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Old Jul 16, 2014, 10:34 PM
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Anyone tried these new multistar batteries yet?

Has anyone had the chance to order and test these new multistar (longer flight time ) batteries for multirotors?
http://www.hobbyking.com/hobbyking/s...utm_source=EDM
The price seems decent, the Mah is nice for the weight reduction, the physical size is a little smaller for the same Mah battery, but they state 10c/20c.
I am curious at 10c how long they will last?
Thank you for any info you may have.
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Last edited by donandtheresa; Jul 17, 2014 at 08:14 PM. Reason: Change title
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Old Jul 16, 2014, 11:08 PM
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I think those just came out in the last 24 hours so unlikely anyone has them yet. Good that HK is coming out with so many lipo options. IMO what they really need is a super premium battery in their line-up to compete with the high-quality established name brands.
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Old Jul 16, 2014, 11:48 PM
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Originally Posted by nighthawk0077 View Post
IMO what they really need is a super premium battery in their line-up to compete with the high-quality established name brands.
Surely that's the Nanotech A-spec, which they claim to out perform all other batteries.
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Old Jul 17, 2014, 05:01 AM
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Only 2C charge rate - no good for me!
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Old Jul 17, 2014, 07:06 AM
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Originally Posted by donandtheresa View Post
I am curious at 10c how long they will last?
If you don't overdraw them and treat them right I actually expect they will last longer then a higher C rated battery. I've heard on several occasions from people that the previous generation low C rated lipos lasted longer then the high C rated current generation.

The 2C charge rate is a bummer but expected. How fast you can put in has always been tied to how fast you can pull out. It's gone up as C ratings have. Take the C rating down and down goes the charging rate too. But it's not like 2C is too painfully slow, heck of a lot better then 1C.

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Originally Posted by nighthawk0077 View Post
IMO what they really need is a super premium battery in their line-up to compete with the high-quality established name brands.
Just curious who do you consider the high-quality established name brands?
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Old Jul 17, 2014, 08:06 AM
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Only 2C charge rate - no good for me!
The 20c blue zippy batteries say the same but I haven't had a problem with 3-3.5c charge rates yet. Though perhaps 2c is a more honest rating for these lower discharge batteries.

I'd certainly be interested in buying one. My run times are already 8-10 minutes so an extra 30% capacity would get me longer run times and even less C rate demand that these batteries should easily handle.
I am just crossing my fingers that lower C rate doesn't mean lower quality.
Hopefully they make it into local warehouses quickly.
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Old Jul 17, 2014, 08:24 AM
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I wouldn't worry that lower C rate means lower quality. The whole point of the line is lower C rate means lower weight. Just look at the difference.

Turnigy Nanotech 4s4000 25C/50C - 433g
Turnigy 'Blue' 4s4000 20C/30C - 437g
Multistar 4s4000 10C/20C - 320g

Guessing it will be a good month before they make it to the USA warehouse though. But hey they are lighter so international shipping will be cheaper right?
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Old Jul 17, 2014, 08:30 AM
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lol, not sure if the international shipping would be cheaper for a lipo. I will probably give it a try next time I order a battery. Maybe one more question. I have been doing a lot of reading on the c rating on RCgroups and few other forums. It seems to be the common thought that if it were a 5000 Mah with a 10c rating then it could handle 50 amp draws. Does this sound correct to you guys?
Thanks for your responses.
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Old Jul 17, 2014, 09:02 AM
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Sorry I meant international shipping would be cheaper then it would be for a different battery of the same capacity. Obviously not cheaper then ordering domestically.

Yes that is how C ratings work in theory but not in practice. Lots of manufacturers inflate their numbers. A 30C from one brand may perform better then a 60C from another. And if for example if a 30C will handle the amps you will still get better punch from a 45C. The higher the C rating the less the voltage will sag under load. Then since your volts will be higher your power (watts) will be higher.
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Old Jul 17, 2014, 12:31 PM
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Originally Posted by JetPlaneFlyer View Post
Surely that's the Nanotech A-spec, which they claim to out perform all other batteries.
Aspec are a lot better than anything else they sell, miles above regular nanotechs, but mine has puffed slightly after 30 cycles and a friends 6S 4000 has swelled quite badly. I would like to see better, and even more options in this top bracket.
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Old Jul 17, 2014, 01:59 PM
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Originally Posted by CerealKiller159 View Post
The 20c blue zippy batteries say the same but I haven't had a problem with 3-3.5c charge rates yet. Though perhaps 2c is a more honest rating for these lower discharge batteries.

I'd certainly be interested in buying one. My run times are already 8-10 minutes so an extra 30% capacity would get me longer run times and even less C rate demand that these batteries should easily handle.
I am just crossing my fingers that lower C rate doesn't mean lower quality.
Hopefully they make it into local warehouses quickly.
It's a tradeoff between charge rate and cycle life. You probably won't ruin a battery by charging it at a higher than spec rate but it will degrade more quickly. I usually charge my packs at 1-1.5C unless I'm in a hurry and then I go to 2C. Really though the decrease in life may be negligible if you figure that even 100 cycles is a LOT of flying assuming one has multiple packs and doesn't go out every day all year round.
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Old Jul 17, 2014, 07:43 PM
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Might want to put the word Multistar in the title so this could become the Multistar thread. As it sits right now it's pretty vague and most people might skip over it.
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Old Jul 17, 2014, 08:14 PM
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Thank you Jimmy, did as suggested
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Old Jul 18, 2014, 08:48 AM
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I hope that they come out with a higher C version soon with a higher charge rate. 3C charge is the minimum that I would ever consider purchasing.

Also it's not in the US warehouse?

.
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Old Jul 18, 2014, 09:31 AM
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I hope that they come out with a higher C version soon with a higher charge rate. 3C charge is the minimum that I would ever consider purchasing.

Also it's not in the US warehouse?
The whole point of the line appears to be low C rating and low weight. If you want a higher C rating why wouldn't you simply buy other currently available batteries?

As for US warehouse I don't think I've ever seen HK announce a new product and actually have it in the US warehouse at the time of announcement. The remote warehouses have always lagged behind.
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