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Andy777:
14 Feb 2020 16:14:59
Hi there. Im new. Having problems with my tarot landing gear. Its plugged into ch7 on futaba receiver. When i flick switch on transmitter i can hear a faint click on both legs but no movement. My flight controller is a mini px4 with no aux out terminals.
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3d - Printworx

Printing 3d Forum

Some thoughts from you on batterys

Started by XH558, Saturday,December 01, 2012, 21:12:25

Previous topic - Next topic

XH558

I have long been a convert to lipolys since the very early days of the little Ikarus Picoly when I realised that for less weight you could get extra flight time. This was underlined when I bought, secondhand,  my - now ancient - Robbe Eolo. It came to me with 2 NiCad house bricks that gave me 6 minutes tops - I changed to lipolys and suddenly - for half the weight - I was getting 12 minutes and over.

Stay with me - we';re nearly there  ;)

I decided at the start that I would stick with one brand I trusted and was a ';named'; brand that was respected - and I especially went for reliability and a good ';C'; rating.

So I hit on Flightpower EVO range and was able to use them in my Eolo and my plank fleet very successfully. I bought the ';V Balancer'; and everything was peachy.

Now - since going multicopter and discovering HobbyKing I have been a traitor and have begun buying Turnigy - specifically the Nano Tech range - for I realised that my Flightpowers weren';t really ';Up'; for the job of the multicopter.

I now begin to think that maybe the Nano Tech is a not necessary luxury and maybe the standard Turnigy would ';do';.

So what';s the opinion here ....

I realise you - like me - may have a favourite brand - but it would be interesting to hear what they are and why.

And does the Nano Tech angle justify the extra dosh in Turnigy.

   






icedfusion

I have a mix of batteries - I have overlander, turnigy, turnigy nano-tech and ';zippy';
By far, my favourite is the zippy 3000mah 3S. I like it for its profile and for not that much more weight gives more time in the air than the 2200mah.

However, saying that, my overlanders have lasted a long time and have not let me down, whereas I have had a few turnigy nano-tech batteries just seem to decay at a much faster rate. I have no idea  why this is, it is just my observations and I have spent well over 500 pounds on batteries.

ice.

XH558

Good info - just what I was looking for  :cool:

What ';C'; rating ';Zippy 3000mah 3S'; are you using ??

Rappy Freak

I use Turnigy 3s 2200mah on all my mulitcopters and am very happy with them.  The main reason I use them is the price.  They do what I want them to and work well.   :cool:
SkyNet shall rise!!!!!!

XH558

On quads and Hexs are ';C'; ratings important - remembering I know nothing about electrickery and amps and volts and crap  :embarrassed
I just connect ';em up - and they work ... but I do know that higher ';C'; ratings can be better - because I';ve been told - so would say a 20 ';C'; cope with a quad/hex - or is a higher number preferable?

Jumpy07

I have some 20/30c Turnigy 3000mah.. they were fine in the warmer weather.. but struggle a bit in the cold..

Nanotechs arent that much more expensive now.. and so much better...

I am running these now.. 25-50c   http://www.ebay.co.uk/itm/Turnigy-nano-tech-lipo-battery-3300mAh-3S-25C-To-50-C-Lipo-Pack-/170913254004?pt=UK_ToysGames_RadioControlled_JN&hash=item27cb394a74

BNUC-S Pilot with PfCo /PFAW.
UAQ / CAA PfCo Instructor / Flight Assessor

"All that is necessary for the triumph of evil is that good men do nothing"

teslahed

Monday,December 03, 2012, 11:17:58 #6 Last Edit: Tuesday,December 04, 2012, 20:46:02 by teslahed
Quote from: XH558 on Monday,December 03, 2012, 10:15:39
On quads and Hexs are ';C'; ratings important - remembering I know nothing about electrickery and amps and volts and crap  :embarrassed
I just connect ';em up - and they work ... but I do know that higher ';C'; ratings can be better - because I';ve been told - so would say a 20 ';C'; cope with a quad/hex - or is a higher number preferable?


The C ratings are always suspect to me, but in theory;

I';ve just bought myself a 1600mah 3 cell Turnigy Nano-tech battery rated at 25-50C discharge rating.

1600mah = 1.6amp continuous discharge at 1C, or 40amps continuous discharge at 25C. On my quadcopter each motor is rated at 8 amps max, so I';ve got at least 2 amps headroom for each motor. I don';t have a watt meter at the moment (i should really get one) but this seems about right.

If your C rating isn';t high enough you';ll have problems with the batteries internal resistance causing the current to drop when you need it the most.



One circlip short of a quadcopter.
 1 lobe short of an antenna.

XH558

Quote from: Jumpy07 on Monday,December 03, 2012, 11:01:30
I have some 20/30c Turnigy 3000mah.. they were fine in the warmer weather.. but struggle a bit in the cold..

Nanotechs arent that much more expensive now.. and so much better...

I am running these now.. 25-50c   http://www.ebay.co.uk/itm/Turnigy-nano-tech-lipo-battery-3300mAh-3S-25C-To-50-C-Lipo-Pack-/170913254004?pt=UK_ToysGames_RadioControlled_JN&hash=item27cb394a74


Thanks for that  ~~

Just a heads up - that battery you linked to is £30 on Ebay - but only £17.50 for the same battery on the UK warehouse of Hobby King  ;)
http://www.hobbyking.com/hobbyking/store/__29009__Turnigy_nano_tech_3300mah_3S_25_50C_Lipo_Pack_UK_Warehouse_.html


Jumpy07

Thanks for the heads up.. HK hadnt had them in stock for a while.. thats a great price
BNUC-S Pilot with PfCo /PFAW.
UAQ / CAA PfCo Instructor / Flight Assessor

"All that is necessary for the triumph of evil is that good men do nothing"