My current battery setup and real tentative plan...
I have yet to truly stress test it with an all day Ag farm field survey shoot however...
Inventory...
7x batteries (3x 47's plus 4x 48's)
5x 100w DJI chargers
I will count the 47's as 10 mins and 48's as 15 mins fly time when rough estimating
very conservatively...
If it's windy..I will halve that... Will adjust these figures as experience shows reality...
So 90 mins base available with 45 mins windy day worse case...
The Need...
Ag Bird will be carrying two extra lightweight point and shoot cameras... (Canon SX260's with MaxMax mods)
https://www.maxmax.com/5-band.htm
They are modified to make a 5 channel NDVI crop camera set with interval trigger timer to fire both.
The added weight is the main reason I'm figuring fly times very conservatively...
I will NOT be using MaxMax's camera mount...working on a custom mount to fit the bird...
The working plan...
Stock camera will be taking 4K video to pull color stills from in post...
NDVI set is snapping 4000x3000 pic pairs with RGB + edge IR + near IR channels for NDVI post...
This is the 1 year from now plan anyway...
If I need more...
True sine wave converter nearby wired into my dual alternator Cummins pickup truck...
Truck taken for a "soda run" as needed to top it's dual stock AGM battery's...
Five a charging... one a flying,,,one in transit between rigs...
I think it looks good on paper...