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Old 11-10-2016, 10:14 PM   #1
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Default Batteries for Blinky

Hello! I am in search of new batteries. I mainly race 17.5T Blinky with max 4.0 ratio, 21.5T Blinky with no ratio limits and our local hobbyarenas own class, Slow-Mo, where all cars are put on a dyno and made to run 20 kmph/12 mph and as I am a A-final guy I need to run 20 kmph for 20 minutes straight with some punch. I have currently used Gens Ace 6000 70C batteries for Blinky classes and Turnigy Nanotech 7500 batteries for Slow-Mo class.
The batteries should have 6000+ mAh, high C rate and close or under 300g in weight. They should cost 90 max and the shops should be in Europe.
I have looked at the Vampire Racing 6400 100C batteries and Muchmore 6400 110C LGC batteries.
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Old 11-11-2016, 01:22 AM   #2
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You gotta run 330g batts to be fast in blinky
Best ones are 7600 from Pcr or R1
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Old 11-11-2016, 04:02 AM   #3
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Originally Posted by hanulec View Post
You gotta run 330g batts to be fast in blinky
Best ones are 7600 from Pcr or R1
why is this?

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Old 11-11-2016, 04:28 AM   #4
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Originally Posted by hanulec View Post
You gotta run 330g batts to be fast in blinky
Best ones are 7600 from Pcr or R1
Why are the heavier batteries better? A 30g heavier battery means a 60g heavier car, as the car should be balanced. My current car, BD7'15, is near 1400g, 50g overweight, with the Gens Ace 6000, which weights about 310g. I am also not planning to buy all the titanium and CF upgrades to lighten the car.
Another question: Is 1 battery enough to practice or would I need two batteries? Our races are 5 min + warmup 2 min. There's under an hour between races and I am charging with 10A.
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Old 11-11-2016, 04:30 AM   #5
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Best performance requires high capacity to maintain voltage over the run, and low Internal Resistance (IR). Both of these generally improve with increasing battery weight.

Battery IR isn't quite as important for 21.5T as it is for 17.5T, but a lower battery IR will still help.
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Old 11-11-2016, 05:01 AM   #6
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Which stores in Europe sell and/or distripute PCR or R1 Wurks batteries?
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Old 11-11-2016, 05:30 AM   #7
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Originally Posted by thilo-alexander View Post
why is this?

greetings
I think the easiest way to think of it is less drop off.
With the high mah battery you will finish the race at a high voltage than the lower mah battery = more voltage more speed.
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Old 11-11-2016, 05:32 AM   #8
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Originally Posted by YellowClip View Post
Which stores in Europe sell and/or distripute PCR or R1 Wurks batteries?
This is good option also. Team Powers 7800 The actual weight is 334 grams, the listing is wrong. I run these and have had good results.

http://shop.norcalhobbies.com/brands...c-2s-lipo.html
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Old 11-11-2016, 07:38 AM   #9
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Every Lipo mention in this thread is a relabeled IP battery just order directly from Intellect America and save a bunch of $$$ for the same battery


Edit: I thought you were in the US my bad
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Old 11-11-2016, 07:42 AM   #10
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Originally Posted by howardcano View Post
Best performance requires high capacity to maintain voltage over the run, and low Internal Resistance (IR). Both of these generally improve with increasing battery weight.

Battery IR isn't quite as important for 21.5T as it is for 17.5T, but a lower battery IR will still help.
Racers here in FL run 21.5 TC and when paired with the new chemistry Lipo Lipo Batteries win or lose races no matter what binky class you run
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Old 11-11-2016, 08:00 AM   #11
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Originally Posted by godzukihop View Post
I think the easiest way to think of it is less drop off.
With the high mah battery you will finish the race at a high voltage than the lower mah battery = more voltage more speed.
So it's more about capacity, not weight, right?

The mentioned Muchmore 6400mAh does weight 270g, so I would assume the 60g advantage should more than compensate for the slightly lower capacity. Right now on carpet I am recharging just under 2000mah after each round (5 min + warmup). I am considering these to replace my LRP 5800 stock spec. I am curious though what the difference to their Max Punch version is, which is heavier with 6200mah. Anybody have an idea?
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Old 11-11-2016, 08:00 AM   #12
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Originally Posted by dawgmeat View Post
Every Lipo mention in this thread is a relabeled IP battery just order directly from Intellect America and save a bunch of $$$ for the same battery


Edit: I thought you were in the US my bad
Intellect America doesn't make batteries. They buy them from Asia like everyone else. Batteries differ from batch to batch and manufacturer to manufacturer. Lumping them all together, while convenient, isn't correct at all. There's not many actual battery manufacturers, but there is a clear difference in the batch purchased and the factory it's made in.
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Old 11-11-2016, 08:11 AM   #13
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So it's more about capacity, not weight, right?
There is actually a little bit more to it than that, but it's a decent generalization. Really what you are looking for is battery curve first. Not all batteries drain the same way. Some can hold voltage longer than others. It can be a difference of running for a full 6 mins @7.8V (under load) or running @7.8V for the first 4 minutes and 7.4 volts for the last two. But the only way you'll truly know the curve is by testing and running them.

A typical lipo has a curve that isn't constant, meaning it's curve flattens out for a while and provides that constant power for a while then starts to fall off. Finding a good battery means you'll be looking for the battery that runs at a high "flattened out" curve for the entire duration of your run.

Keep in mind, not all branded batteries are the same from batch to batch as well. Buy a battery in July that performs really well, then purchase another in April and it's curve can be completely different because it was purchased from a different batch from your first battery.
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Old 11-11-2016, 08:31 AM   #14
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Originally Posted by Carnage9270 View Post
Intellect America doesn't make batteries. They buy them from Asia like everyone else. Batteries differ from batch to batch and manufacturer to manufacturer. Lumping them all together, while convenient, isn't correct at all. There's not many actual battery manufacturers, but there is a clear difference in the batch purchased and the factory it's made in.
http://www.ip-battery.com/

Intellect America is a division within IP, If buying in the U.S. your Reedy, Orca Lipo came from Intellect America via IP

Last edited by dawgmeat; 11-11-2016 at 09:03 AM.
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Old 11-11-2016, 08:37 AM   #15
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http://www.racing-cars.com/sp/catego...Batteries.html
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