Phantom 4 batteries all air ?

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Has anyone dismantled a battery and looked inside ?

I noticed this afternoon you can see right through them from side to side and there's nothing at all in what looks like at least 50% of the battery, all the battery cells look to be at the back where the connector is. I presume this is for heat and air flow reasons ? Surely they can add 50% more flight time to the battery by adding more cells and put a small fan in there ? just a thought.
 
They need room to swell too. My soft lipo packs can swell when the get hot. Not a good thing but it happens
 
I understand all the above but look at them, there's at least 50% space in there,lol
 
Have you ever seen a Lipo battery swell up, they can grow up to three times their size, I had one in a model plane that crashed. If they blow look out [emoji95]


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Maybe the processor for the "smart" battery needs additional space and produces heat (for checking million times per second if its a genuine DJI battery).

lipos normally dont swell and dont need any cooling slits, they are dense packets.

Or I hope they left some room on purpose to provide larger capacity batteries in the future.
 
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Simply adding more cells/enlarging the battery isn't necessarily going to give you more flight time. You quickly run up against diminishing returns because of the added weight. Double the battery does not equal double flight time.
 
Last edited:
Maybe the processor for the "smart" battery needs additional space and produces heat (for checking million times per second if its a genuine DJI battery).

lipos normally dont swell and dont need any cooling slits, they are dense packets.

Or I hope they left some room on purpose to provide larger capacity batteries in the future.
I thought Lipos were known to swell?


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Nope not hollow, just appears that way. Thats why modding the p4 bat for externals is almost unheard of because its so tight in there you dont have room to run even a 16 guage wire up the sides
 
What is this showing? Do u know bum? I can't tell if it's looking for a spot to connect too, or problem areas?


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I believe this is showing thoughts/instructions on how to solder an additional wire so you can get 2 batteries together for longer flight time.
 
I believe this is showing thoughts/instructions on how to solder an additional wire so you can get 2 batteries together for longer flight time.
Ah, thanks, it seems it is trying to explain or show something, I'm noticing my batteries has the "dent" the precursor to the crack, I'm positive it's from letting the batteries "snap" or "click" into position, so now I'm clicking them much more gently.


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If your LiPo is "puffing up" that means it's no longer valid for high draw use such as a quad (drone). In fact a LiPo that is experiencing puffing should be immediately put in the bin. Sometimes I keep 1 or 2 puffy ones to use for things like small LCD screen, but in terms of proper safety any LiPo that goes puffy should be disposed of and replaced. Putting a puffy LiPo into any quad is just asking to vent inside the quad. If you've ever seen a LiPo vent you'll know that should this happen your quad will be a total loss and will require replacing.
 

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