Many RC enthusiasts wonder if two budget batteries connected in parallel can outperform a premium battery. In this Zeee vs Ovonic parallel test, I compared two Zeee 5200mAh packs and two Ovonic 5200mAh packs against the SMC SRD V4, one of the best-performing batteries tested on the channel.
By connecting two packs in parallel, total capacity doubles while voltage remains the same. As a result, the battery system can deliver higher sustained current and longer runtime. The question is whether that is enough to outperform a top-tier single pack.
Test Setup
The test used two Zeee 5200mAh 120C batteries in parallel and two Ovonic 5200mAh 130C batteries in parallel. Both combinations were compared against the SMC SRD V4 under a continuous 105A load.
Internal resistance calculations showed:
- Zeee parallel setup: 13.2C real rating, 138A continuous capability
- Ovonic parallel setup: 16.2C real rating, 168A continuous capability
Both configurations were capable of sustaining the 105A test load.
Load Test Results
| Metric | 2x Zeee Parallel | 2x Ovonic Parallel | SMC SRD V4 |
|---|---|---|---|
| Usable Capacity (mAh) | 7,714 | 9,922 | 4,806 |
| Energy per Cell (Wh) | Higher than SMC (+54%) | Higher than SMC (+100%) | Baseline |
| Average Cell Wattage | 354W | 372W | 380W |
| Voltage at 10 Seconds | 3.54V | 3.69V | 3.76V |
| mAh to 3.5V/Cell | 642 | 3,896 | 2,513 |
| Time to 3.5V/Cell | Lower than SMC | Higher than SMC (+55%) | Baseline |
| Max Current Wattage | 1,644W | 1,684W | 1,806W |
| Wattage at 10 Seconds | 1,531W | 1,621W | 1,714W |
| Wattage at 30 Seconds | 1,467W | 1,556W | 1,569W |
| Wattage at 60 Seconds | 1,454W | 1,578W | 1,546W |
| Wattage at Cutoff | 1,161W | 1,270W | 1,266W |
Power Delivery Comparison
At the beginning of the run, the SMC clearly led the field. It produced 1,806W at peak current compared to 1,684W from the Ovonic setup and 1,644W from the Zeee setup.
The same trend continued at the 10-second mark. The SMC maintained the highest wattage, showing why premium batteries are often preferred for speed runs and high-power applications.
However, the gap began to shrink as the test continued. By 30 seconds, the Ovonic setup was only 13W behind the SMC. Then, at the 60-second mark, the Ovonic combination moved into first place with 1,578W compared to 1,546W from the SMC. This was the first point where a parallel budget setup outperformed the premium battery.
Capacity and Runtime
Capacity is where the parallel configurations really stood out.
The SMC delivered an impressive 4,806mAh under load, which is very close to its rated capacity. Nevertheless, the larger energy reserve available from two batteries in parallel gave both budget setups a major advantage.
The Zeee combination delivered 7,714mAh.
Meanwhile, the Ovonic setup delivered 9,922mAh, nearly reaching its theoretical 10,400mAh capacity.
As a result, the Ovonic system maintained higher voltage and higher wattage later in the discharge cycle.
Which Setup Is Better?
The answer depends on your goal.
If you want the strongest performance at the start of a run, the SMC remains the winner. It delivered the highest wattage during the first 30 seconds and maintained the highest average cell wattage throughout the test.
However, if your vehicle can accommodate the extra size and weight, two Ovonic packs in parallel delivered the best overall endurance. They provided nearly double the usable capacity while eventually surpassing the SMC in sustained power output.
The Zeee setup also improved capacity significantly, but it was unable to match either the Ovonic or the SMC in overall performance.
Final Thoughts
This test showed that connecting batteries in parallel can absolutely improve performance. While the SMC remained the strongest performer early in the run, the Ovonic parallel setup eventually overtook it thanks to its much larger energy reserve.
The trade-off is simple. You gain runtime and sustained power, but you also add weight and require significantly more battery space.
For maximum performance in a compact package, the SMC still has the advantage. For long-duration high-current operation, however, two Ovonic packs in parallel proved to be a very effective alternative.
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