Flysky FSI6X - DO NOT Use 2s LiPo Battery

[@SanthoshKumar-mr5ss]

You are the one who help us at the time of difficulties on i6x... So please don't leave from i6x❤️

[@RakishRc]

I6x is my favourite radio for that reason. Even if I buy something else I'll still have a i6x 👍

[@mikel0520991]

Rakish Rc I use a Tenergy 6v 2000mah NIMH for my i6x. Just soldered wires onto pads in battery compartment routed them through the battery cover, used butt splice connectors so I can unhook to charge. Stuck it on with velcro. This allows me to still use AA batt if I want as well. I followed what you had done with yours and I burnt the voltage regulator out in a few weeks of use. Had done all your other mods as well. Just got new i6x and I think what I suggested above is great/safer route. Just my 2cents... Your videos have helped me a lot!

[@RakishRc]

Hi, yes anything that's within 6v is a good alternative. I am using a 5v mini buck converter which also allows me to either use AA or a lipo..the output voltage can be adjusted so I've set it to 5.5v when using a lipo. Thanks for sharing your experience 👍

[@mikel0520991]

@@RakishRc can I ask you quick, moving ahead with my new radio what module are you using for express lrs with your new i6x? Still R9M?

[@RakishRc]

@@mikel0520991 yes still the same r9m with a half burnt 5v power regulator. R9m has 2 power regulators so it's functioning well from the other side 😜

[@smesui1799]

If you plan on using a 2S LiPo battery; ONLY use it with a step-down ( buck ) 5V output voltage regulator module; readily available online. It is inexpensive protection against ruining your transmitter.

[@davidrenaud8798]

Hi, thanks for your useful videos. I have my FS-I6X openTX running on 2S 500mAh JR connector (I get about 2 to 3 hours of use, battery fit in original compartment). I'm using a step down converter adjusted to 7.3v, so that I can fully charge it. Thanks to voltage drop in the converter, I'm able to set an alarm on the TX to detect low battery. Very important: regulator consume power and can fully deeplete Li battery when not in use. I have modified the TX switch (it is a 2 inverter in one) so that it separate the converter from the battery. i have a second FS-I6S and I'm thinking to make a video of the mod with the ref of converter, voltage adjustment and switch mod. About your damaged TX, if you order the same TX, you may be able to track what area is not functioning. And with some electronic knowledge, to be able to change damaged components. You've helped me to select this good TX, I hope you will continue with it. Best regards

[@RakishRc]

That's a very good choice with voltage converter. I should have considered it earlier 😁. Yes if i get the same radio i could compare and try to diagnose the issue. Glad you found this radio perfect for your use. Yes I do consider having the fsi6x again 👍

[@davidrenaud8798]

@@RakishRc hello, I 'm preparing a second radio FS-I6X for Lipo 2S with DC-DC converter . If it preserves TX from high voltage, it is very important to adjust output voltage so that low Bat voltage can be detected to trigger an alarm. My DC-DC converter as a voltage drop off 0.5V, so I set the output at 7.4V which seems to be a reasonable maximum for the TX. In the radio setup, I set the voltage range from 6.8V to 7.4V and an alarm at 6.9V. If there is a way to share pictures with you, I'll show you how to modify main switch so that it cut also stand by consumption of the converter when TX is OFF. By the way, you may modify the title of the video, stating "don't use 2S lipo WITHOUT DC-DC converter (properly adjusted)" Wish you a good night.

[@nmrlab3807]

@@davidrenaud8798 I am very interested in your mod. Could you please share a picture/schematic? I am using 5V DC-DC converter but don't know how to have low Bat voltage. Because of that I have lost two Lipos so far. Thanks.

[@davidrenaud8798]

@@nmrlab3807hello, DC-DC converter with fix voltage 5v is not a good idea. I use a converter with variable voltage output set at 7.4v.. Thanks to voltage drop (about 0.5V),, the output start to drop when output voltage decrease below 8.1V. In the TX setup, I set the voltage range between 6.6v to 7.4V, with an alert at 6.7V. Mot important is to keep in mind the stand by consumption of converter which can kill a pack in a night. So, I have modified the wiring of the TX switch so that it cut also battery output. I need to document that and I'll share it on RC group. Best regards

[@nmrlab3807]

@@davidrenaud8798 ❤Thanks for the explanation. Yeah, that is right the stand by consumption of converter killed my batteries. Please let me know whenever you post the modified wiring of the TX switch on RC group.

[@_Danilo_L.]

