I purchased a battery a few weeks back. I have charged it about 6 times now but the app shows 2 charges. I have been running it down to 50% each flight (breakin period) and of course charging it back up to 100% on the day i use it.

I noticed similar things with mine.  It doesn't seem to count all charges.  Does it need to be run WAY down to register a charge?  I don't know.  I just recently did a "calibration" discharge/charge on both of mine, but didn't even think to check the charge number beforehand.

Buggered if I know, mine does the same. It shows way less charges than have actually been performed. I just ignore it now.

Geebax Posted at 2016-3-22 18:56
Buggered if I know, mine does the same. It shows way less charges than have actually been performed. ...

I dont have a problem with ignoring it,im just curious. If i remember correctly,you fly to 50% every flight.Am i correct?  How many of your batteries do this?

This was explained by DJI in the Ph2 forums before. It measures the mAh the battery receives and 1 cycle is equivalent to the full capacity, i.e., 4480 mAh for P3 or 5200 mAh for P2.

Cheers.

jaycee Posted at 2016-3-22 19:26
This was explained by DJI in the Ph2 forums before. It measures the mAh the battery receives and 1 c ...

So if the battery for some odd reason is not charging to 100%, it wont register as a charge cycle?

Elmer Fudd Posted at 2016-3-23 10:05
I dont have a problem with ignoring it,im just curious. If i remember correctly,you fly to 50% eve ...

Yeah, I don't fly to low battery values for safety reasons. My batteries seem to show about half the actual number of cycles. I have 3 batteries.

Geebax Posted at 2016-3-22 19:43
Yeah, I don't fly to low battery values for safety reasons. My batteries seem to show about half t ...

Well if thats the case, flying to only 50% cant be good thing. If what jaycee says is correct, the batteries never receive 100% full charge in order to be counted as a charge cycle. Only one of my batteries does this and coincidently, it has a much shorter flight time than my other 2.

Elmer Fudd Posted at 2016-3-23 10:58
Well if thats the case, flying to only 50% cant be good thing. If what jaycee says is correct, the ...

I still run the batteries down afterwards, I just don't fly for less than 50%. I only just managed to afford to buy this aircraft, and I take no risks with it.

Geebax Posted at 2016-3-22 20:02
I still run the batteries down afterwards, I just don't fly for less than 50%. I only just managed ...

I dont blame you for being cautious.Im just trying to figure out why some batteries dont count charges correctly.

Elmer Fudd Posted at 2016-3-23 07:41
So if the battery for some odd reason is not charging to 100%, it wont register as a charge cycle?

We never really drain the battery down to zero so its always a partial charge (less than 100%). It will sum up the mAh received from every charge. Eventually, it accumulates enough for 1 cycle.

Cheers

jaycee Posted at 2016-3-23 10:49
We never really drain the battery down to zero so its always a partial charge (less than 100%). It ...

Interesting. Thanks.

The battery count works like this.
You have 1 battery.
Flight 1. You use 80% and charge it to full. This is 0.8 of a cycle.
Flight 2. You use 60% and charge it to full. This is 0.6 of a cycle.
Flight 3. You use 90% and charge it to full. This is 0.9 of a cycle.

0.8+0.6+0.9 = 2.3 cycles. The app will only show 2 cycles.
Make sense? So fully charging a battery to 100% (technically) does NOT count as a cycle. If this was the case, I would be at 400 as I top up before I fly.

quanthonytrang Posted at 2016-3-24 09:06
The battery count works like this.
You have 1 battery.
Flight 1. You use 80% and charge it to full.  ...

Yeah i get it. Thanks.

Elmer Fudd Posted at 2016-5-11 12:07
Yeah i get it. Thanks.

Have you been away for a while?

Geebax Posted at 2016-5-11 10:42
Have you been away for a while?

Nah.... ive been around. Spring is here and i've been busy with work. I stop in every once in while. New wave of beginners with pretty much the say old basic questions.

Elmer Fudd Posted at 2016-5-11 12:54
Nah.... ive been around. Spring is here and i've been busy with work. I stop in every once in whil ...

Yeah, I have noticed the repeating pattern. I keep dishing up the same answers over and over again.

quanthonytrang Posted at 2016-3-23 17:06
The battery count works like this.
You have 1 battery.
Flight 1. You use 80% and charge it to full. This is 0.8 of a cycle.

It´s logical, but. I took off, check the battery and it was 3c, flew till 50%, landed, turn the drone off, after 5 minutes took off again with the same battery, check again and it was 4c.
Mavic 2Pro

EmilioCid Posted at 2-2 15:10
It´s logical, but. I took off, check the battery and it was 3c, flew till 50%, landed, turn the drone off, after 5 minutes took off again with the same battery, check again and it was 4c.
Mavic 2Pro

I would be wary of launching with a 50% battery

Mark The Droner Posted at 2-2 15:12
I would be wary of launching with a 50% battery

It was just to check the cycle counting.

not recording a cycle is a good thing because these batteries only last 200 cycles