The Tattu 2S 2500mAh LiPo battery is designed to be used on Fatshark FPV goggles. In this review we will take a close look and test its performance.
I have been using a small 2S 1300mah Lipo battery to power my Fatshark Dominator FPV Goggles. Every charge gives me two and a half hours of power which is more than enough for a day of flying and I am quite happy with it.
But the performance has gone down significantly over the years so I decided to look for a battery replacement. The Tattu 2500mah 2S seemed to be a good option.
You can buy the Tattu 2S 2500mah LiPo from
- AliExpress: https://s.click.aliexpress.com/e/_Dm0lp9f
- Amazon: https://amzn.to/48AreDY
- GetFPV: https://oscarliang.com/product-e7my
Close Look at the Tattu 2S 2500mah
The Tattu 2S 2500mah battery has a DC3.5mm barrel connector as well as a 2S balance lead. This is compatible with all Fatshark FPV Goggles.
Further Reading: Take a look at our FPV Goggles buying guide.
The battery pack fits into the standard head strap perfectly.
On top of the battery there is a push button, and an LED indicator for power level: red = low, yellow = medium, green = high. This can be a useful feature, for example, to quickly check whether you need to charge your battery before leaving the house with your quad.
On the left in the photo below, it’s the Turnigy 2S 1300mAh LiPo battery I have been using in my Goggles for many years. The Tattu 2S 2500mAh LiPo battery is slightly larger than the Turnigy but the Tattu has nearly double the capacity according to spec, and it weighs just 29 grams heavier (101g vs 72g).
Performance Testing
Let’s check how long this Tattu 2500mah battery can power my goggles.
I am using the Dominator V2 with Pro58 diversity module, with a fully charged battery, it took 4 hours and 50 minutes until the voltage dropped to 3.5V per cell. That’s pushing 5 hours, very impressive! :)
Comparing to some other batteries I have tested on the same pair of goggles in the past:
- Original Fatshark 2S 1000mAh: 50 minutes
- Turnigy 2S 1300mAh: 2 hours and 38 minutes
- Hyperion HvLi 2S 1300mAh: 2 hours and 53 minutes
This also confirms the capacity of the pack to be correct.
When checking the internal resistance of the battery, one cell is 6.1mΩ while the other is 20.2mΩ. However, I don’t think the inconsistency in IR is going to cause any significant issues in the usage of the battery for low power applications, i.e. for our Goggles, so I wouldn’t worry about it.
Charging Goggle Batteries
I don’t know how everyone charges their goggles’ batteries, but for me I balance-charge them like a normal 2S battery by using this simple DIY adapter (link to tutorial).
14 comments
i got the tattu 2500 fatshark lipo and started using it with fatshark HD3s. right after first day i had power cuts whenever i moved the battery slightly. the moving of the barrel connector would result in true-D receiver loosing power, and goggles displaying black screen.
i cut off the barrel connector from the fatshark battery case and installed it to the tattu, since the fatshark barrel fits tighter and doesnt loose contact when moving around. hope this helps someone.
I have this battery with four leds and drained it down to far,charged back to full however no power coming from the barrel connector just balance plug only. Is there a way to restore this?
Are the tattu Lipo 2500 better than the 18650 lithium ion fatshark batter holder version ? Which do you prefer and why.
Check out my review here. This might answer your question
I use this to power my QX7. It’s easier to charge and has a larger capacity than most of the LiFe packs I’ve seen. Very happy with the product
I’ve been using some Quanum 1500mAh FPV Googles battery sold on Hobbyking which also have a barrel connector, they weight 67grams
I’ve had this battery for almost a year…not so new. I think the cells themselves are great, but I’ve had issues with the wires breaking. I eventually had to unwrap and solder new wires! I was not interested in doing this without being forced. So I’m kinda on he fence about suggesting these. I might be harder on batteries so maybe my issues are limited?
I know the battery that come with Fatsharks say to not balance charge them, so how is it that these can be balance charged? That would be a definite plus!
The original fatshark battery does not come with an actual balance lead which is why they say do not balance charge.
This new Tattu battery however has the actual balance lead necessary to balance charge.
The Stock Fatshark battery has internal circuit that balances the cells for you automatically.
The Tattu 2500mAh is just a raw LiPo battery.
Good info, there are various 3D printable end caps that offer good protection as well as a bit of a contour to hold them more securely in the headset. They work as advertised and still allow access to the LED indicator.
thingiverse.com/thing:2230343 (remember to support the designer)
i have been mounting the battery directly in the headstrap without any problems so far :) Anyway thanks for the link :)
Hi Oscar, how would it compare to the same mah 18650 batteries.
Search for “18650 battery” on my blog.
that’s what i am going to try next :) result should come out in a week’s time.