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May 06, 2018, 11:45 PM
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Iridium Dynamics batteries: high power-density, high reliability, long-life

Hi all,

I've been working on a pretty cool long-endurance fixed-wing / rotary-wing hybrid aircraft for a while. The advantage of this design is hovering efficiency, but those details are for another thread!

Long story short: I created a company to commercialise the concept, and in the process of getting it to market, we found that there was very little choice of high energy-density batteries available for long endurance electric planes. I'm talking about 1-5 hour flight times, so requiring an average of 1C down to 0.2C, or a peak of around 3C down to about 1C. Most of the batteries around at the moment have much higher power densities at the cost of lower energy density. So we ended up building a series of batteries ourselves.

We're testing our first prototypes at the moment, but we expect there may be interest in the wider UAV and RC communities. The specs are available on our website:

The major features are:
- 240 Wh/kg energy density (including the hard-case);
- Built-in cell balancing, and cell health monitoring;
- Real-time voltage, current and cell-temperature data output;
- The first sizes include 151 Wh in 3S or 6S, which are very close to the maximum carry-on limit of 160 Wh;
- Plug-in detect (high impedance connection until plugged-in, avoids sparks and connector corrosion);
- Pricing to be competitive with higher-end RC battery manufacturers, such as Thunderpower.

While is has a custom connector, we are manufacturing break-out boards

If you have any interest in these batteries, please reply with your feedback. We're particularly interested in:
- What sizes you'd be interested in (listed on the website, or other sizes);
- If people are interested in voltage and/or current and/or temperature output via RC telemetry (currently the output is all digital);
- Any features you would like which haven't been listed;
- If you would be interested in joining a testing program, or reviewing the batteries.

Look forward to hearing your feedback!


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