I use my FS-i6x with a 1s Lipo and a step-up modul with 6.5 Volt konstantly. But Attention,there are no low voltage Warning from TX.

[@Qwarzz]

I was wondering about this as I saw you using 2s while the regulators are specced for input 6V. They've probably been running quite hot but it's surprising how long they lasted. I just started modding my I6X and the plan is to add step down buck regulator so I can use 2-4s batteries. I definitely need lipos as AA batteries really did not like the ERLS transmitter.

[@RakishRc]

So yes the whole point of using lipo for this raido is to power up the elrs transmitter. Yes you can use a buck converter. I think the grease i applied on power switch shorted something and the lipo was als fully charged so together it messed up the raido. You can use aa for raido and lipo for elrs transmitter just need to have signal and ground wired between radio and elrs transmitter

[@ST19859]

So based on several other reviews I saw I was pretty confident a 2s LIFEpo setup would be safe at about 6.7 volts. Plugged it in and powered on fine the first time, second time powering on it starts surging on and off every few seconds, now it does it with any input even the AA. Looks like I fried mine as well, just wanted to throw this out there as the Life Batt seemed to be well within a safe range but it seems it may not be.

[@RakishRc]

6.7v is actually very close to the rated 6v limit and i am surprised it's acting weird. You may want to check the power cables of the connector on the motherboard and battery bay. I am currently using a buck converter with a 2s and it also powers up with AA if i have to

[@ST19859]

@@RakishRc I ve gone over all the power connections, they look fine. Just every time it powers on it will go to full voltage then exactly every 5 seconds it shuts off for a split second and reboots. Dont know what else it could be, the motherboard looks fine, worked fine on the first boot up and I was able to cycle through the functions for several minutes. Shame as I really like that little transmitter, been good to me for years lol

[@ST19859]

@@RakishRc Thanks for your eariler advice, I figured out it wasnt a voltage issue after all. I had just installed the Open TX firmware not long before. I forgot I had the external PPM port enabled and for some reason that was causing it to power cycle without anything plugged into the trainer port. New problem I ran across though, no matter what I do I cannot get the Open TX to recognize my Happymodel ELRS module. The only thing it sees on external mode is PPM. Thought I might need to save the HM specific LUA script but it says there isnt enough space to do that in the FSI6X memory. Not really sure what else to do.

[@lasersbee]

Putting 1 or 2 standard Slicon Rectifiers in series with the battery will drop the 8.4V fully charged battery voltage to a lower safer level. I haven't had a battery problems with my 2S batteries in my FS16X radios

[@RakishRc]

Yes even I've had very good luck with 2s but with this issue i had with radio i thought it was better to alert other users to avoid having same problem.

[@stelic9515]

Thanks alot for warning!! Hii I am sorry to hear that. I am using it with 2s 18650 for about 4 mounts and had many flights. What I did vas to install in series 2 rectifier diodies that lower the voltage aprox 2- 2.2 v, so when start the transmitter with battery fully charged it show about 6.2 v ( 4 aa battery x 1.5v = 6v ( can be more when batteries are new). I didn't use dc-dc converter because that drain battery even when transmitter is off and I can't see the level of battery during use. I also use the switch from transmitter to power the betafpv ELRS module

[@RakishRc]

That's good! For now although i am using AA i have thought of using some 1500mah AA batteries

[@jayb6180]

My flysky fs-i6s transmitter does not bind. I think ur video is correct. Receiver binded but no output shown in transmitter. Only light is stuck as binded. I need to buy new transmitter?

[@RakishRc]

You have the fsi6s version which has a touchscreen is that right? Did you flash open i6x on that radio?

[@jayb6180]

@@RakishRc thanks for the reply it will take some days for update, my cable's fault I think coz transmitter is not detected in pc.

[@islandrc-duke1972]

Great information and video

[@RakishRc]

Thanks 👍

[@SirScapa]

Hello, was thinkin , cant you use a buck down converter? btw very good and informative channel ,thx👌

[@lokaero]

Yeah bro thats y is used 7806 Voltage regulator. this gives constant 2A 6v output. Using it for Totally 2 Years now and having absolutely no problem. Range is also increased because of 6V 2A.

[@RakishRc]

I am using the mini 360 5v 1amp buck converter on my new raido. How did you test the range diffrence?

[@lokaero]

@@RakishRc Im not directly meaning the Range but the Signal loss error shown in the TX. I Saw a big difference in the error at the same location and distance that i covered. it was around 24% loss first with AA Batteries at 5v. but now im getting only 6% at the same spot and distance.

