What Lipo's do You use on your Trex 450? - RC Groups
Shop our Airplanes Products Drone Products Sales
Thread Tools
Apr 10, 2007, 04:23 PM
Meh, it'll still fly.
Question

What Lipo's do You use on your Trex 450?


I've got a stock 450SA. I'm running a align 430 with a 12t pinion. Right now I''ve got a big old 2200 lipo 14C rating. I'm getting 10 minutes hovering.

What lipos are you guys using with success.
Last edited by Dan_eflyer; Apr 10, 2007 at 04:50 PM.
Sign up now
to remove ads between posts
Apr 10, 2007, 04:28 PM
T-REX450SE T-REX600CF
I guess it depends on what you consider success. I am using DN Power 2150 mAh 20C batteries which I am satisfied with mainly because they are relatively cheap and seem to deliver decent power. I only get about half your flight time with my setup but I run a high headspeed. I never fly the batteries more than 5 minutes and I have a resting charge of about 11.5v when finished which is my target zone.

DN Power 20 batteries are about $89 for two.
Apr 10, 2007, 04:44 PM
Meh, it'll still fly.
Quote:
Originally Posted by MartyWakat
I guess it depends on what you consider success. I am using DN Power 2150 mAh 20C batteries which I am satisfied with mainly because they are relatively cheap and seem to deliver decent power. I only get about half your flight time with my setup but I run a high headspeed. I never fly the batteries more than 5 minutes and I have a resting charge of about 11.5v when finished which is my target zone.

DN Power 20 batteries are about $89 for two.
Damn, my resting charge is 10.8 to 11.2. Most times my lipo's come off the bird warm. I've got one e3 lipo 1600amp rated at 16C but it's garbage. It's brand new but will only give about 7 minutes and it comes off HOT. Scary hot. Resting voltage is usually 10.2. I've balanced the pack, but that didn't help.

Anyway, DN Power... I'll check it out.

Thanks,
Apr 10, 2007, 05:26 PM
T-REX450SE T-REX600CF
I have run them down below 11.0 but my LiPo only lasted about 40 cycles and it was then toast so now I only run them down to about 11.5 or 11.4 at the lowest. These DN packs have had a ton of cycles on them and other than some slight puffing they are still kicking strong.
Apr 10, 2007, 05:37 PM
Permanent Novice
th3tick's Avatar
(disclaimer: just entering week 2 of TRex ownership)

I set my ESC to the "high cutoff", and have been stopping when the motor starts pulsing. I'm using the Align 2100 mAH 22C batteries that came with the v2. With that setting, it's supposed to do that at 3.2V per cell, which makes 9.6V total. They come off the heli warm, and once they've cooled, it's typically been about 3.4 or 3.5 when I've plugged them in.

I noticed that finless said in the videos that he uses the middle cutoff which is 2.9V each or 8.7V.

Are you implying that I'm probably draining them too far, and thus risking their longevity? 11.0V seems like it would be pretty short flights.
Apr 10, 2007, 05:41 PM
Registered User
Twin-Jet-Crash's Avatar
I'm using an Align 2100mAh, 16C pack in my rex (JGF 450TH, 11 tooth, 335PRO blades) and get about 10 minutes of flying.
I land at about 9 minutes, and when charging, the battery takes from 1600 to 1800mAh, wich seems fine by me.
Apr 10, 2007, 05:53 PM
Registered User
how long do these packs take to charge??
Apr 10, 2007, 06:11 PM
Registered User
It depends. For example, for a 2000mah battery @ 1amp charge, it should take 2 hours.
Right guys?
Apr 10, 2007, 06:11 PM
T-REX450SE T-REX600CF
I slow charge mine with a balance charger at 0.6C which usually takes about 2 1/2 hours or so to charge.
Apr 10, 2007, 06:18 PM
Mom says I'm special...
beafraid8's Avatar
I fly TP Extreme 2070's and 2200's. I prefer the 2200's with the 430L and the 13-tooth pinion just for the overhead, but we'll see what happens with the Neu 1107h-1.5y!!

I had a TP Prolite 2100 puff just a bit on me when my belt was too tight, so I won't use those packs for sure! Overhead is always good if you can afford the weight...

The 2200's come down around 105 degrees after about 6 minutes of HARD flying.

I charge at 1C (or maybe slightly less), so charge times are always around 1 hour. I have the TP 1010C and the 210 balancer so I could theoretically charge faster, I just choose not to since the packs are so much $$$.
Apr 10, 2007, 07:04 PM
Suspended Account
brovic777's Avatar
I use DN Power 2150Mah 20c 11.1v. These are great to start on and are very affordable... Under $50 bucks each...
Apr 10, 2007, 07:24 PM
Uno' CrashO'
CHCHGSR's Avatar
I'm using a mixture
Hyperion 1800 20c -
yuntong (came with the heli) that is a 2100 20c
2 x 1700's again 20c
2 x 2200 hextronix 20c
all are great - resting temps are
hyperion 11.x
yuntong 10.7 to 11.0
hextronix 10.8 to 11.0
all balance well and perform great.
Im running high head speed and hover for about 8 to 10 mins - all depends on what pack.
the hextronix are from here they have the align balancer attached.
$32.50 each.
Apr 10, 2007, 08:07 PM
Registered User
Hey brovic777, do you also use the dn charger,or a different one? I am also looking at using these, but I am not sure what ends to put on them for a different charger. I read where theses lipos have reverse polarity for the charger.
Apr 10, 2007, 09:22 PM
Registered User
I have a TP 11.1v 2100mAh 15C continuous/24C burst lipo and was wondering what would be the best voltage to run the battery down to in order to get the maximum number of cycles out of it.
Specs:
T-Rex 450SA
430L 11t pinion
BL25G ESC
325 Fiber (will be woodies as soon as LHS gets some in stock)

Anyone have any suggestions??
Apr 10, 2007, 09:37 PM
US Support / 107 Certified
blade strike's Avatar
I will list in order:

TP are #1

2nd The new align 22c are really nice if the reseller gives you a good deal on them.

3rd DN power, best bang for the buck... cmon, $90 for 2 packs cant beat that
Latest blog entry: Mavic CrystalSky Mount


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Discussion What kind of tape do you use on your wings? buurin Sailplane Talk 20 May 09, 2007 07:53 PM
Discussion What headspeed do you run on your trex? renerc Mini Helis 21 Nov 05, 2006 11:42 PM
What, if anything, do you have on your keyring? Here's what's on mine(deep breath..) jay flay tway Life, The Universe, and Politics 16 Sep 01, 2005 11:33 PM
What Resolution do you use on your PC?? boomerace Life, The Universe, and Politics 19 May 09, 2002 02:55 PM
What Model Servos do you use on your Duskstik? mrebman Parkflyers 1 Nov 02, 2001 03:17 PM