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I think it’s reasonable to expect users of self-assembled drone batteries to be aware of and careful about those batteries. These batteries are intended for RC
by baddox 9y ago
I think it’s reasonable to expect users of self-assembled drone batteries to be aware of and careful about those batteries. These batteries are intended for RC hobbyists, and are likely to be subjected to physical abuse. I’m talking about the battery packs covered in thin plastic wrap with no integrated protection circuitry, like this: http://www.rapidrcmodels.com/turnigy-5000mah-2s-20c-lipo-pack-with-deans-style-connectors-751-p.asp http://www.rapidrcmodels.com/turnigy-5000mah-2s-20c-lipo-pac...
But batteries in consumer products, like laptops and ready-to-fly drones, should be protected both physically (with a harder plastic case) and with integrated charging circuitry. That seems to be the case with consumer drone batteries, like the DJI Phantom: https://m.dji.com/product/phantom-3-intelligent-flight-battery https://m.dji.com/product/phantom-3-intelligent-flight-batte...
- Zak 9y agoA 20C discharge rate means that battery claims it can supply 100A @ 7.4V (740W) and be discharged in 3 minutes of operation. I don't have experience with RC batteries, but I'm a little skeptical. That's an awfully fast discharge rate, and a lot of power from a 282g battery.
- baddox 9y agoIn the RC hobbyist community it's fairly widely recognized that manufacturers inflate their C ratings. That said, these things can definitely put out a scary amount of power, and discharging batteries in 3-4 minutes of flight isn't unusual for some high performance RC aircraft.
- snovv_crash 9y agoThat is absolutely normal in the high performance RC world. You even get 40C and higher rates cells. No point carrying around a heavier battery than necessary for the power required.
- pixelbreaker 9y agoI have a bunch of 4s Quadcopter batteries that are rated to 95c. If I fly hard I can run it flat (to 3.6v per cell) in 3 minutes
- Zak 9y agoI'd bet on that 95C being fraudulent (at least for more than a couple seconds at a time), but discharge in 3 minutes is 20C, and that's a lot.
- pixelbreaker 9y agoConfiguration: 4S1P / 14.8V / 4Cells Discharge Rate: 95C Max Burst discharge Rate: 190C
- stpe 9y agoThis is from a respected manufacturer and they've got 2-cell 7.4V LiPo batteries with a 120C discharge rate. There must surely be a way to verify this claim? https://teamorion.com/en/news-and-racing/team-orion-ultimate-graphene-lipo-and-ultimate-graphene-lipo-hv-battery-lines-efra-legal-en/ https://teamorion.com/en/news-and-racing/team-orion-ultimate...