Vant Batteries
 

I am curious to see if anyone has tried these. The price is good, but how do they perform, and how much capacity do they actually have?
http://thebarnfloor.com/catalog/prod...6#.UQ7gZx3LSn8

I'm leary of these ultra-high "C" ratings. I seriously doubt the battery can live up to those claims. All these cells are made in China, and all China is about is mass production. IF cells were actually as powerful as some manufacturers claim, we'd all be running them.

It's been proven over and over that to obtain output with thise ultra-inflated C ratings is almost impossible given the physical size of the packs.

However, they still may be very good packs, it's just those high C ratings are just too high to be real.

If you try one, please post back and let us know so others may also enjoy a reasonably priced LiPo battery. :sneaky:

I would go with a name brand lipo , with a more practical rating .

http://www.trinityrc.net/shop/index....product_id=379

I know the folks personally, whom run the Barn. I will back them 110%, they are very good people and operate one of the best facilities here in the North East. That said, I've never heard of these batteries so I can't offer an opinion. Although, I did post a link to this thread on theirs, located in the Racing forum, so hopefully one of them can offer more insight. :)

http://www.rctech.net/forum/racing-f...l#post11771521

I have one in my 22t.a 5 minute race leaves the pack at 8volts running a 13.5 motor. Charge it about 5 times a night twice a week. No issues/no problems. The Ir is 6.

I ordered one, should have it by wed. I will put it through a cycle to check its capacity an IR. I will report back....

I'm running their shorty packs in a mid motor 22SCT running a RevTech 17.5 and Tekin RS speedo. So far they've performed admirably (since December) and I charge each packe about 3-4 times per practice night.

I'm running their shorty packs in a mid motor 22SCT running a RevTech 17.5 and Tekin RS speedo. I run on a small indoor carpet track. So far they've performed admirably (since December) and I charge each packe about 3-4 times per practice night. They work, time will tell how reliable they are, but no issues to report so far.

IR is 6? Isn't that very high for Internal Resistance?

Just curious, why would you charge a pack 5 times a night?

1. Show up charge

2. Post practice charge

3. 1st qual charge

4. 2nd qual charge

5. 3rd qual charge.

Sometimes i charge more than that.

That is high IR, my old nano 6600 reads lower than that. You should see those numbers in a good saddle, not a good stick.

My 7200 smc is reading 1.7 & 1.8.
Reedy 6500 comes in at 2.4 & 2.6.

Both with about 15 cycles on them, maybe auto's are older packs... guess I could see those numbers after a year of use.

The low IR race packs from smc are a fantastic deal, 6500 & 7200.

Hey Guys,

Thanks for your questions and inputs. We have been testing these batteries for almost a year now and have had great results, so we decided to begin importing and selling them.

Since we purchase them direct from the factory, the price point is much lower than the name brand packs. A name brand battery will pass from the factory to the manufacturer (Reedy, Trinity) to the supplier (Great Planes, Horizon) to the hobby shop and then to you the consumer. By purchasing directly, we cut out 2 levels of pricing markup. So this is why the batteries are such a bargain.

As for capacity, we have tested many of the batteries and found them to be quite reliable. For example, the 7200mah battery consistently charges from 3.2V per cell to 4.2V per cell at 7150-7300mah.

For power output C-Rating, we have not done any extensive testing due to the fact that we do not know a way to accurately measure this. If anyone has any ideas, please let me know.

But, we have tested them against other battery packs to try to 'feel' the difference in power, if any. We ran three batteries in a Losi SCTE for 4 weekends of racing. The SCTE is equipped with a Tekin RX8 and Novak 4.5 550 motor. The batteries used were a Reedy 6500 65C, a Turnigy NanoTech 6600 65C, and the Vant 6000 80C. The Vant consistently felt more punchy than the Turnigy Nanotech. It also felt equal to the Reedy.

Also keep in mind that the 6000mAh 80C battery has been inspected by and has passed ROAR's LiPo requirements. Another vendor of these battery packs has also had the 4000mAh Shorty pack approved by them as well.

The batteries also come with a great 6-month warranty through us.

Any other comments or findings, please post! We are quite interested in seeing results of these Vant batteries in real use situations.

