Taranis X9D-Plus LiPo Battery Upgrade

by Oscar

Looking to upgrade the battery in the Taranis X9D and get longer battery life? Check out this 2S 3000mAh LiPo battery designed specifically for the Taranis.

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Check out this article for more Taranis X9D hacks, tutorials and tips.

Where to Buy?

What’s Good about this LiPo?

The stock battery is a Ni-MH 7.2V 2000mAh battery, while this upgrade battery is a 2-cell 3000mAh LiPo. In theory it should give you a 50% boost in battery life. However when I ran tests to confirm the capacity (charging it from 3.4V per cell to 4.2V), I only got around 2500mAh, so the stated 3000mAh seems overstated.

Check out this guide to learn about the basics of LiPo battery.

This 2S LiPo is designed for the Taranis X9D (not compatible with QX7), it fits in the battery bay perfectly. It might also work in some other radios, as long as the voltage and dimension are supported :)

The physical size of the battery is 95x27x26mm.

Despite having a larger capacity, it’s also much lighter than the original battery (118g vs. 167g). With this LiPo installed, the radio feels much better in the hands.

I’ve been using the stock Mi-MH battery for over 4 years, it’s time for a new battery anyway :) So this LiPo seemed to be a good candidate.

What’s Not So Good…

Because it’s a LiPo battery, you need to “balance charge” it, and you cannot use the internal charger. That means you would have to take the battery out of the Taranis for charging. But given the longer run time, you probably won’t have to charge it as often.

If you don’t know what “balance charge” means check out my LiPo Charger Guide.

How about 3S Battery?

I thought about getting a 3S LiPo, but when you flash your receivers via the Taranis, you can fry them with the higher voltage. Therefore you’d have to power the receiver separately which isn’t convenient at all. So 2S makes more sense to me.

How about 18650 Battery?

Yes, It’s possible to use 18650 Li-Ion batteries too in the Taranis  X9D.

Setting Up

Check the voltage of your pack before connecting – voltage should be around 7.6V. You might want to charge it first :)

The LiPo Battery connects to the radio by the balance lead.

Go to the Radio Setup page by holding down the menu button for 3 seconds, and set “Battery Meter Range” to something like 7.0V to 8.4V.

Finally calibrate the battery sensor under “Battery Calibration” against a multimeter for more precise reading.

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daniele 24th March 2020 - 7:42 pm

I’m using a taranis 9xd also a sim joystick and i m wondering if when i use it in joystick mode with a lipo 2s can i damage the battery.

Roman 19th February 2020 - 11:22 am


I use a taranis 3s 2650mAh battery – lasts incredibly long.

Emre 16th December 2019 - 10:27 am

Can we use 25C battery to power up Taranis XD 9 Plus SE instead of 5C (2S 3000mAH 7.4V) ?
How may effect the power system ?


Oscar 21st December 2019 - 4:44 am

Yea that’s totally fine. It won’t affect the power system.

Jason A Jackson 16th December 2019 - 2:49 am

Oscar. I have many 2.7V 2300 Lipos laying around. Would it be worth it to use these instead of actually going out and buying a 3000 2.7 lipo?

Oscar 21st December 2019 - 4:43 am

you mean 3.7V? 1S Lipo?
You will need two of them, connect them in series, and check if the shape fits the Taranis compartment. If that checks out then you can.

MIke 27th August 2019 - 2:04 am

Thanks Oscar. Just received a X7 and have a lipo battery. Just confirming what you said above, that it’s ok to leave in the TX and charge every few weeks. I don’t need to remove it after every use. Correct?

Thanks in advance and sorry for double checking.

Chris P 1st April 2019 - 10:21 am

I’m using the Thunder Power 2600mah 2s lipo and running the TBS Crossfire module on my X9D.
It definitely provides power needed for the power hungry FrSky R9 or TBS CRSF modules.
Just remember that under no circumstances should you use the wall charger you received with the Taranis X9D to charge lipos.
Doing that may result in destruction of your X9D or worst case scenario burning down a house or charging station.

Romeo 9th January 2019 - 11:32 pm

Im using 2x 18500 cells in my X9D, they weight around 70gr and fit nicely.

Oscar 10th January 2019 - 4:04 pm

That’s on my to do list, just trying different options :)

Chris C 9th January 2019 - 4:19 pm

I have a QX7 and I’m sick of replacing the AA batteries. Do you have a recommended lipo battery that fits the QX7?

Oscar 10th January 2019 - 4:03 pm

Maybe just use two high capacity 18650 Li-Ion batteries in there? They should fit well.

Mike 9th January 2019 - 12:29 am

Of course it appears now. Tried refreshing the page numerous times today, went back to the article link to start from scratch, nothing. The moment I sent that last one my first message appeared.
My apologies
Disregard previous message.

Mike 9th January 2019 - 12:25 am

Well I guess commenting was a waste of my time. Thought perhaps something had malfunctioned, tried to comment again. Was informed that message was a duplicate.
I’ll continue to enjoy all of your posts and videos, but will never attempt to comment again.

Oscar 9th January 2019 - 12:52 am

New comments need approval from myself before they are made public.

Robim 8th January 2019 - 3:00 pm

Do you have to put in storage voltage after every flighting session?

Oscar 10th January 2019 - 3:46 pm

No it’s okay to leave it charged for even a few weeks.
I’d only put it in storage charge if I am going away on holiday.

Mike 8th January 2019 - 2:30 pm

Your timing couldn’t have been better for this one Oscar. Was just thinking of upgrading my battery a few days ago.
I’m also still on stock battery, but my Taranis came with an 800mah Ni-MH. All part of being an early adopter I guess. Had my Taranis w/X8R pre-ordered back in 2013, for considerably less than the Taranis Plus(without Rx) is going for now.
Still rocking (pre-ordered)Fatshark HD1 as well, but that’s a story for another day.

Oscar 10th January 2019 - 3:45 pm

Wow… You might be looking after your gear really well that they are still working after all these years :D
I don’t know how you survived on 800mAh :D With 2000mAh I almost always have to charge it every two sessions.

chiron 8th January 2019 - 2:18 pm

I have put 2 x 18650 VTC6- 3120mAh batteries inside the X9D. I can balance charge it in the field and even power the Crossfire modul with it when I need more than 500mW.

Dan 8th January 2019 - 6:34 am

Which font do you have on your radio in the picture? It’s so much more legible than the stock font.

Oscar 10th January 2019 - 3:28 pm

it’s the SQT5 Font.
it’s an option you can check when flashing OpenTX: https://oscarliang.com/flash-opentx-firmware-taranis/

Logan 8th January 2019 - 2:08 am

Ive been using the thunderpowerrc lipo for the x9d, and it’s been charging back up at the rates capacity. Cant recomend it enough. thunderpowerrc.com/FPV-BATTERIES/FPV-Adrenaline/TP2600-2SATX