It appears to me that with small digital whoops 2 minutes is the new 3 minutes when it comes to flight time.  Hopefully it is my old tattu, 300mah folded cells that are the culprit and not the build.  Some things I'm finding though.

• You need to build for the lightest config, especially 65mm (pro or regular)
  
• You're better off with lower kV motors with triblades
  
• You're better off with high kv motors and biblades
  
• 0802 motors bring too much of a weight penalty for 65mm (pro or regular)
  

Weight is tricky as there is so much you can't touch apart from the traditional things like battery leads, motor wires, duct arms, vtx heatsink, minimal canopy, etc

For example on my 25g(ish) 65mm pro whoop I'm getting 2:00 mins with the tattus before vtx shutdown when voltage dips below 3V.   I cut off the extra duct arms (the 65mm pro frame has three pairs of arms, I chopped out 1/2 of each pair) and added approx 15 seconds of flight.

I'm waiting on a new batch of tattus as I know the 1s cells die easily but I'd like to know what everyone else is getting flight time wise?  Obviously digital whoops only.

(14-May-2024, 04:58 AM)ph2t Wrote: It appears to me that with small digital whoops 2 minutes is the new 3 minutes when it comes to flight time.  Hopefully it is my old tattu, 300mah folded cells that are the culprit and not the build.  Some things I'm finding though.

• You need to build for the lightest config, especially 65mm (pro or regular)
  
• You're better off with lower kV motors with triblades
  
• You're better off with high kv motors and biblades
  
• 0802 motors bring too much of a weight penalty for 65mm (pro or regular)
  

Weight is tricky as there is so much you can't touch apart from the traditional things like battery leads, motor wires, duct arms, vtx heatsink, minimal canopy, etc

For example on my 25g(ish) 65mm pro whoop I'm getting 2:00 mins with the tattus before vtx shutdown when voltage dips below 3V.   I cut off the extra duct arms (the 65mm pro frame has three pairs of arms, I chopped out 1/2 of each pair) and added approx 15 seconds of flight.

I'm waiting on a new batch of tattus as I know the 1s cells die easily but I'd like to know what everyone else is getting flight time wise?  Obviously digital whoops only.

Sorry I know you pain. I want to mess with a small digital whoop but those darn grams mean so much on the bottom end of the scale. Besides I think the digital VTX also suck up more juice.

I have two exact 3" tooth. One analog and one Walksnail. The analog version will out last the digital by a couple of minutes. Weight is very similar also. Battery are the same.

For 25 grams I think you may have to get some good 450 mah or even 550 mah. Larger packs may not give you more flight time though since the battery is also heavier. For my 23 grams 75mm analog I get 3 minutes from a 300 mah New Bee Drone Nectar Gold. I get 2 minutes from those GNB 380 mah. I get 3 minutes also from some 450 mah 1S. I get 3 minutes again with some 660 mah GNB. Seems like I can't get out of these 3 minutes flight. As long as I am using 0802 and over 20 grams dry.

My two 65's with 0702 motors will fly close to 5 minutes on a 300 mah pack. Doesn't matter which one except for the Dogcom 300 mah. That just didn't work.

Thank you for the feedback mate, yes the digital vtx will add a baseline of 1A+ in consumption, even at 25mW output power so already dealing with extra load.

The dogcom batts you mentioned, are they these ones?

https://www.mantisfpv.com.au/dogcom-75c-...t2-0-plug/

ive recently started paying attention to these flightimes. I just received a HM mob6 2025 eco hdzero. with the folded 300mh bt 2.0 charged at HV (4.36) i would get just at 2 mins flight time OUTSIDE. As soon as the rain stops, Im gonna try some more, see what the results are. BTW the 65mm has 0703 28,000kv motors and weighs 23.5g... the vtx is at 25mw... some things to consider when looking at flight times.
Those batteries are a bit steep... this is what i got
https://betafpv.com/products/lava-1s-300...ttery-5pcs

(14-May-2024, 01:22 PM)ph2t Wrote: Thank you for the feedback mate, yes the digital vtx will add a baseline of 1A+ in consumption, even at 25mW output power so already dealing with extra load.

The dogcom batts you mentioned, are they these ones?

https://www.mantisfpv.com.au/dogcom-75c-...t2-0-plug/

Is this one:

dogcom-300mah-1s-4-35v-hv-75c-lipo-battery-bt2-0



I really want to like it since it is light but no it didn't give me much flight time.

(14-May-2024, 05:31 PM)Rob Axel Wrote: ive recently started paying attention to these flightimes.  I just received a HM mob6 2025 eco hdzero.  with the folded 300mh bt 2.0 charged at HV (4.36) i would get just at 2 mins flight time OUTSIDE.  As soon as the rain stops, Im gonna try some more, see what the results are. BTW the 65mm has 0703 28,000kv motors and weighs 23.5g... the vtx is at 25mw... some things to consider when looking at flight times.
 Those batteries are a bit steep... this is what i got
https://betafpv.com/products/lava-1s-300...ttery-5pcs

Yes I really like those Lava cells. Next to the Tattu's they give me the longest flight time. Surprisingly the OEM blue and white BetaFPV 300 packs are actually behaving well right now. The New Bee Drone Nectar gold packs are also better. The difference I believe is the current draw. Some of these cells simply cannot handle higher current. As long as I use them on a lighter quad with lower current they all behave better.