[@RakishRc]

@@lokaero got it..so then the link is more solid as per your testing. Thanks for sharing I'll do test as well. I had planned a range test between factory firmware and open tx firmware on this raido with ia10b receiver but my drone gps rescue wasn't working as intended so i postponed the video.

[@jena2379]

shall we change the lipo from series to parallel...so we get around 4 volts

[@beerbear9182]

linear power regulators on the board are designed for a voltage of no more than 6 volts. I think they are the problem. you need to replace them for example with ams1117

[@RakishRc]

Yes but it's very fiddly to do that. Instead an external voltage regulator or simply AA batteries are better for radio power. Ony the external module needs more power which leads everyone to use lipo for their radio

[@beerbear9182]

@@RakishRc an external voltage regulator can be used, but then it will become impossible to use a regular battery voltage measuring tool. well, with the replacement of regulators - you can use the 2s battery and batteries

[@lightlord299]

Can I use AMS1117 for my flysky i6s too it's regulator is also gone bad ​@@beerbear9182

[@aminjamadar555]

Hi, I want to ask, can we attach an external antenna to Fsi6x? Is there any issue in attaching an external antenna (replacing the inbuilt once) also the difference in range can be observed...??? Looking for your reply...!!!

[@RakishRc]

Hi, yes you can add external antenna but the range has to be tested to get a comparison with stock antenna. There will be some difference for sure. One fellow from fsi6x open tx group has added external wifi antenna to his radio I'll share his pictures soon 👍

[@grandaddyc]

If the "grease" was Vaseline that would be your problem, it is very very conductive.

[@RakishRc]

Very likely.

[@grandaddyc]

@@RakishRc Bath it in Methylated spirits or denatured alcohol, be careful, do outside away from anyone, no electricity near, and a bucket to throw it into if things go wrong.

[@sumeshs1280]

2nd need to chack remote power switch where it is multiple points or 2 points. If there multiple points tracks and some point is not connecting properly due to damages or dust . Need to clean or replace power switch

[@RakishRc]

It's a 3 point power switch. But now I don't think there's any point in spending time to repair the motherboard.

[@gautamsenthilkumar823]

Thank god I was about to use

[@RakishRc]

Glad you haven't 👍

[@sumeshs1280]

You need to examine and restore tracks c44 and r39 and swdio point.maybe there is some connections between . U should try this. By jumper small gauge wire to those tracks .

[@RakishRc]

Yes I did try to re connect the two track separated by damaged SWDIO pad but with that the rf module got very hot and radio wouldn't turn on

[@Rccriatividade]

Esse radio suporta bateria lipo, eu sempre uso no meu 7.4v ele suporta ate 9v

[@meinkanal118]

I wonder wether it is possible to use a 6v bec but still measure the real battery voltage. Is it known where the battery voltage is measured on the pcb?

[@RakishRc]

Yes You can use a 6v or 5V bec but you cannot read the battery voltage then. Not completely sure but it seems either from the power regulator or V bat connection side is where voltage reading is detected.

[@MR_VINIX_]

hi Rakish, is high ampere damage tx?(6v / 2200mAh)

[@rakinrkz9010]

did you full charge the battery every time or only the last time?

[@RakishRc]

I've used fully charged 2s before many times without problem but since the regulator onboard is rated upto 6.8v or so it was always a risk.

[@rakinrkz9010]

same happened to a fs i6x that I got. It was very new. Now I am thinking of re using it by adding an MCU and making a custom transmitter. I also posted few days ago about this in rc groups forum.

[@RakishRc]

@@rakinrkz9010 Sad to hear that. Hope you can replace the MCU and utilise the radio 👍

[@rcaeroplan3909]

My solution, I'm using 2 Li-ion battery 14500 in place of two AA batterie and for the others places one is occuped by 2 serial diodes 1N4004 or equivalent placed in a cylinder with same sise of à AA batterie and the other one is a short circuit also placed in a cylinde size AA. The final voltage max is 8.4V - 1.6V = 6.8V and when the Li-ion are fully discharged 6V - 1.6 = 4.4V.... Very simple !

[@lightlord299]

Hi bro i just tried to do rechargeable battery mod on FS-I6S and i did supply power directly from 2s battery and it 3.3v voltage regulator is gone bad its heating but the voltage regulator data sheets states it can take 2 to 20v and on output gives 3.3v i don't understand what Flysky does to these transmitters i also have and Flysky i4x it works very good with 2s battery mod I've beens uaing it for more than 2 yrs no problem till now

[@przemos7816]

I have burned my i6x with 2s battery as well :/ I bought another used i6x and have replaced the motherboard as my old radio was in better condition.

