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18 Minute flight time with 100Wh battery, real life or theory?
3299 10 2014-11-14
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swomilan
Second Officer

Mexico
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How was the "about" 18 Minute flight time with 100Wh battery established?  Real life or stipulated?
If real life then under what conditions?  Altitude?  Stationary or Moving?  With Video On/Off and at what resolution?  Indoors without GPS,  Outdoors with GPS?   What was the take-off weight? .....?

2014-11-14
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Tahoe_Ed
Captain
Flight distance : 2605 ft
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United States
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I would say 15-22 minutes depending on the factors you mentioned; altitude, temperature, flying style.  At this point all the Inspires are flying at the same weight, about 2.9kg.   
2014-11-14
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swomilan
Second Officer

Mexico
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But under what conditions did DJI establish the 18 minutes.? Same conditions as the advertised P2V+  25 minutes? (that must have been established with the Vision Plus hanging from a string with motors at idle ;) )
2014-11-14
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Tahoe_Ed
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Flight distance : 2605 ft
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Swomilan,

I have not seen a claim of 25 minute flying times on the P2V+.  I know that I have never advised anyone that.  Typically I get 15-20minutes on mine depending on the conditions.  If it is more than 110 degrees or less than 30 degrees F then my flights are on the shorter end of the range.  If it is temperate, then I am on the higher in of the range.  I don't press my batteries unless they have about 10 cycles on them.  They may be smart but I don't think they are brilliant.  
2014-11-14
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ringlis1
lvl.2
Flight distance : 34685 ft
United States
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Tahoe_Ed Posted at 2014-11-15 06:59
Swomilan,

I have not seen a claim of 25 minute flying times on the P2V+.  I know that I have never  ...

25 min flight times was advertised all over the place.  That is one of the reason I purchased the PV2+.  B&H currently says "•Up to 25 Minutes Flying Time".  I was hoping that the inspire would have beat the PV2+ in flight times.

B&H Listing - http://www.bhphotovideo.com/c/se ... arch=yes&sts=ps
2014-11-14
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Tahoe_Ed
Captain
Flight distance : 2605 ft
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You are right and I would like to see them revise that statement.  Those times are more like a bare P2 than a Vision +.
2014-11-14
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info
New

United Kingdom
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Ed, I know you're only the messenger but in the UK it's actually illegal to advertise something (including a performance metric) that isn't repeatedly achievable. Scroll down and you'll see it says 25 minutes

It may say max flight time, but that sets an expectation.
2014-11-15
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chris
lvl.4

Indonesia
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ok, lets say around 18 minutes with the small battery. means we will fly around 25 minutes with the 5700 mwh version. thats fair enough i guess.
but now my question, before ordering an Inspire: how much will cost the battery??
2014-11-15
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swomilan
Second Officer

Mexico
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ringlis1 Posted at 2014-11-15 07:07
25 min flight times was advertised all over the place.  That is one of the reason I purchased the  ...

Well at least B&H is a bit more careful with "UP to",  The statement on the P2V+ box by DJI is as follows:

2014-11-15
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swomilan
Second Officer

Mexico
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chris Posted at 2014-11-15 22:02
ok, lets say around 18 minutes with the small battery. means we will fly around 25 minutes with the  ...

purely theoretical with 18 Minutes as a base for a 100Wh battery you would get maybe 22 Minutes out of the 130Wh battery.  (per kg weight approx. 1.87 W/Minute flight time)
2014-11-15
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chris
lvl.4

Indonesia
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swomilan Posted at 2014-11-15 22:47
purely theoretical with 18 Minutes as a base for a 100Wh battery you would get maybe 22 Minutes out ...

{:3_48:} haha ok.. but the price?
2014-11-15
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