Hi, I have 2 brand new batteries, now with 0 and 1 charges... and both with 1380mah... how is it possible?
real capacity is 1480mah.

thanks

Be happy, I have minimum one with already only 1340 after 20 times charging.
But battery warranty time is 6 month, isn't it?
Yep, it is:
'Battery         6 Months and Charge Cycle less than 200 Times'
So a little time to observe that!

This is solved with lastest update¡¡¡¡¡
Now, it doesn´t show any total capacity nor remaining capacity.

Great¡¡¡

It's all nominal. 10-20 per cent loss after many cycles is quite normal.

It never did.  There is no mah measuring meter.  There are only voltmeters.  And in use, volt meters and algorithms that estimate mah based on voltage drop during the flight.  You need to put a known load on the battery and measure the current flow over measured time to know the capacity of your battery.  Adjust your variable load until you are pulling 1.48 amps and see if it lasts an hour.

Get an eraser and clean your drone's battery contacts so you don't have a voltage drop across them and then look at your battery mah app page.  

before lastest update, we had these values. Now.... no values... no problem.

Bright Spark Posted at 2018-1-29 11:04
It's all nominal. 10-20 per cent loss after many cycles is quite normal.

Usually... battery capacity is minimum.... not maximum....
you can buy ie batteries with 2000mah.... and always get more capacity (with powerex chargers or similar). If battery is rated 1480mah.... it must be minimum real capacity. You can´t label a 1500mah offering 1300mah... that would be a "fake" battery.

Regards

WHAT!!! The mAh display is removed!
I used it a lot. Now it’s gone. Hope it gets restored soon.

True, but the max capacity is usually only available for power when discharged at 1 C or less. When using 4-5 C  as the spark does in 15 min or so, they are less efficient which is why they get hot.
Also fast charging shortens the life.

Gunship9 Posted at 2018-1-29 11:08
It never did.  There is no mah measuring meter.  There are only voltmeters.  And in use, volt meters and algorithms that estimate mah based on voltage drop during the flight.  You need to put a known load on the battery and measure the current flow over measured time to know the capacity of your battery.  Adjust your variable load until you are pulling 1.48 amps and see if it lasts an hour.

Get an eraser and clean your drone's battery contacts so you don't have a voltage drop across them and then look at your battery mah app page.

Not quite. There is, in fact, a "Coulomb counting" mechanism built into the battery. When trying to estimate the remaining battery capacity somewhat accurately, you never rely on the voltage alone in an application like this. With a load this heavy and so wildly varying with so many variables like instantaneous current surges when you perform a demanding maneuver or when the drone is fighting the wind, the battery voltage is all over the place, sagging and recovering during the whole discharge cycle. The way Spark and its batteries (smartphones, laptops, etc. being another example) deal with that is to actually keep track of the cumulative charge they've received during the charge and then subtract the integrated instantaneous current and voltage over time as they use the stored energy during the flight in order to get a fairly accurate figure of the remaining battery charge.

Zbig Posted at 2018-1-29 15:01
Not quite. There is, in fact, a "Coulomb counting" mechanism built into the battery. When trying to estimate the remaining battery capacity somewhat accurately, you never rely on the voltage alone in an application like this. With a load this heavy and so wildly varying with so many variables like instantaneous current surges when you perform a demanding maneuver or when the drone is fighting the wind, the battery voltage is all over the place, sagging and recovering during the whole discharge cycle. The way Spark and its batteries (smartphones, laptops, etc. being another example) deal with that is to actually keep track of the cumulative charge they've received during the charge and then subtract the integrated instantaneous current and voltage over time as they use the stored energy during the flight in order to get a fairly accurate figure of the remaining battery charge.

Cool.  Didn't know they had amp meters on them.  How accurate is all this?  The OP was noting a 100mah discrepancy on his full battery.

Gunship9 Posted at 2018-1-29 16:43
Cool.  Didn't know they had amp meters on them.  How accurate is all this?  The OP was noting a 100mah discrepancy on his full battery.

Not really sure, hard to say without dismantling the battery and measuring the bare cells using electronic DC load and I know I'm not willing to sacrifice any of mine ;-)