Hi - I have built a multirotor with the hope of utilising the stock of batteries I already own for my Iris+ this means Li-po 11.1V 3s 5100mAh 8c batteries. Batteries are expensive and an effort to look after and maintain. The idea of having a one size fits all approach appealed to me with the idea of using them in tandem or some combination.
The outcome is my project is up and running but underpowered as it is heavier than my Iris. I think it sits steady at about 75% throttle, flies for 17 mins on a pair of paralleled batteries, but is slow and laboured.
I appreciate I could run these batteries in series at 22.2V but my motors are not rated for this voltage, also I would probably need to change from 15” to smaller props and part of my design was to make a quiet quad.
I have room to stack up to 3 batteries but I suspect the current build would not cope with this extra weight.
My options are therefore:
- 1 battery - somewhat underpowered + short flight time
- 2 batteries in parallel – underpowered but reasonable flight time
- Purchase new batteries
- Search out some cleaver solution with a transformer or regulator.
I would like to try the build on a 14.8 4s battery as this is the optimum suggested for the motors but I don’t have one.
If I used 3 batteries in series making 33.3V is there a viable way to reduce the voltage maybe in half making 15.15V ?
Any other ideas?
Many thanks
David
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