Drone Power Solutions (Flagship)
Nexfly 12S 35,000mAh (35Ah) Solid-State Drone Battery — 4625g Standard
12S1P 35000mAh 44.4V
The Nexfly 12S1P 35,000mAh is a semi-solid state drone battery manufactured by Leolus Energy for professional UAV applications. Rated at 44.4V nominal voltage, this battery pack delivers high energy density, stable discharge performance, and advanced BMS protection for agriculture spraying, surveillance, mapping, and delivery drones.
- Battery Model: Nexfly 12S1P
- Nominal Capacity: 35000mAh
- Nominal Voltage: 44.4V
- Battery Dimensions: H：118.5±2.0mm W：89.0±1.0mm L：205.0±2.0mm
- Battery Weight: ~4625g
- Cell Energy Density: ≥320WH
- Cycle Life: ≥600cycle
- Peak Discharge: 5C
Key Features -
Clean Energy with Smarter Innovation
Engineered with high-density lithium cells, our batteries provide extended lifecycle performance, ensuring years of dependable energy storage with minimal degradation.
The main event, what we are all here for. Cheer on the riders as they begin their course.
The main event, what we are all here for. Cheer on the riders as they begin their course.
The main event, what we are all here for. Cheer on the riders as they begin their course.
The main event, what we are all here for. Cheer on the riders as they begin their course.
The main event, what we are all here for. Cheer on the riders as they begin their course.
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What this pack actually delivers
| Nominal voltage | 44.4V — 12S (44.4V) |
|---|---|
| Capacity | 35,000mAh (35Ah) |
| Stored energy | 1,554 Wh — voltage × capacity, the number that actually decides flight time |
| Pack weight | approx. 4,625g |
| Energy density | 336 Wh/kg — computed for this pack, not a best-case figure from elsewhere in the range |
The top of the range. Worth it only on airframes built for the weight; on anything lighter the extra grams cancel most of the extra energy. This is a heavy-lift and endurance choice, not a default upgrade.
What it suits
heavy-lift and endurance work — large spraying rigs, BVLOS and long-range survey, logistics platforms and defence payloads that need voltage to stay stable deep into the flight.
What it is not for
small airframes. A 12S pack that is oversized for the aircraft is dead weight you carry for the whole mission, and it will not buy you flight time.
Before you order
At 12S the pack is often the single heaviest component on the aircraft. Size it against all-up weight, not against the largest number the airframe will physically accept.
Send us your airframe, all-up weight with payload, and the flight time you need. A pack that is right on paper and wrong on the aircraft helps nobody, and we would rather tell you a smaller pack is the better fit than sell you the largest one in the range.
Customer reviews
No reviews for this pack yet. If you have flown it, tell other operators how it held up — flight time, how it behaved in heat, how many cycles you have on it.
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