Would 15C 2100mah Batts be ok for B400?

[Wayno]

G'day everyone.

B400 newbie here, looking around for some more batts for more flying (grasshopping) time, would 15C 2100mah be ok?

Cheers :cheers

[sokal]

you will have less punch power but it will work
batt may get hot

[Wayno]

Thanks Sokal!

[randerson07]

I use 15c Thunder Power 2100's in both my blade 400 and mini titan and they work pretty darn good. I would probably buy them again next time im in the market.

[CoronaL]

15c will work fine for everything but wild 3d
might get a bit more warm though. Pricing in the US for 20C isn't really any higher though, so u might want to check about for some 20C packs

[Wayno]

Ok thanks, I ordered 1 of each just to see.

[Friedclutch]

Remember.... A 15c 1800mah pack has a lower continuous amp rating than a 2200mah 15c pack. The "C" rating is relative to the size of the pack. The 2200 15C is A-OK. The extra wieght is beneficial IMO. I alway have a breeze to fly in here in Sac, Ca.

[Twmaster]

So just how many amps does the B400 draw at both casual flying and insane 3D??

[skigolfmike]

I have 2 E-Flite 1800mAh 20C batteries and 2 Thunder Power 2100 15C batteries. Guess which batteries have more punch.

You have a 25A ESC, 1.8Ah batts*20C = 36A, 2.1Ah batts * 15C = 31.5A. In either case it's more current than the ESC is going to allow.

[LockMD]

I have a ton of batts (12) the best combo for me is 2250 20C

[Twmaster]

Has anybody managed to get any actual current draw number from their B400 yet??

[CoronaL]

Has anybody managed to get any actual current draw number from their B400 yet??
I'd have to keep mind from playing lawn dart long enough to log some data(plus I'd need a data logger lol)

the 25 amp esc will allow more than 25 amps max draw. I think it would go 40-45 burst fine. I think I read somewhere that it would probably do 40amps under hard 3d fine. Then again, who knows!

[Twmaster]

Well I 'sorta' got my answer from another forum site. A poster mentioned that 16C batteries lost RPM at high power on the B400. That means my semi-evil plan is kaput.

;)

[koyote]

I needed that info too...thanks guys, have read myself to death here the past few days

[misterg74]

I've been running 15c 2100mah's in my blade 400 for a little while n were fine but now that my flying is a little better they are getting pretty hot.

[Twmaster]

I was asking as I have some 1700mA 16C packs. It's obvious now these would be a bad idea to try.

:D

[LockMD]

I was asking as I have some 1700mA 16C packs. It's obvious now these would be a bad idea to try.

:D

Negative, they are fine to TRY, they just dont preform as well and have less time. I have two batts at 2200mah and 12C they have less punch and get warmer, so I just fly them no longer than 5 mins. Good enough for learning, maybe once we get better it would not do but for now they are fine, just limit your fly times

[LockMD]

What I mean is, if you said is this good to buy, I would say NO, but you have so it will not hurt anything to TRY.

[Twmaster]

Understood. I went ahead and ordered an Align 2100 3S 20C pack (on sale) from AlleRC so I'm awaiting delivery on that. So between that and the stock pack I'll be fine for now.

[Friedclutch]

I'd like to throw in a little on the amp draw comments. Unless you are doing HARD 3D, a very high "C" rating is not needed folks. If you spend most of you time hovering around the front yard, and learning basic foreward flight, you are pulling no where near a 15c amp draw on the stock 1800 pack.

Here's a common misconception.

"I need a 20C pack for maximum head speed at all times"

Really? Are you really flying that hard-core? NOPE. Most of us that own these will not notice the difference. Perhaps hot collective bangs here and there may not be quite as fast.

20C Max continuous draw on a basic 1800 pack. ~ 36A
20C Max continuous draw on a basic 2200 pack. ~ 45A

Generally speaking...The larger the pack you run.. The more ouput amps per "C". This means that you can run a larger pack than stock, with a lower C rating, and still have plenty of amps to play with.

[cleansho93]

Understood. I went ahead and ordered an Align 2100 3S 20C pack (on sale) from AlleRC so I'm awaiting delivery on that. So between that and the stock pack I'll be fine for now.


Has anyone had experience with this pack? Thats seems like a great deal for the price if it is a quality pack...

[Twmaster]

That's all great but my earlier question still remains un answered.

"Has anybody managed to get any actual current draw number from their B400 yet??"

Well?? (Not trying to sound like an arse but until somebody can post real numbers it's all really a guess isn't it?)

[carlo_the_wonder_frog]

Align batteries are also known as "Puffers" because 15 uses or less and they are puffed up and unusable. In short they suck. Personally I use Thunder Power 2100 Prolites 15c and have hundreds of flights on them, some of them are going on 3 years of use. I am not a Hardcore 3d fanboi, but I do alot of mild 3d and have found the prolites to work perfectly for me on my high power T-Rex. Most batteries get killed because people are flying for too long on them, remember that if you want them to last take out no more than 80% of total capacity. also a good charger helps too, the stock charger is not a good one.

[SeaComms]

That's all great but my earlier question still remains un answered.

"Has anybody managed to get any actual current draw number from their B400 yet??"

Well?? (Not trying to sound like an arse but until somebody can post real numbers it's all really a guess isn't it?)

I read on another forum, but for the life of me cant find now, someone had a data logger on one and was running at around 18amps in general hover, with peak up to 22-23 amps in mild 3D.

EDIT: I found it.... http://www.rcgroups.com/forums/showpost.php?p=9508410&postcount=2692
shows averages around 18 as I thought, but the peaks were higher than I remembered.

[Twmaster]

That is exactly what I wanted to hear. Thanks Mate!