real performance. It does better than some low-tier packs in short bursts, but its thermal limits and calculated C rating keep it behind stronger options. For sustained reliability and cost-effectiveness, the Turnigy Rapid remains a better pick, especially at the current prices. Still, the Ovonic offers solid low to mid-range performance for its price.
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