Good morning!

bro how to check if the lithium battery kong or not?

batt tester(for multi cells) or multimeter. usually if a cell is damaged, it won't hold a charge as long as it used to.

if you ever discharged a lithium batt below 3.0v, there is a chance that it is damaged. (depends on cell quality.)

that mean even 'discharged', the battery still content at least 3.0v?

Condition 1:
If the Li-po battery is below 2.8v and you cannot charge fully (trickle charge at 0.2A) it then its 'kong'. Above 2.8v is salvageable.

Condition 2
If your Li-po battery physically 'ballooned' or feel spongy you manage to full charge it but performed 50% or less runtime from original then its 'kong' because its loosing "A" (Amp) performance. Throw it away before it gives you mental pain.


A good healthy Li-po battery have minimum 'storage' charge at 3.5v per-cell, Min limit 3.3v and max limit 4.2v~.
I have many Li-po battery accidentally discharge at 2.7~2.8V per-cell because i fly my jet (EDF) at full amp but still manage to keep it alive and healthy for 5 years if you practice always to charge/balance it at 0.5~0.8A rate. If you never intend to use Li-po battery within 3 days keep it at storage mode at 3.5V per-cell as oppose to 3.8v by popular trends.

This post has been edited by SupermotoXL: May 9 2017, 01:02 PM

eh wrong bro
not lipo, i know about lipo
i mean li-ion

all lithium based battery works the same way. just with a little +/- in the voltage values. example, a good quality li-ion can go down to 2.5v and still be fine.

Like Zeroglyph says, same thing but slightly lower at 2.5v. The good news about Li-on, it seldom 'kong' compare to Li-po. I drain it up to 1.8v per-cell but manage to charge back and runs ok like new.

U connect battery use hand welder or normal solder?

I use basic 60W normal solder, to solder on Li-on cylinder make sure you scrub the negative and positive contact terminal using sand paper "kertas pasir' to get the rough surface so that the melted solder could grip tight on the surface else solder patch won't stick very well.

I want to buy my first drone , should i buy dji mavic pro? Is it easy to control?

Yes Mavic Pro is easy to control because its automatic assisted flight. With that price everything is automation.

Bro ,I am new to this hobby too.
may I know the fb page u bought from? You can pm me ya. So muchhh thx

thanks for the info bro

do note that mavic/phantom and the likes don't really teach you much in terms of flying the craft. those are aerial photography quad, so it does most of the flying for you while you take pictures/video. it's easier, but less thrilling.

it's like driving manual vs automatic.

Haha thanks for the info , as long can take good photo is good enough for me .
Do we need any license to fly the drone when want to take photo?

No license.

Anyway, whatever you choose to fly, manual or auto(mation), always remember to fly safely and responsibly.

For non-commercial purpose no need license, but is you take photo of someones daughter you need special license from her parent.

How much you bought this? Is it worth to buy? Can share some photo taken by this drone?
Looking for affordable fordable drone like this.

I think its a small drone, You can check it out here for details: http://www.gearbest.com/rc-quadcopters/pp_447880.html