Kind Regards,
Chris

Thanks Chris for the info, I look forward to trying them out.

You're very welcome :-)

We have also had a handful of reviews on our website for these batteries. They are all real reviews from actual customers :-)

Vant Battery - The Barn Floor - Dirt Cheap RC
http://thebarnfloor.com/catalog/inde...acturers_id=96

+1

From what you've said you're running one battery, correct? That does make a difference, but, most quals are 5 min. (at least where I race) I can easily get both quals in IF they do 3 quals, I can also get the 3rd qual in on one charge.

I would definitely have a full pack for the main, but, all those chargers are going to cut down on the life of your battery.

Having 2 batteries (of like or similar specs) would be a good invesment IMHO. Personally, I take 4 batteries just 'coz I like to play with different ones. And playing is what I'm all about with my RCs.

Very interesting stuff Chris. Wish I had known about these before :P

Do you institute a 2s restriction at Da Barn for 4w Mod SC?
I'm thinking those 3s + Pro4 3300 would be dialed! :sneaky:

Any chance of you getting any 4s or even 6s ( which I prefer to run in 1/8 ) batteries?
Thx for the time, and credit for the av pic too ;)

I can say that they are QUICK to get stuff out in the mail, I ordered on Sunday night, it shipped out Monday morning and is out for delivery today!

I'll post my initial results when I put my first cycle through them.....

I got my pack and did a full charge at 12 amps, then a discharge to 3.2v per cell at 10amps and the battery discharged approximately 6900mah. Not bad at all. After cycling it a few times the IR was on par with my 3 month old revtech 6900mah 100c battery.(It was cool out so the IR was not accurate) Initially, it is defiantly a good pack, but time will tell how fast or slow the cells degrade, but I am satisfied.

Hey Rob,

Generally people run only 2S of course. If 3S on a 3300 is about the same speed, then I don't see it being a huge issue among the racers. The 4600 on 7.4V calculates to about 34000RPM, where the 3300 on 11.1 calculates to about 36000RPM. I agree though that higher voltage is more efficient.

I do plan to get some 4S packs in when spring hits. I don't plan on getting any 6S packs though :-) Sorry.

Great news! Let me know what you find as you use them more.

I bought a 6200mah 2s 60c Vant lipo one thing i like is that the bullet connecters for the hardest fit nice and snug into the lipo . Ive only ran my a few times so its not quite broken in yet so i cant exactly judge it yet.

And my backup charger i had to use is only a 50w and charges to 5.0 amps im waiting for my new charger to come in the mail that goes up to 6amps.

But after a few charges the cells are equaltly balanced same when storeing them . So its a better quality low price lipo :nod:

Well i had about 6 cycles on this lipo and i dont know if its because im geared lowed and my motor runs cool . But man these lipos have some punch no drop off into a 8 min main ! And the cells stay really balanced run after run and the Bullet connecters on the wire hardness are pretty good and tight !

For $45.00 for a 6200mah 60c 2s lipo its
pretty good.

They have lower MAH rating 2s lipos also in them and have good C ratings.

I would take a look at these lipos !

Thank you for the post. I'm glad to know the Vant LiPo Batteries are meeting your racing expectations. :)

What charger are you getting these IR values. I believe you are using a different rating. I have never had a Lipo show an IR rating lower that 3 or 4 on my Hyperion. My Thunder Power and Hyperion packs show anywhere from 3 to 8. My SMC packs show around 15. I think your 1.7 to 1.8 is 17 to 18 on the Hyperion. I know that Auto2 uses the same charger that I do. A rating of 6 on my Hyperion is great. I will be getting a 4s pack to try out myself and will report back.

Picking up 2 Vant Batteries for ROAR Nationals at LCRC. Is there only one of your batteries ROAR approved???

That's great! Yes, only one is currently ROAR Approved.

VAN2S6080 - 7.4V 6000mAh 2S Cell 80C-160C HardCase LiPo Battery Pack ROAR Approved w/ 4mm Bu... - $57.99
http://thebarnfloor.com/catalog/prod...oducts_id=3649

Kind Regards,
Chris

This thread is a bit old, but I figured I would follow up with some info. We are getting some more ROAR Approved packs from Vant soon.