I get about 3 mins (of feathering the throttle type flying) on those Dogcom 300mAh packs on a 75mm, but can't really give comparison for a 65mm as don't have any that are built.

(14-May-2024, 10:49 PM)Pathfinder075 Wrote: I get about 3 mins (of feathering the throttle type flying) on those Dogcom 300mAh packs on a 75mm, but can't really give comparison for a 65mm as don't have any that are built.

How heavy is your 75mm? I have one more pack I can test.

I didn't really enjoy my 1s digital whoop. I ended up scavenging the vtx out of it to repair my 3s hdzero 75mm. That's a top tier quad for fun. Plenty of juice for acrobatics, small enough that it's just a toy to most people, and also light enough to take some hits and keep on ticking.
65mm is the realm of analog for me, where the quad can be light enough for serious flips and maneuverability.

No idea off hand, it's the 1102 build I gave to my nephew.  I'll have a look in my old threads.  Was flying it two weekends back and was getting about 3 mins on real lightweight level flying and about 2 mins of light acro.  But bear in mind it has an entire order more powerful motors, 1102 18000kv off the top of my head and on larger props, so it isn't really comparable to a 65mm.

So I never weighed it.  It was a build thread from about 18 months back.  I think it was about 36g with lipo.  But it was more powerful than yours and maybe the 1102 motors are more efficient than high kv motors with a much smaller stator, but don't quote me on that as i'm not sure.  the only videos I have were taken using the BetaFPV 300 Lipos and it was like -2C so the sag was crazy and flight time was about two mins of acro and yes those BetaFPV 300mAh 1S Lipos do suck, but they were bouncing back to 3.9V after disarm. I could have probably got maybe 3 mins if i'd just cruised around instead of looping and stalling.

The build was pretty much what the current Meteor75 uses, 1102 18000kv, 5A AIO, M03 VTX, Caddx Ant Nano, HQ 40mm bi blades (I think), running BF 4.3.1 and Bluejay @ 96KHz.

(15-May-2024, 03:32 AM)Pathfinder075 Wrote: No idea off hand, it's the 1102 build I gave to my nephew.  I'll have a look in my old threads.  Was flying it two weekends back and was getting about 3 mins on real lightweight level flying and about 2 mins of light acro.  But bear in mind it has an entire order more powerful motors, 1102 18000kv off the top of my head and on larger props, so it isn't really comparable to a 65mm.

So I never weighed it.  It was a build thread from about 18 months back.  I think it was about 36g with lipo.  But it was more powerful than yours and maybe the 1102 motors are more efficient than high kv motors with a much smaller stator, but don't quote me on that as i'm not sure.  the only videos I have were taken using the BetaFPV 300 Lipos and it was like -2C so the sag was crazy and flight time was about two mins of acro and yes those BetaFPV 300mAh 1S Lipos do suck, but they were bouncing back to 3.9V after disarm.  I could have probably got maybe 3 mins if i'd just cruised around instead of looping and stalling.

The build was pretty much what the current Meteor75 uses, 1102 18000kv, 5A AIO, M03 VTX, Caddx Ant Nano, HQ 40mm bi blades (I think), running BF 4.3.1 and Bluejay @ 96KHz.

Ok you have cold temperature and that definitely inhibit the performance of the batteries.

I finally found the battery that break out of my 3 minute rut with an over 20 grams quad.

I will post more on another thread so as to clutter this up.

Thank you everyone for your replies and insights.

So it looks to be that the current state of 1s stick batteries for 65mm:

• tattu 300mah 1s packs (folded): Tattu 1S 300mAh 75C 3.8V High Voltage Lipo Battery Pack with BT 2.0 Plug (5pcs) (genstattu.com)
  
• betafpv 300mah 1s lava packs (folded): LAVA 1S 300mAh 75C Battery (5PCS) – BETAFPV Hobby
  

Maybe the dogcom is folded too?  I might buy a couple to find out.

(15-May-2024, 07:09 AM)ph2t Wrote: Thank you everyone for your replies and insights.

So it looks to be that the current state of 1s stick batteries for 65mm:

• tattu 300mah 1s packs (folded): Tattu 1S 300mAh 75C 3.8V High Voltage Lipo Battery Pack with BT 2.0 Plug (5pcs) (genstattu.com)
  
• betafpv 300mah 1s lava packs (folded): LAVA 1S 300mAh 75C Battery (5PCS) – BETAFPV Hobby
  

Maybe the dogcom is folded too?  I might buy a couple to find out.

By feeling my Dogcom 300mah I don't think that is folded. The folded cell seems to have nice square edges. The Dogcom I have feels round.

If your 65mm can handle a larger capacity pack I highly recommend it.





I have never been so happy with new batteries.

If you find something you like, then i would use it. I have Lipos I like, lipos I don't like and a lot of mid level stuff that I use because it's cheap, but has downsides. If I have to carry double the number of cheaper lipos to get the flight times I would on half the number on more expensive, then I just accept it, since I have no issues carrying 20-30 lipos to a site.

Good points mate. I do that with the gnb380 1s sticks i have. I get 1:20 flight times lol.

I'm staying with the stick batteries as they fit the 65mm frame natively.

The link to the dogcom 1s stick batteries I posted "appears" to be folded cell. I couldn't confirm though from the listed specs.