Bonka HV semi-solid-state 8S 38000mAh – maximum energy density for long flights
Bonka's semi-solid-state batteries combine state-of-the-art cell technology with what counts for multicopters and large models: lots of energy at the lowest possible weight, a stable voltage and, above all, safety. The semi-solid electrolyte makes the cells mechanically more stable and far less sensitive than conventional LiPo batteries.
- 🔋 Stable voltage across a wide load range
- ⚙️ Compact design – ideal when space in the model is tight
- 🔥 Increased safety – reduced risk of fire and explosion
- 🔁 Long-lasting – an above-average number of charge cycles with consistent performance
- 🌡️ Temperature-resistant – reliable even in demanding conditions
HV technology: The cells are charged to 4.4V instead of the usual 4.2V, so the battery holds more energy at the same size. Be sure to set your charger to LiHV or 4.4V per cell.
Whether drone, RC vehicle, model aircraft or custom build: with this battery you are choosing precision, safety and efficiency.
Specifications
| Nominal voltage |
31.2V (8S1P, 3.9V/cell) |
| Max. charge voltage |
35.2V (4.4V/cell) |
| Capacity |
38000mAh |
| Energy density |
520Wh/kg at cell level |
| Max. discharge |
10C = 380A |
| Weight |
approx. 2626g |
| Dimensions |
190 × 75 × 88mm |
| Balance connector |
JST-XH, flexible silicone wire |
| Power lead |
8AWG, flexible silicone wire |
| Connector |
XT90 anti-spark |
Important for setting up your ESC
The cells have a voltage range of 4.4V to 2.5V, so set your ESC's cut-off voltage to 2.8V per cell.
Good to know
The 520Wh/kg cells expand in height by up to 17 % when charging and contract again when discharging. This is due to the special cell chemistry and, according to the manufacturer, completely normal. So leave some space above the battery in your model and mount it so that it can expand in height.
Charging
Our recommendation for a long service life: 0.5C = 19A. Important: set your charger to LiHV (4.4V per cell).
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