Ideal Number of TB60 Batteries for all day flight

So all of you M300 pilots out there what is the ideal number of sets of batteries to have for your M300 to be able to fly all day. Payload will be the RR R1A. yes will have a generator in the field for most operations. I had this figured out for my DJI Inspire 2 and knew that if I had four sets of batteries I could fly all day as long as when I landed and did a battery swap and got back up in the air by the time I got to my fourth set of batteries the first set should be charged and good to go. Just trying to get some information from the community on this topic.

Hey there! I generally say about 30 min per battery set. I have used a lot of batteries or I’ve used a generator to charge- it’s really up to you. I have done 500ish acres on 3-4 sets of batteries consistently. If you need to fly more I’d suggest 4-6 sets and a generator. I did 3,000 acres with this setup and an r2a in 4 days.


I would suggest 4 sets of batteries… should cover most scenarios.

We have three sets and we need to charge in the field on occasion… however, after the 5/6th mission, you will hit a wall where you must wait for batteries. With 4 sets, this would not be the case.

Has anyone noticed that batteries charged in the field are not “fully charged”… I can have my batteries charged in the field, bring them home, and plug into the wall… and they charge even more!!

I use 5 sets and have a 1000watt power inverter wired into our mobile command station that we can use to charge and run all day. Ive noticed that due to the TB60 batteries needing time to cool, if we put them in the truck and run the AC vent on them after directly removing from the M300, they can begin to recharge after 20 minutes or so. Sometimes less but you will get hot days that you are just better off giving them time. Usually if we are through the 5th set, the 6th set (1st set after cooled and recharge), is fully ready, and so on. Good luck!

With the headache that generators can be, the fueling, the mechanical side, etc…, I recommend a wired in,
(4 to 6 gauge wire is needed minimum for a Clean sign wave when using the DJI Battery charger case for the M300, in order for it to work clean and without throwing any error codes)
and just Idling the vehicle you use while charging to keep your battery and alternator amps up. I use this one and wired it in myself and it works fantastic. I’m not affiliated in any way to this company for the inverter, i just have a good experience with thier brand. Everyone should do this homework on what inverter would run good with the size alternator and engine they have in their vehicle though. Thanks for always being so awesome and so informative, Daniel!

Renogy 1000W Pure Sine Wave Inverter 12V DC to 120V AC Converter for Home, RV, Truck, Off-Grid Solar Power Inverter 12V to 110V with Built-in 5V/2.1A USB Port, AC Hardwire Port, Remote Controller

We use a mix of truck mounted inverter or generator. We do a lot of work in and around wheat fields and an idling truck is a surefire way to start a fire. That being said I strongly agree that having a pure sine inverter is the way to go in the majority of situations.

We keep a couple of fire extinguishers handy for the fire part.

Too bad batteries are eye wateringly expensive, or I would have many many many sets!

The TB-55’s for the M200 are getting super expensive, if you can even find them. Just want to get at least one more year out of the ol’ girl!