Larger battery? 340mHa (plus 1 gram camera)
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Larger battery? 340mHa (plus 1 gram camera)
Hello! I'm busy planning how to program and upgrade my nano quadcopter once it arrives in May (yes, I'm a 2nd batch customer).
I thought that the 7 minute flight time is ok, but why not upgrade the battery for more flight time and peripherals? I estimate the 170mAh 3.7V battery that comes with the quadcopter to weigh about 4.1 grams. I have found a 340mAh battery that weighs 6.3 grams (assuming they are telling the truth), example: http://ufo-battery.en.alibaba.com/produ ... t_MP3.html
Adding on the http://www.fpvhobby.com/143-sub-nano-combo-set.html (which was mentioned in the comments section of the key chain camera blog post and accepts 3.5-5V power) would add another 1 gram.
So, total added weight is 3.2 grams for double battery capacity + camera!
EDIT: I forgot to state that the payload capacity seems to be 5 grams for good flying performance and 10 grams as an absolute max. Source: http://www.seeedstudio.com/depot/preord ... -1365.html
I thought that the 7 minute flight time is ok, but why not upgrade the battery for more flight time and peripherals? I estimate the 170mAh 3.7V battery that comes with the quadcopter to weigh about 4.1 grams. I have found a 340mAh battery that weighs 6.3 grams (assuming they are telling the truth), example: http://ufo-battery.en.alibaba.com/produ ... t_MP3.html
Adding on the http://www.fpvhobby.com/143-sub-nano-combo-set.html (which was mentioned in the comments section of the key chain camera blog post and accepts 3.5-5V power) would add another 1 gram.
So, total added weight is 3.2 grams for double battery capacity + camera!
EDIT: I forgot to state that the payload capacity seems to be 5 grams for good flying performance and 10 grams as an absolute max. Source: http://www.seeedstudio.com/depot/preord ... -1365.html
Re: Larger battery? 340mHa (plus 1 gram camera)
Changing battery shouldn't be a problem but I'm not so sure your suggested battery will work that well.
They state:
10. Continous discharging current: 340mA
11. Discharging Current (Max. ): 680mA
The Crazyflie consumes 1400mA only when hovering. So to get good flight performance you need a >15C preferable 25C continuous discharge current. If you find a 340mAh with 25C and 6.2g please let us know because that would improve flight performance and flight time a lot
They state:
10. Continous discharging current: 340mA
11. Discharging Current (Max. ): 680mA
The Crazyflie consumes 1400mA only when hovering. So to get good flight performance you need a >15C preferable 25C continuous discharge current. If you find a 340mAh with 25C and 6.2g please let us know because that would improve flight performance and flight time a lot
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- Beginner
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Re: Larger battery? 340mHa (plus 1 gram camera)
Thank you for that input! I will continue the search and keep you updated.
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- Beginner
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Re: Larger battery? 340mHa (plus 1 gram camera)
My first update.. I have found the following 25C battery at http://thunderpowerrc.com/html/G6ProLit ... teries.htm
(third item from the table)
Model: TP240-1SPL25UM
Capacity/Cell Count/Voltage: 240mAh 1-Cell/1S 3.7V
Weight: 6.6 grams
They also have a 350mAh 3.7V battery, but at a cost of 11 grams.. a bit heavy
(third item from the table)
Model: TP240-1SPL25UM
Capacity/Cell Count/Voltage: 240mAh 1-Cell/1S 3.7V
Weight: 6.6 grams
They also have a 350mAh 3.7V battery, but at a cost of 11 grams.. a bit heavy
Re: Larger battery? 340mHa (plus 1 gram camera)
That battery would work much better but the dimensions are not optimal: 5.7x18.6x41.5. The "inner" shape of the Crazyflie is 30mm and it would be good if the battery stayed inside this dimension. Also a more square battery would give better flight dynamics as the inertia would be more even.
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Re: Larger battery? 340mHa (plus 1 gram camera)
Thanks! I'm getting closer.
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Re: Larger battery? 340mHa (plus 1 gram camera)
And you can't use two batteries of the kind that comes with the Crazyflie in parallel and stacked?
Re: Larger battery? 340mHa (plus 1 gram camera)
I'm not completely sure but it should be possible to stack them in parallel, a bit difficult to realize though.
Re: Larger battery? 340mHa (plus 1 gram camera)
I recommend to use velcro tape to attach the LiPo on the CF for faster battery exchange. It is also very well to find the perfect Balancing during the assembly.
Re: Larger battery? 340mHa (plus 1 gram camera)
Another method (if you don't have access to velcro tape) is using a small rubber band like this:
/Marcus
/Marcus