Win Max Lipos Any Good?

[Drax21]

where did you get these from?

A member on a forum called Oople but you can get them on ebay and I have been told that the sellers will write down costs on the packet if you ask them to save you paying customs fees.

[Mattwarner]

where did you get these from?

[Drax21]

Have tested batteries since, still a little out on my stinger and cg but got 45MPH on the Winmax pack
tested against a Nano-Tech pack and the Nano-Tech pack was the better of the 2.
Winmax is a 30c though and Turnigy Nanos are 35c.

Winmax also sell 50-100c versions which have thicker wire gauge. I want one!
Overall the pack is good quality 8/10. Cells have very low resistance.
Balance charged perfectly 3 times now all 4.20 on a ECO 8 charger

[Drax21]

Difference in weight between a Turnigy and WinMax pack.

Turnigy 4s 5000mah 30-40c = 586grams Size: L 14.5 x W 5 x H 3.5cm
WinMax 4s 5200mah 30-60c = 534grams Size: L 14 x W 4.2 x H 4.2cm

Think this shows that the Turnigy pack has accurate mah whereas the winmax size has been exaggerated.

[Drax21]

Put the pack on storage charge all cells at 3.86

[Drax21]

Testing

So here are my results. Didn't get to test out all batteries today and boat has a few major tuning issues to work out but I have some results.

I ran a:
Powerplus(Flightpower cheap copy) 3300mah 25-45c 4s
Turnigy 5000mah 30-40c 4s
Winmax 5200mah 30-60c 4s

Powerplus battery results as expected

Balancing -Took long Didn't cells were 4.20 4.15 4.13 4.16 Internal resistance B grade
Run time -2 mins
Temps -36C very warm-hot
Max Speed -Stinger error (new set-up) 30MPH

Turnigy Battery
Balancing -Took long 45mins at 7amps but 4.20 4.19 4.18 4.20
Run Time -5.30 mins
Temps -24C Good
Max Speed -35MPH

Winmax Battery

Balancing -Took 15mins at 7amps 4.20 4.20 4.20 4.20 perfect!
Run Time -5 mins (I believe its more like a 4700mah battery)
Temps -26C Good
Max Speed -36MPH

This testing was a bit of a fail because of the freezing cold winds and bad set-up but at least this gives you some results.
Winmax produced the C discharge rating, balanced perfectly but MAH is not as stated. Pack has better quality control than Turnigy and has met all the same standards as Turnigy. I will be messing with my boat set-up tonight and will be retesting. Overall I am happy with the Winmax pack. Just about to re balance charge now. Will give you the results.

[Drax21]

The standard Turnigy pack takes a lot longer to charge at the same amps. I was quite amazed at the speed the Winmax was done. Will give balancing figures later.
WinMax =15-20mins
Turnigy = 45mins

[Drax21]

DSC_1680.jpgDSC_1681.jpgDSC_1683.jpg

[Drax21]

Win-MAX Nano Platinum 4s 5200mah 30-60c First impressions

Good Points
Battery came in its own box, pack is not puffed, got an attractive packaging with some certificates on the pack to say it has passed standards. All cells look good. Balance wires made of PVC.
All cells were at 3.93 exactly!

Bad points
Wires are only 12 AWG. Very thin. Pack feels lighter(will confirm later) than my Turnigy 4s 5000mah 30-40c batt. All wires are very short from new. 3 inches on the Pos +Neg. 1&3/4 on the balance wires.


Battery is balance charging now at 7amps. Up to 16.70 now. Will be running in my cyber storm if weather stays dry today! comparing against a Nano tech pack and a Powerplus pack. Here are some pictures.

DSC_1675.jpgDSC_1676.jpgDSC_1677.jpgDSC_1678.jpgDSC_1679.jpg

[Drax21]

Pack didn't arrive today. The man who sold them to me just sent me a PM saying he has been away and got back to late today to post it. So he said he will make sure tomorrow.....
So you and I will have to wait to the weekend.

Will be testing the packs on

Balancing
Run time
Temps
Max Speed

currently don't have an eagle tree system but I will also be running a Nano-Tech pack and a Turnigy standard pack to compare against. I even have a Powerplus pack (cheaper copy of flightpower)
Have spoken to another happy owner of these Winmax batteries today. He said "They give the same performance as my Turnigy's"

So I'm getting my hopes up.

[Drax21]

Turnigy 5000mAh 4S 20C Lipo Pack 536grams
same weight as a winmax 5200mAh 4s 30-60c pack 536grams

so that would = the winmax pack will give 20c not 30 the 60c I doubt.

[Drax21]

Those TRANSMETIC batteries are total junk. I got suckered into a couple of them on fleabay. Don't buy 'em! Waste of money regardless of how cheap. They died after about 6 cycles!

Thing is the WinMax ain't that cheap, costs more than Turnigy. The 5200mah 4s is normally $70 with shipping. If the batteries turn out to be absolute rubbish, my review will go on every forum I'm on. That's about 10. If its good. I will do the same and share the news. Here is to hoping!

[Drax21]

If a battery is lighter, that's a pretty good indication that they're blowing smoke up your you know what. It is the DENSITY in the battery (the denser, the heavier) that gives you the high C ratings. I would suspect the lighter pack doesn't really produce what they advertise it will.

Yes this is what I was thinking.

[sailr]

Those TRANSMETIC batteries are total junk. I got suckered into a couple of them on fleabay. Don't buy 'em! Waste of money regardless of how cheap. They died after about 6 cycles!

Check out this link, not Winmax but a LeaderHobby lipo review.

http://neptronix.org/posts/dont_buy_unknown_chinese_batteries.html

I happened to come across LeaderHobby and Winmax yesterday and was looking for reviews just as you are. I have not found many positves about any lipos LH sell, RCGroups has a couple of threads on the subject as well.

The 6S 5200 50-100C are just too good to be true for under $80.

[sailr]

If a battery is lighter, that's a pretty good indication that they're blowing smoke up your you know what. It is the DENSITY in the battery (the denser, the heavier) that gives you the high C ratings. I would suspect the lighter pack doesn't really produce what they advertise it will.

I have bought one off a member on another forum. He uses the winmax 4s batteries and he said he gets good run times and he is very happy with the power. He even uses them in competitions and has won a few car races with them.
He bought a 5200mah instead of a 4400 one by mistake so sold me the 5200 battery. If you don't want to take the risk. Let me try out this battery in my boat first. Will let you know if its any good.
I have noticed that a Turnigy Nano-Tech 5000mah 35-70c is about 100grams heavier than a WinMax Nano-Platinum 5200mah 30-60c.