Hey damon, I haven't read the full thread, but I look back at your 30 minute picture. It says 97% does the Inspire know when to return to home/land due to low battery? How does it know the capacity?
Other than the battery mod, do you have to do something with the inspire? how do you mount the plate to the inspire?
Also how does it handle with the big *** batteries flying wise.
Thanks man - congrats on your 30 mins!
I just attached a single 37000mah Aux Battery to the bottom, with one lead to my Inspire battery, got around 25 minutes with X3, but tested my battery EOS Sentry 3 and said it still had 30% left. Has anyone tried connecting the negative lead in the battery before the circuit board? Has anyone successfully drained a single battery setup uniformly?
I found this battery, I wonder if it meets the specifications for coplar in TB48.
Capacity: 5200mAh
Configuration: 6S1P / 22.2V / 6Celulas
Constant discharge: 10C
Peak descargaDischarge (10sec): 20C
Weight: 643g
Size: 142 x 49 x 43mm
What do you think?
The aircraft only knows about the main battery and it's voltage and temp. What it sees is a battery that is draining curiously slowly but otherwise shrugs it off. The strain on the main battery is vastly reduced since the aux batteries are helping supply the needed current.
When the main (remember the internal sensors are inside the main DJI battery, not on the total parallel virtual battery) gets to a voltage level that sets the low voltage alarm off, the aircraft acts accordingly. It's as if the external batteries aren't there. So the % main battery level is what the aircraft sees for voltage meter, not the "virtual" battery made up of main + aux batteries.
Translation: the aux batteries only help, never hurt. Kinda like Googles mantra "do no evil". But that's another story.
No mod is made to the Inspire. No aircraft were harmed in the making of this thread. It's just a battery mod. Pop in an unmodified battery any time and Frank Wang himself wouldn't know anything is different.
Handling wise, it's a bit more sedate but you don't want to strap a "big *** battery" under the Inspire. Just some helpers of the just right variety in terms of C, capacity and weight. I've spent upward of $1000 in lipos to find the sweet spot for an X3-toting rig and it's all documented in this thread. But I'll save you the 4 months and $1,000 bill to find out: it's 2 X 2700 ThunderPower 6S 25C's weighing in at 351g each. Best so far anyway, >30 min flight time to 10%. Still going to try a few more but that's a very nice combo.
Go too big and heavy (I've tried it all, including dual-TB48's, dual-TB47's, etc etc) and you just end up with a big fat heavy bird that flies like a drunken cow.
Hope that helps. Sorry for the delay responding, gotta keep my day job to pay for the experiments
Hey damo thanks for that - if the inspire only knows about the main battery, do the other batteries get depleted first then the main. Is it possible the aux batteries will run out of juice and become dangerously low that it ruins the aux batteries?
Thank you Damon for your clerafication . So I have to connect 4 wires (2 positives and 2 negatives comes from the 2700's to the charg bus inside the inspire bat, tell me please if it's right. In final will be 3 wires come out from each connection in the inspire bat?So the soldering on the battery connects the + and - wires to connectors of your choice (I use XT60) out side the main battery.
Then the extra LiPo's connect to the connectors coming from the DJI battery you added. Hope that helps.
Ask away, we're friendlies here
View attachment 5958
Thanks, but I see from picture that 3 black wire comes from one point this ok, but the reds are not connected to the same poin am I right ?Two out each side. View attachment 6056View attachment 6057
Well, I think it showed me, I am very inexperienced on the subject, I apologize and correct me if I'm wrong, but my intention is to put an extra load 1.354g made a spreadsheet for flight time prediction, but I am concerned about this extra charge.
Capacity: 3000mAh
Voltage: 6S1P / 6 Cell / 22.2V
Discharge: 25C Constant / 50C Burst
Weight: 447g (including wire, plug & case)
Dimensions: 153x46x35mm
Balance Plug: JST-XH (Need Change to XT60)
Discharge Plug: 4mm bullet-connector
And once A6000 Sony and lens, weighing in at 460g
Total payload ~ 1.354g
View attachment 6063
You are also seeing the red and black wires of the actual battery. When you open the battery you will see the Positive and Negative larger are of the battery that has been soldered at the factory. You can add the positive and negative to the required areas. I only used one set of positive and negative and use a Y spliter for the batteries that are connected to the main battery. I took that photo to show you what your seeing. The yellow are the extra XT60 connectors that come out of the battery to add the extra packs. The orange are from the factory and connect the battery to the cells of the battery. They are in the photo, but only to show you the area you must solder the Pos and negative to.Thanks, but I see from picture that 3 black wire comes from one point this ok, but the reds are not connected to the same poin am I right ?
well myself and dean did test today 24.42 mins with one multistage 5200mah
https://www.facebook.com/video.php?v=10208085546203765
Link not working for me, but that sounds about right. X3 or X5? Like I said the low c Multistars and DJI batteries leave close to 35% on the table with main down to 10%.
Thanks, but I see from picture that 3 black wire comes from one point this ok, but the reds are not connected to the same poin am I right ?
Scared the Fukuoka out of me there..I didn't know if that was a typo or if you really strapped a 37,000mah battery to the inspire! That would weigh about 30lbs, which would be a very bad idea.
Yeah with a low C aux battery you will end up with something like 30% unused in the aux with 10% in main. It's wasteful as they don't drain efficiently, and the DJI battery logic seems to get in the way somehow. It's why two TB4X don't work worth a poop, only small increase in flight time and a disproportionate % of unused power left in the aux battery.
Try a higher C aux, (20C-25C minimum) with a more closely matched capacity with the main for more flight time. But watch the weight.
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