Is anyone selling Tattu packs in the US yet?

[Bartman]

jfro, i don't disagree, battery prices should be similar across similar quality packs. in my book Zippy's and Turnigy blue packs are similar and Nano-Tech's/Gens-Ace./MS are a step higher but similar to each other. why GensAce/Tattu packs are so expensive is a mystery that some will say is based on quality but GensAce was never a higher quality pack than most of the other brands. i think it's a lot of marketing at play so in time I"m guessing Tattu's will have to come down a bit.

With MaxAmps there's a local company offering a warranty so that helps to justify their prices. They're also providing quality control and supervision of what's being delivered to their customers which comes at a cost.

Bart

 

[fltundra]

My mileage hasn't varied much either. But....

I don't have enough experience with different brands of batteries. However, I bought 6 Gens Ace Hardcovers's 48 / 5000 mah (2 at a time 3 months last year). I flew the first 4 pretty hard last year and 1 battery (#4 which means the 2nd batch I bought), has 1 cell which is going south on me. Another I thought was, but not so sure anymore. I have cut my flight times down on all of them and fly them on a lighter quad now so they don't warm up at all. Got longer flight times out of them than the 2 5000 mah 4s Turnigy's I bought and they didn't heat up as much.

When I bought batteries last year, I was looking for quality and value. I tried 2 Turnigy's, choosing them as my base for the lower end of the spectrum. Then tried the Gens Ace as a good quality mid priced solution. My experience is the Gens Ace were a better battery (higher c rating) and not much higher in price.

It's mentioned that they are targeting the needs of MR's with higher mah and lower C ratings. Turnigy/Nanotech/ Multitech has ventured into the lower C rating/higher mah battery with the Multitech and their marketing suggests it's more cost effective to lower the C rating. Their 10,000 mah 10c (20c burst) battery cost less than their 8,000 25c battery.
My point is that, I would be very surprised if the costs to produce the Tattu line is that much higher than other manufacturers. They are all using the same if not using similar ingredients. equipment, and processes. Quality control and standards may be different, but not sure there is much else that is significantly difference in costs.

As much as I'd like to try some Tattu's, I fly 2 batteries on my higher price rig, I do not worry about battery failure. Since I am 6 for 6 having good luck on what I'm now using, I'll continue to fly and not drive them as hard as I used (quitting at 3.55 to 3.6v per cell instead of 3.35 to 3.4v) to and see how long these last. So far, I can't find a reason to pay such a large premium.

tattu	10000	6s	25c	$256.00	39.1	mah /per dollar
nano	8000	6s	25c	$112.00	71.4	mah /per dollar
multistar	10000	6s	10c	$98.00	102.0	mah /per dollar

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I'm not sure I should have posted this here, but it's a forum and we are talking batteries, so I hope it's ok.

After you unplug , if the voltages don't rise back to at least 3.68- 3.7volt at the end of your flight. Your drawing them down to far.

 

[Bartman]

GensAce sent me two Tattu packs earlier this year for a product review but problems with the packs kep me from being able to complete the review. They weren't quality related problems, just procedural problems that made the packs inappropriate for the review.

Given what's being discussed I just went and cut them open to see how they're made. The cells are unmarked so I'm not able to verify their ratings but the packs are assembled very well including two aluminum plates under the shrink wrap protecting the outer cells. Is this feature standard on the packs that you guys have bought already? On the MS packs? I was hoping to see that the packs were marked with their ratings so I could get a hint as to whether or not they performed as marked based on flying and charging I've done with them but they're not so I can't.

Each cell has a white sticker on it with a handwritten number but there's no way to know what it means. The cells also each have individual bar codes on them which is probably an inventory/batch tracking number for the cells. I'd buy two of these packs from a dealer's stock in order to make the review possible but the size isn't available anywhere. They are 25C 6000mah and 35C 6000mah, both are 4S.

 

[jfro]

After you unplug , if the voltages don't rise back to at least 3.68- 3.7volt at the end of your flight. Your drawing them down to far.

They do come back up. Many times, they are high enough, I don't charge them back up for storage if they are around 3.78 or above which happens when I land early.

What's the max I should be putting back in mah wise on a 8000 6s battery?

I drove my 4s 5000 25c and 35c batteries much harder last year. They seem to be in pretty good shape overall except for one with a weak cell. The others though, are pretty decent, although the ir rating isn't as consistent as the 6s's that are being either babied or cared for a bit better.

 

[Ronan]

GensAce sent me two Tattu packs earlier this year for a product review but problems with the packs kep me from being able to complete the review. They weren't quality related problems, just procedural problems that made the packs inappropriate for the review.

Given what's being discussed I just went and cut them open to see how they're made. The cells are unmarked so I'm not able to verify their ratings but the packs are assembled very well including two aluminum plates under the shrink wrap protecting the outer cells. Is this feature standard on the packs that you guys have bought already? On the MS packs? I was hoping to see that the packs were marked with their ratings so I could get a hint as to whether or not they performed as marked based on flying and charging I've done with them but they're not so I can't.

Each cell has a white sticker on it with a handwritten number but there's no way to know what it means. The cells also each have individual bar codes on them which is probably an inventory/batch tracking number for the cells. I'd buy two of these packs from a dealer's stock in order to make the review possible but the size isn't available anywhere. They are 25C 6000mah and 35C 6000mah, both are 4S.

As soon as my Tattu's arrive, i'll take a look and reply here.

Right now everything is delayed due to some nasty weather in Kentucky apparently. Got 3 packages delayed because of this...

 

[fltundra]

What's the max I should be putting back in mah wise on a 8000 6s battery?

6400-6600mah