7.4V 4600mah 90C Hard Case Shorty
7.4V 6500mah 90C Hard Case

Chris

Just got mine in the Mail on Tuesday. Ran them last time. Just as good of a pack as anything else i've ran. (revtech, reedy, turnigy, crc). We'll see how long they last, but I'm satisfied with the 2 4000mah shorty packs i Purchased from DirtcheapRc.com.

We have been running Vant batteries for well over 6 months now and not a single issue. We run the shorties in 2wd buggy, and couldn't be happier.

A true testimant that you don't have to spend 100$ to have a great pack.

That's great to hear guys. Thank you for your input and support. We are trying very hard to get the word out about our batteries for the exact same reasons you mention. Price. Performance. Reliability.

Kind Regards,
Chris

It's important to note what type of battery is being commented on.

I purchased a Vant 5000mAh 4s a few weeks ago (11/6/2013), and I'm already having problems with it. The battery has less than ten cycles on it. Cell #1 and cell #2 won't fully charge. They go up to 3.8 volts and that's it. Cell #3 and #4 go up to 4.2 volts. I always balance charge the battery; never straight charge. I run LiPo voltage monitors on my batteries so I know I have not run them down too far. This means the battery poops out prematurely since I have my alarm set at 3.2 volts.

At this time, the jury is still out!

i run a 2S shorty 75C I think in my stock buggy, great pack, no issues

Same pack, same class, no issues so far!

Good results today while waiting for turkey. On my 4s Vant battery, I charged the two cells that were low up to the same as the others using my charger set up for 1s and charged the two cells individually through the balance connector. Had to periodically stop to see if the voltage matched the other cells. Now the battery will fully charge as 4s. Ran three full charge/discharge cycles. Worked as it should. I'm happy.

Note that I'm using a hard case ROAR approved Vant on my quadcopter. This is a new thing for copters. Most people are using soft case LiPos. I'm done damaging batteries when the machine crashes. I'll pay the extra weight penalty to have a battery that lasts!

Moral of the story. Most balance chargers that have a charge connection and a balance connection will charge all cells at the same rate. Some chargers will stop prematurely and not allow a full charge. To "balance" the cells, they discharge a high cell through the balance charger connection (well they are supposed to work that way).

Will be ordering more Vant batteries as needed!

any chance of these becoming roar legal?

I have 2. tryied in 8th scale and couldn't get the runtime, run fine in my 2wd buggy. send a question to vant and no response. :( but no problems run pack after pack. 20min of runtime on a shortie. my sone could run 30 min +

We sell a lot of batteries and this is not unheard of. But it is a rarity. A LiPo battery takes about 4-7 cycles before it will output its full potential. The issue/culprit in this situation seems to be the fact that some of the LiPo cells within your pack are requiring more cycles before they come to life. Good call on charging each cell individually. I am very glad to know that you are having great results with the pack now. Let us know if we can help w/ anything in the future.

And you are correct about the balance charging. Balancing works by discharging the highest cell(s) through the balance leads. But each charger on the market has different tolerances for how long it will attempt to balance before giving up and also what voltage difference constitutes an imbalance. Though I would certainly agree that a voltage difference of 0.40V constitutes an imbalance in my books, each 'chinese' charger may have different tolerance values.

Hi Dave,

I am sorry to hear that you are not getting the run time that you expect from the 4S packs. We've noted about a 12-15 minute run time on the 4S 5000packs in a 1/8 Buggy. This of course varies depending on the track, the gearing, and of course the driver (no disrespect intended :-) If you don't feel you are getting the proper mah rating out of the battery please contact us and let us know so we can take care of you.

Vant does not have any current plans to ROAR approve any 4S packs at this time.

Kind Regards,
Chris

Hy Dave, I was have a similar problem. I suugest you get a LiPo voltage monitor that shows the voltage of each cell (about $3). You might have the same problem I did with a low voltage on one or two cells which causes improper charging. see how I fixed the problem in previous post.
good luck!

I'm running 2 shorties in 8th scale. Or gave it a try. It is close. One pack has a cell that discharges faster. I balance charge everytime. No problems in 2wd buggy. I normally go 10 minutes or so on my 2 pole setup.