Anafi battery tester ?

Fmaxii · Nov 9, 2020

As it seems not possible to have a real live reading of anafi battery with FF6 (this % is not reliable...), does a battery tester usable to test our barreries ?

we can see lots of battery tester for many kinds of batteries, even for bebop2, an adapter cable exists to connect the bebop battery to a charger/tester, but for now, i’m not able to find something for our barreries.

Have seen something to test them?

Liger 1956 · Nov 9, 2020

You can measure the Anafi battery voltage by using a simple multimeter across the main battery terminals.

Fmaxii · Nov 9, 2020

You’re right, but this is not a test as a tester can do, and even a balance charge between the two cells.

Fmaxii · Nov 9, 2020

I have just charged my 3 batteries and mesured the voltage.
Batt 1 is 8.17v
Batt 2 is 8.56v
Batt 3 is 8.61v

I don’t know what i must think about that...

Liger 1956 · Nov 9, 2020

Are those voltages measured fresh off the charger after the LEDs indicated a full charge or after they have been resting for a while. If you put them into the Anafi and power it on what % battery does FF6 report?

I must do the same with my batteries when I get chance.

Fmaxii · Nov 9, 2020

It was mesured 10 minutes after being disconnected from the charger.
I’ll test which % will be seen on FF6 today, in few hours.

Fmaxii · Nov 9, 2020

Batt 1: 8.18v. FF6: 100% during 3 seconds, then 99%
Batt 2: 8.53v. FF6: 96%, stable value.
Batt 3: 8.58v. FF6: 97% during 3 seconds, then 96%

It’s hard to explain the relation between the voltage and the %....
And also hard to say which battery is better than an other one...

Liger 1956 · Nov 9, 2020

So FF6 is reporting that the battery with the lowest voltage, battery 1, has the highest % charge?

Fmaxii · Nov 9, 2020

Liger 1956 said:
So FF6 is reporting that the battery with the lowest voltage, battery 1, has the highest % charge?

Exactly...

Ana789 · Nov 9, 2020

Am I the only one, who does see that already as a problem?
I remember, that FF6 did tell every charge different numbers, also for the capacity

Fmaxii · Nov 9, 2020

I never looked at this before.
it’s a problem anyway.
The possibility to have an anafi battery tester would be appreciate...
Because for now, the multimeter seems to be the only tool we can use to have an idea of the quality of the batteries

Gipsz Jakab · Nov 11, 2020

Fmaxii said:
Batt 1: 8.18v. FF6: 100% during 3 seconds, then 99%
Batt 2: 8.53v. FF6: 96%, stable value.
Batt 3: 8.58v. FF6: 97% during 3 seconds, then 96%

It’s hard to explain the relation between the voltage and the %....
And also hard to say which battery is better than an other one...

I don't think the state of the battery is determined by the full charge, but by the 40-50% charge. Here, batteries in different states show a much larger difference.
Immerse to max (43%). and measure it here. It should be 3,700V at 44% -43%.
In fact, you would have to immerse yourself in 2-3% to really come out your weakness ...
And these measurements, on top of being unloaded, don’t really show the condition. The voltage drop is much steeper than a weak battery ...
The solution could be:

Solaris8x86 views on the Parrot Anafi crash's(5/Nov)

Not direct related. But It will force land itself accidentially when the gauge is getting low. To you, is crash landing. Thanks for the reply, that means it will crash for sure if there is a battery physical problem or worn out, and you never can know when it will be, then are there ways to...

parrotpilots.com

Fmaxii · Nov 13, 2020

Others information from my batteries:

Batt 1: 8.18v. FF6: 100%, with max capacity indicated in FF6: 53%
Batt 2: 8.53v. FF6: 96%, max capacity: 96%
Batt 3: 8.58v. FF6: 97%, max capacity: 97%

It looks like my battery 1 isn’t in good health...

Gipsz Jakab · Nov 13, 2020

Fmaxii said:
Others information from my batteries:

Batt 1: 8.18v. FF6: 100%, with max capacity indicated in FF6: 53%
Batt 2: 8.53v. FF6: 96%, max capacity: 96%
Batt 3: 8.58v. FF6: 97%, max capacity: 97%

It looks like my battery 1 isn’t in good health...

In flight? Because it's really only interesting under load ...

Fmaxii · Nov 13, 2020

No, it’s not in flight.
The max capacity will not change during flight. This value is visible on FF6 where you can see the numbers of flight of anafi, the total flight time, etc..
With this 53%, i understand that my battery 1 is half used....

kotronas · Nov 17, 2020

ok i did a measurement just for you.
I own 2 batteries A 28 cycles B 38 cycles
Battery A 100% 8.94V
50% 7.92V
40% 7.58V

Battery B 100% 8.90V
50% 7.88V
40% 7.54V

Hope it helps i don't drain them lower than 30% because i get my work in 40 minutes with both batteries if i have longer flights and lower stats i will post you the volts.

Liger 1956 · Nov 17, 2020

Those 100% voltages appear very high. LiHv batteries should not be charged at more than 4.35v/cell so a maximum for 2S batteries of 8.7v. Did you actually measure the voltage with a multimeter or take the figures from @AnafiPilot1 modified FF6?