This is one of the most talked about packs out there. When doing my initial testing I got more requests to test this one than any other pack. There is definitely a lot of interest in these. They look great and have a strong advertising push behind them. They also have an innovative (gimmicky?) aluminum plate to protect the cells in a crash (or hide puffing).
Do they live up to the hype? In short, no. Read on to learn why.
Tattu is the sister brand of Gens Ace. Gens Ace has a fairly solid reputation in the battery business. Tattu focuses on the multirotor market and produces higher energy density packs than Gens Ace. Both are the house brand of Lipo Factory Grepow.
Tattu is the sister brand of Gens Ace. It is more focused on Drones/Multirotors/UAV battery pack and designed with high energy density and high discharge rate cells.http://www.genstattu.com/about-us
These same cells are rebranded by others and sold under a few different names. Pulse and Glacier are two of them. There is some debate about who gets the best cells, or if they are different at all. However they all come from the same factory, that much is certain.
Here are the basic specs for the Tattu 3S 1300mAh 75C pack:
- Pack IR: 24.45mOhm
- Cell IR: 6.74, 7.07, 6.72 (20.53mOhm total)
- Safe/effective C rating: 25C (33A continuous)
- Weight: 120g
- Cost: $25
You can read more about my testing and data collection process here.
If you have read some of my other reviews you will see these are good, but not great results. What does the test show?
27A Discharge Test
I ran several trials of my 27A discharge and averaged the results. The data was very close between the trials, differing only by just 0.02-0.03V in the first 25 seconds, then were identical or just 0.01V different for the remainder of the test. The data summary:
- Maintained 3.60V/Cell or more through 588mAh (compared to 1,000mAh for the top performing SMC)
- 11.21V average voltage over first 50% of test
- 10.94V average through the full 1050mAh
- 132F temperature at 1050mAh discharge
- 10.54V at 1050mAh discharge
Here you can see the discharge curve compared to some of the others I've tested.
As you can see, it does not perform poorly, but it does not perform as you would expect a 75C pack to perform. All but the lowly Lumenier 35C (a real dud) our perform it.
Pros and Cons
- They look great!
- The aluminum plate can offer some crash protection and heat dissipation.
- Good resale value
- They are expensive
- They perform as good as a pack costing nearly half as much.
- They perform below packs that cost $5-10 less.
- The aluminum plate adds weight and will bend in a crash, putting constant pressure/force on the cell. That could be more dangerous than helpful. (Dinogy uses a G10 plate that won't bend so it offers better protection)
- The heavy gauge wires add excess weight. These packs can't produce the Amps needed by these 12AWG wires.
- Most of all...they are no where near a 75C pack!
For all the hype and the cost of these packs they do not perform as you would expect. For the most value the Turnigy/Nanotech is still the best bet. For the most performance with very good value the SMC and Bonka still sit at the top.
Side note: It could be interpolated that both Pulse and Glacier would perform the same. Based on testing I've seen that would be a safe assumption. However it is just that...an assumption. Tattu may not be the best cells Grepow makes. They could sell the best ones to Pulse or Glacier. I'm inclined to think they don't do any QC like that and they all have their own lot to lot variation in terms of quality.