I want to buy some components to keep stock or for a future quad that I will build.

these capacitor can be good ?

https://it.aliexpress.com/item/100500207...6cM8U&mp=1

with what feature do I buy it?

10v 1000uf

the choice depends if I use it with 4s or 6s?

Nope. Buy from a reputable electronic component dealer:
Mouser.com
Digikey.com
Jameco.com

This will give you a good rundown on what to use:
https://oscarliang.com/capacitors-mini-quad/

Other than size and weight restrictions, it’s not gonna hurt to go with higher voltage (v) or higher capacitance (F, but we’re talking microfarads, so- uf [or mfd]).

Low ESR is the bigger thing to pay attention to. But also, buying from a reputable source whose specifications you can trust.

As I understand it you need low ESR capacitors and I'm not sure those are low ESR becaues I can't find that info on the page.
Regarding feature the voltage needs to be over the battery voltage so for 4S thats 16.8 so I would go with 25V and 6S is max 25,2 so I would go 35 for them. The size depends a bit on what you can fit in your build but 470-1000 is pretty normal.

Just get some Panasonic FR or FM series capacitors. Steer well clear of any unbranded or no-name capacitors.

https://intofpv.com/t-capacitor-s-lifesp...0#pid50930

(11-Nov-2021, 12:53 PM)SnowLeopardFPV Wrote: Just get some Panasonic FR or FM series capacitors. Steer well clear of any unbranded or no-name capacitors.

https://intofpv.com/t-capacitor-s-lifesp...0#pid50930

ok, i find these two on amazon, the easier site to me to buy:

they could be fine:
https://www.amazon.it/Panasonic-Condensa...B00HKSLQZ8

the panasonic model looks very big;


the model i have installed on my drone and i received with the ESC racestar 4in1 is that:
https://i.imgur.com/jJLJJ9b.jpg
https://i.imgur.com/gDg9fMk.jpg

looks like is that brand model:
https://it.aliexpress.com/item/100500204...3753%22%7D

"JWCO" capacitors. I've never heard of that brand before so personally I would avoid using them.

The Panasonic capacitor you linked to is 1500uF. You don't need anything that big. 1000uF is as big as you need to go on a 5" quad running 4S or 6S, and in some cases you can get away with a 470uF capacitor. If you have enough space in your quad, use a 1000uF capacitor.

(11-Nov-2021, 02:34 PM)SnowLeopardFPV Wrote: "JWCO" capacitors. I've never heard of that brand before so personally I would avoid using them.

The Panasonic capacitor you linked to is 1500uF. You don't need anything that big. 1000uF is as big as you need to go on a 5" quad running 4S or 6S, and in some cases you can get away with a 470uF capacitor. If you have enough space in your quad, use a 1000uF capacitor.

are difficult to be find with brand name online to can be took in italy without pay too much shipping costs...

https://it.farnell.com/panasonic/eeufc0j...pd-mi-alte

https://it.farnell.com/panasonic/eeufm0j...pd-mi-alte

indicate in the description:

Nominal voltage range from 6.3VDC to 50VDC

(12-Nov-2021, 12:15 AM)Rosssiiii Wrote: are difficult to be find with brand name online to can be took in italy without pay too much shipping costs...

https://it.farnell.com/panasonic/eeufc0j...pd-mi-alte

https://it.farnell.com/panasonic/eeufm0j...pd-mi-alte

indicate in the description:

Nominal voltage range from 6.3VDC to 50VDC

the panasonic you found doesnt seem to be a low esr capacitor
dont hide costs for a quality capacitator ;-) its good placed money, can save the rest expensive electronic parts.

Many FPV shops will carry low ESR capacitors. Do you have any you order from regularly?

A quick Google found these:
https://www.drone24hours.com/product/con...esc-220uf/
https://www.drone24hours.com/product/35v...itor-rohs/

(11-Nov-2021, 12:35 PM)Lemonyleprosy Wrote: Nope. Buy from a reputable electronic component dealer:
Mouser.com
Digikey.com
Jameco.com

This will give you a good rundown on what to use:
https://oscarliang.com/capacitors-mini-quad/

Other than size and weight restrictions, it’s not gonna hurt to go with higher voltage (v) or higher capacitance (F, but we’re talking microfarads, so- uf [or mfd]).

Low ESR is the bigger thing to pay attention to. But also, buying from a reputable source whose specifications you can trust.

(11-Nov-2021, 12:53 PM)SnowLeopardFPV Wrote: Just get some Panasonic FR or FM series capacitors. Steer well clear of any unbranded or no-name capacitors.

https://intofpv.com/t-capacitor-s-lifesp...0#pid50930

(12-Nov-2021, 12:34 AM)hugnosed_bat Wrote: the panasonic you found doesnt seem to be a low esr capacitor
dont hide costs for a quality capacitator ;-) its good placed money, can save the rest expensive electronic parts.

(12-Nov-2021, 12:43 AM)V-22 Wrote: Many FPV shops will carry low ESR capacitors. Do you have any you order from regularly?

A quick Google found these:
https://www.drone24hours.com/product/con...esc-220uf/
https://www.drone24hours.com/product/35v...itor-rohs/

Yes unfortunately I'm used to buy stuff from Amazon but for drones small components more from AliExpress.

https://www.mouser.it/ProductDetail/Pana...ig3w%3D%3D

That should be fine ?

The problem is that for a cheap components like that I risk to pay more shipping costs then the price of the components.

Then I don't understand as on this video, is better to put the capacitor on the battery 1000uf or put on also on the ESC (300uf) ?

But maybe he is referring to put one on each arm ESC ? But I never seen capacitor on any single arm ESC.

In my case I have 4in1 so is where o plug in the battery is the ESC and I shouldn't have noise issues ?

System let me decide these other shipping methods, but who know how much time will require and if there is a tracking:
https://i.imgur.com/3t0NPs6.jpeg

Does someone had experience with that shipping method from that website ?

I can't vouch for them shipping internationally but Mouser is solid as a parts source. We used them exclusively back during the capacitor plague days.

Always heard it was a pain to ship to Italy because their customs in clearing packages in a timely matter (and this was way before Covid-19). I recall seeing some vendors would ship to anywhere in the world except Italy for this reason.

(14-Nov-2021, 01:04 PM)sevro Wrote: I can't vouch for them shipping internationally but Mouser is solid as a parts source. We used them exclusively back during the capacitor plague days.

Always heard it was a pain to ship to Italy because their customs in clearing packages in a timely matter (and this was way before Covid-19). I recall seeing some vendors would ship to anywhere in the world except Italy for this reason.

i will try to ask them

@snowleopardfpv is that the correct capacitor for battery ?:
https://www.mouser.it/ProductDetail/Pana...qY5NICig3w==

i don't find where is indicated the voltage, but is indicated : 
"low esr radial leaded aluminium electrolytic capacitor"


----
I would like to buy these to have them in stock.

But anyway, since I have already mounted on the wizard the capacitor that they gave me with the Racerstar Air50 3-6S 50A esc, which would be this here:
https://it.aliexpress.com/item/100500204...3753%22%7D

can I leave it or do I have to change it?

to change it I would have to disassemble half the drone due to the fact that it is welded on the battery / esc cables and they produce a lot of heat, and it is inconvenient to work with it inside the drone