This is my solution. Cut from a small sheet of 4mm wetsuit neoprene using cardboard templates, stitched and glued with neoprene adhesive and tape under the battery, and with velco strips sew on the forward edge.
View attachment 6199
Very good point. With an ambient air temperature of 4C, the TB47 batteries got to 44C and 43.5C after one 2 takeoff/landing 8 min and one short 5 min test flights. The temperatures were still raising steadily.Looks good! Keep an eye on temp while you get used to the new blanket. Each set of materials have their own insulating characteristics so you'll want to know what the appropriate ambient temp range is to put this on. Letting battery temp get too hot can be as bad as too cold. Goldilocks zone, etc.
That's great - nice job!The chemical warmers had no effect on compass. Hovered steady as a rock.
Well I just used mine today. It is 28 degrees outside. Flew a tb48 with the mod and the two extra batteries with N Watts x5 holder attached. I did not use the toe warmers. When the flight was done the battery showed a temp of 41.2C.. Much Much warmer then if I did not use the battery insulator. I would have to say you would only have to use the toe warmers in the pockets if the temp was in the teens or at 0. I think DJI should have made this an option for those in cold weather, not just a sticker for the battery either.
Degrees what? C or F. I assume the latter but not everyone uses it. The US is in the minority. Good report thank you.Well I just used mine today. It is 28 degrees outside. Flew a tb48 with the mod and the two extra batteries with N Watts x5 holder attached. I did not use the toe warmers. When the flight was done the battery showed a temp of 41.2C.. Much Much warmer then if I did not use the battery insulator. I would have to say you would only have to use the toe warmers in the pockets if the temp was in the teens or at 0. I think DJI should have made this an option for those in cold weather, not just a sticker for the battery either.
Why do you keep your TB48 warm and cozy and the 2 others not?
Chris
If the aux are higher C rated (25C+) they are less critical than the DJI main battery to keep in the Goldilocks zone as there's less chance of a voltage sag that will tax the batteries due to temp. If your aux are also low C (10C), it would be recommended to keep a jacket on them as well in very cold temps. But with 3 batteries shouldering the load there's still some margin for error.
Super critical is keeping the DJI battery in the zone when not using any aux batteries as the strain on the DJI battery is highest when it's alone and because of it's low C rating the margin of error is much smaller should a voltage sag occur.
I just use the DJI battery heater. I know some flight time is wasted but the process of heating but I have never had any issues. I flew as cold as -8F. Only issue I had was my fingers were so cold I could barely handle the sticks and that was wearing touch screen glovesFor us that use Fahrenheit I made the degree change in F.
" I have found that using the external blanket and chemical warmers ONLY when ambient temp is < 32F will keep battery temp in the 68F - 104F optimal discharge "goldilocks" zone if starting battery temp is 68F+. Adding the chemical warmers when ambient temp is >41F can lead to overheating, with battery temps at end of flight >113F.
Using the blanket WITHOUT chemical warmers between 32F and 59F generally keeps things in the Goldilocks zone. "
Like the ideas and mini Temp Reader in above pics. Could you provide a URL Link or brand/model for the mini Temp Reader.Because: stickers suck
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