[@Sunnyfpv1617]

Hii sir i just want to know can i use any elrs module after flashing opentx on it. Does Latest opentx have any bugs. Finally which elrs module should I get to my flysky i6x

[@Sunnyfpv1617]

Please response sir

[@RakishRc]

Yes You can use any elrs module after flashing open tx elrs version. I am not sure if there are any bugs but the firmware is very reliable and stable just like original firmware with many upgrades. You want 900mhz or 2.4ghz elrs module? Choose which band you'd like and then select. I use frsky r9m and r9mx receiver

[@Sunnyfpv1617]

@@RakishRc ok sir thx so final question should I go with any elrs module or get r9m setup. I need good range and long range so which is good r9m Or elrs modules

[@RakishRc]

@@Sunnyfpv1617 so for long range go for 900mhz setup. Frsky R9m has to be flashed with elrs firmware. Get r9m and MX receiver then 👍

[@Sunnyfpv1617]

@@RakishRc ok sir thank you sir for great help

[@RcDude2289]

My fsi6x transmitter power is not on please help. After the alarm automatic off. Any solution?

[@lightlord299]

Bro did you repair it same thing happened to me

[@kanartech]

It works in mine, but do not use rc battery with a higher C rating, you can only use a mobile phone battery

[@did3d523]

use bank power smartphone 5v

[@minisnackhouse]

Use only 3.7 1 cell of lipo with buck coverter and set voltage to 5.6 i have been using this from 1 year all working fine for me

[@CollinBaillie]

That would be a boost converter

[@dhanasekaran1864]

can we use two 1865 lithium ion battery (3.7 v) for power up this same transmitter because I want to make my flysky i6 X rechargeable what are the best ways to prevent that from burning , can i use the rechargeable batteries for it or better Normal AA batteries?( But AA was drained as much as fast )

[@RakishRc]

Anything above 6v is risky affair so better use a voltage regulator is using 2s. May be you can arrange the cells to be easily removable and then charge it externally.

[@dhanasekaran1864]

@@RakishRc Okay Thankyou ✌🏻

[@ayandey3375]

I figured out that the ADC channels do not read anything. I compiled a program to read the ADC inputs. even if I short the ADC input of any pin with 3.3v it would read zero. So in all the power regulator is damaged and the Stm32f072VB processor's ADC channel is damaged due to fluctuation in input voltage and failure of the 6206A regulator

[@ayandey3375]

Same thing happened to me today... I just saw your video yesterday and was thinking about replacing 6206A with AMS117. Its now booting into factory mode... I found that the other regulatior i.e HF_3.3 regulator is okay.. STM32 is flashable. EEPROM is okay.. What to do?

[@lightlord299]

Did you repair it bro is it working

[@lightlord299]

Hi bro i just tried to do rechargeable battery mod on FS-I6S and i did supply power directly from 2s battery and it 3.3v voltage regulator is gone bad its heating but the voltage regulator data sheets states it can take 2 to 20v and on output gives 3.3v i don't understand what Flysky does to these transmitters i also have and Flysky i4x it works very good with 2s battery mod I've beens uaing it for more than 2 yrs no problem till now

[@lightlord299]

6206A 1722/33 vtg regulator was original which is damaged

[@krishnatomar16]

Bro you can change the voltage regulator ic your radio will start working

[@RakishRc]

I tried that but unfortunately it wasn't successful. I got another fsi6x then

[@thehazzaz4181]

i use buck converter to power up my transmitter with my 2s battery I set input voltage to 6v

[@Patsbhau]

👍🏻❤️

[@RakishRc]

Thanks 👍

[@cliffandrews]

Taranis 👍

[@RakishRc]

Which taranis? Qx7?

[@GKCcisco]

You can now make it elrs tx

[@zioeddy3338]

Ciao, io uso 2 lipo con 2 diodi collegati in serie sul positivo ! Ottengo così 6 volt 👍

[@g.p.7880]

Bhai mera same transmitter just abhi kharab hua hai 2s battery use karne se 😭😭😭😭😭😭😭

[@lightlord299]

Did you repair it bro konsa transmitter tha ?

[@akashdeeplakra3583]

😂 nup mistake always use comon sense as it needs low Amps to work u connected 40A lol rip