DN 20C lipo??

[Mojo_72]

HI,

Just wondering any feedback of the DN 20C lipo selling at JH.

[Mojo_72]

Any user yet?? I heard it is better than EVO packs.

[mathsinstrument]

better? How do u define better?

I've never used them before as I'm a flightpower user.... Thinking of changing if to the more competitive priced DN if i bloat another FP evo....

[plug&fly]

What?

You mean you have bloated one already? I have ran the DN 1550 with a current draw of 15 amps for about 6 minutes continuously and it came down just warm.

[mathsinstrument]

You mean you have bloated one already? I have ran the DN 1550 with a current draw of 15 amps for about 6 minutes continuously and it came down just warm.

Yea.... The bloated one was due to overdraw. I was having so much fun that i forgot i already exceeded the allowed flight time. The bloated one was a 3s1p 2150.

At 15amps is just only 10c. If you can, try to draw up 30amps and see how the voltage holds up.
My FP holds voltage very well for the first 10mins of flight on my EP8. The batts are so durable that i can fly them on 3s1p without much worries.
I wanna try DN next time because they cost lower. But i'm afraid that the holding voltage is not as good.

[Mojo_72]

I am abit confuse as other hobby site mentioned that DN is only graded as 15C but LHB grading it 20C. To me, DN price is very attractive but only worry it cannot hold the voltage if continous 25A draw.

[plug&fly]

Well

Actually I thought so too but recently I hooked it up on my EPP Mustang using a tarmazo 5400kv geared 1 : 5.5 and it came back after 8 mins of flying a bit soft. It was not too hot to handle but definitely warm. Later afew days after I tried it again and it was still delivering the amps and came back warm but sadly, soft Not bloated but soft. So I have my doubts now. So be careful, try not to overdraw or push too hard.

[mathsinstrument]

Actually I thought so too but recently I hooked it up on my EPP Mustang using a tarmazo 5400kv geared 1 : 5.5 and it came back after 8 mins of flying a bit soft. It was not too hot to handle but definitely warm. Later afew days after I tried it again and it was still delivering the amps and came back warm but sadly, soft Not bloated but soft. So I have my doubts now. So be careful, try not to overdraw or push too hard.

What was the estimated amp draw of ur setup? What capacity DN cells are you using?
The 'softness' was compared to ur previous battery? What was ur previous battery brand?

Sorry for the bunch of questions, i believe everyone wants to know the credibility of new batteries, as there are many emerging out there.....

[plug&fly]

Well

It is estimated to be about 7 - 18 amps for about 8 minutes of flight with short 5-10 secs of full power bursts(18 amps). The battery is soft compared to its original state which is hard. It almost feels there is a layer of jelly underneath the plastic cover. My previous brand was etec. Surprisingly, even after about 7 -8 flights after that it still provides the same power as the first few flights before the softening thing. But abit worrying as it is soft.

[mathsinstrument]

I encountered the same thing when our guys are having fun with our Micro RS4 with Lipo 2 cells.
Apprently, it returns to it's original state after allowing it to cool after some time. Maybe it has to do with it chemistry? Or are we playing on the edge and not realising it?