I may jump in here, and say I am no expert on the DJI brand and I am very new to this hobby, but in my next breath I know a bit about using lipos in rc racing and about charging/discharging and storage. Unfortunately a lipo is a very big fire hazard if not treated correctly. It does not like to be stored full of energy or left empty. I use my racing lipos to extremes, and we have in fact been banned from warming them. Heat changes the chemical reaction inside and can take the battery over voltage causing a fire. Also charging in a cold place then taking the batteries outside and it heats up can take it over voltage as well and it can catch fire. Yes I know you all know this, and my point is.
My point is I have used various lipos and they are all charged in a controlled environment with a very high quality balance charger. From the very cheapest to the most expensive lipos there is very little difference in lifespan or performance. Most of the lipos come from the same factory it is just the manufacturers will match and select the most equal ones and grade them by price. Usually a higher priced better quality lipo has a lower resistance, letting the power out quicker, and we are drawing 700 amps at times from these packs. We can drain a 6000 mah pack in 6 minutes.
What I am trying to say in these cheaper packs are possibly equal in performance to the DJI and the circuit wear will have been copied, so it is possible you could get better cells in the non DJI battery packs.
Sorry to drag on about nothing, but as a modeller I am open minded
on non branded cells. Let's face it you can buy a 4800 4s lipo for £20-£30uk, the circuit board will cost pennies and the plastic casing a few pounds. One thing we do know is the Chinese for learn is copy.
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