Tattu TA300 is an 8 channel 2-4S G-tech charger!
Exciting compact package of 8 channel 2-4S LiPo / 2 Amp max + 1 60W USB-C port!
Thank you Gens Ace Europe for the opportunity to thoroughly test the charger!
For who is it for?
The charger was made for drone soccer where the team needs many small 2-4S packs charged fast at the same time!
Furthermore the charger may serve well in the club meetings / indoor races of small RC models – like cars (1/28 – 1/14) where similar sized packs are used.
Key Features
- ⚡ 8-channel
- 🔌 Plug and play
- 🧠 Automatic Recognition of G-Tech smart batteries
- 💾 Data Record and Storage
- 🛡️ 8-Level Protection
- 📦 Compact and lightweight
- 🧳 Built-in power
- 🔗 Easy plug & unplug
- 📺 IPS display
Specification
About G-Tech Smart Ecosystem
- Plug and Play – Automatically detects battery type and parameters—starts charging instantly with no setup required.
- Smart logging for battery data and health — enabling efficient battery management.
（Note: Supports both G-Tech smart batteries and non-G-Tech batteries — manual setup is required for the latter.）
First try
We connected 7 different LiPo and LiIon battery packs we have lying around the shop. Some Gens Ace had G-tech balance connectors. Charging of 7 different packs was done in quite a swift manner, no need to look into the instructions. Also notable, charging is done only via balance connector, so no need for different main charing wires.
This is how it looked like:
Main input is above 60W USB-C port
Some might search for the port when looking from above if the main plug is connected.
8 channels – G-tech XH 2-4S connectors
Normal LiPo batteries are to be connected from the left side, while G-Tech connectors are no brainer 🙂
The screen – main info
Well it looks like the engineers at Tattu prefered the “Tattu colors” – yellow with white on the black underground.
To be honest, the small screen with the data of 8 channels needs sharp eyesight of untrained eye. You might be looking for quite some time to figure out what is happening and how much are your packs charged to. Here in our opinion software update is needed. Have a good look on the screen again. See channel 3 pack is discharging to storage? Well, it is in the same color as the charging pack!
Pack CH6 is selected. In real life, the there is too much of yellow color, the charing bar is not clearly visible. Here again, the charging bar of green color or even multiple colors is an idea for future updates.
The pack on CH4 is of G-tech, but is not noticable. The Gens Ace S100 / D300 chargers tell you how many minutes there is to fully charged pack. We missed the information here. Also an idea for the future software upate.
This is how it looked like:
The screen – channel info
We are getting used of seeing similar screens in Gens Ace / Tattu ecosystem.
One the top in yellow – charing time, permanent Tattu and optiona G-Tech logo / channel number
Below is the charging current and capacity, below is the pack info LiPo/LiHV and cell number , on the right is the estimated (!) charging percentage. Estimated – since the bar is related to battery voltage. If you have small pack with high internal resistance and you want to charge them for example at 2 Amps, the charing bar / percentage might go very quickly up not reflecting truly charged state. Your information is the capacity (mAh) meter!
Below is the information of the cell voltages in the pack. Here we are also used of getting internal resistance (IR) info. But the TA300 is charging only through the balance cables and IR info is thus not possible!
On the bottom of the screen is the info of input voltage (in our opinion not neccessary!), pack voltage/charging power and internal temperature. On the far right if you have G-tech pack connected it is showing the battery cycles. Specifically this battery has several dozen of cycles on other G-Tech chargers, but it is the first time charging on this charger. So beware!
The screen – adjusting charging current while charging
We are also getting used to this possibility of changing charging current between charging. G-tech packs can only be adjusted to 2C current…
Done!
Fully charged packs will be in green color, storage packs in teal color. OK!
“Problem” when charging high IR / old small capacity (<500 mAh) packs with 2 Amps
Some untrained eye might predict wrong when the voltage of the charged pack is rising very quickly. The CV phase will be very long then… So beware!
3W discharging only!
This means larger (>2 Ah) 4S packs might take some hours to get discharged from fully charged to storage voltage! 4S packs (fully charged 16,8V/17,4V) are discharging at only 0,2 Amps! So it needs ~5 hours to storage voltage.
Verdict
Tattu TA300 is an impressive compact 8+1 channel charger! No need for main charging leads, up to 2 Amp current is enough for smaller <1Ah packs. While it is definately not a potent discharger, G-tech automatic start charging is a big plus when handling 8 packs!
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