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HelicopterMain Discussion › what size batteries ahd where to buy them...
12-22-2003 02:37 AM  13 years agoPost 1
ken_d

rrNovice

Seymour, CT 06483

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Hey guys,

I have a Raptor 60 that I'm putting together and would like to know what size battery packs you're using. I'm using a 501GY w/9253 and 4 - 9202s for the rest of the controls. Will also have a Venom temp gauge and a Gem 2000 with the fuel alarm. What would be best battery size and where would you order it from?

Thanks for your input!

Kenny

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12-22-2003 02:46 AM  13 years agoPost 2
labby

rrNovice

southern illinois

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battery

Expert makes a 2700mah nickel metal battery that is what i run and i get about 4 flights before i charge it

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12-22-2003 02:59 AM  13 years agoPost 3
ken_d

rrNovice

Seymour, CT 06483

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Hi labby,

Do you have a web address for the expert packs?

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12-22-2003 11:22 AM  13 years agoPost 4
C-DOG

rrVeteran

SunShineState

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We fly

The JR 1800 mah 6 volt 5 cell pack with a min.air 4575 4j voltage regulator. nice insurance while running digital servos

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12-22-2003 11:45 AM  13 years agoPost 5
vortechZ230

rrElite Veteran

U.S.A.

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Nice batteries!, Great prices!, http://www.radicalrc.com. Good service too!

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12-22-2003 11:49 AM  13 years agoPost 6
labby

rrNovice

southern illinois

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Battery

yes http://www.horizonhobby.com
the part number is exrb300

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12-26-2003 10:30 PM  13 years agoPost 7
ken_d

rrNovice

Seymour, CT 06483

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batteries

Thanks for the replies, guys! I like the idea of the voltage regulator a lot. Just another "must have" item to sell my wife!

Kenny

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12-27-2003 02:35 AM  13 years agoPost 8
Daniel Santana

rrApprentice

Tampa, Fl

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4000 mah duralite redundant pack... don't forget the regulator and the charger for the warranty.

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12-27-2003 04:26 AM  13 years agoPost 9
doc203

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Shelby, Ohio

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How about for a Nexus?

I was doing good today and all the sudden she started acting sluggish. Next thing ya know no control and straight to the ground! Dead bat on the bird. I want to get a spare battery and a field charger.

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12-27-2003 02:39 PM  13 years agoPost 10
Jeff Swartz

rrKey Veteran

Ohio

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Kenny,

I have had alot of raptor 60's in the past with those 9202 servos.

You have several choices.

AA sized ni-cads will work fine, but you will only get 3-4 flights $20

AA sized nickel metal will work, but do not have the amps behind them (these are generally not the best choice for receiver batteries in helis) $20

4 cell Sub C sized 1800mh Ni-cad packs would be a very good choice! 4-6 flights. $25

5 cell Sub C - with reg... will produce very consistant power 4-6 flights and good for the intermediate - advanced flyer. $50

Duralite 4000 Li-Poly with 5.1 regulator. Probably the best possible performance. 10-14 flights on a charge and constant voltage. Advanced level pilots $150

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12-27-2003 02:40 PM  13 years agoPost 11
ez-flier

rrVeteran

Vermont

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I'm with vortech!!! Radical RC is AWESOME, they have all the batteries, i just got a 4000mah NiMh for $35 with shipping and two Futaba J connectors!!! NICE!!!!!!!!!!!!!!
Aaron

Century Rep
Magnum Rep

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12-27-2003 02:49 PM  13 years agoPost 12
ken_d

rrNovice

Seymour, CT 06483

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batteries

Ok, the battery issue is solved gentlemen. Now, what about a charger for the larger size packs? I have a new Supernova 250. Will that do the job or did I blow it by getting that charger?

Kenny

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12-27-2003 03:14 PM  13 years agoPost 13
Jeff Swartz

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Ohio

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depends, what type of battery did you get?

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12-27-2003 04:54 PM  13 years agoPost 14
ken_d

rrNovice

Seymour, CT 06483

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charger

Hi Jeff,

I was thinking about the 4 cell Sub C 1800 NiCd pack you recommended. Would the supernova do it?

Kenny

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12-28-2003 11:58 PM  13 years agoPost 15
Jeff Swartz

rrKey Veteran

Ohio

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Yes the super nova will do a great job... I know a lot of guys using them and no complaints

The 4 cell sub c is a great choice! Just stay away from the sanyo type SCR cells. these tend to have a faster discharge rate but provide more punch. The cells are red in color and really work well for powering starters. You can use them for receivers, just be awair they will drop off faster than most others.

Happy Flying!

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12-29-2003 12:52 AM  13 years agoPost 16
Glenn in Den

rrKey Veteran

Longmont, Colorado area

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Radical RC is a great site. You'll buy your pack there.

The 1800 mah Sanyo based Nicad Sub-C 4 cell pack is the best balance of weight, performance, cost and reliablility. I get at least 4 flights out of it. I'm done way before the battery is and I'm running an all digital machine - 9 ch rx, 9252's, a co-pilot too!




Glenn.

I'm not really an R/C pilot, I stayed in a Holiday Inn Express last n

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01-01-2004 06:23 PM  13 years agoPost 17
ken_d

rrNovice

Seymour, CT 06483

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batteries

ok, another dumb question...

does the reciever pack have to be 4.8 or can I use a something larger? I think I saw someone mention 6.0.

Thanks again,

Kenny

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01-01-2004 06:47 PM  13 years agoPost 18
Glenn in Den

rrKey Veteran

Longmont, Colorado area

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Some hardcore types will use a 5 cell (6 volt) battery and a voltage regulator to knock it down to 4.8 (or 5.1). This gives you a more constant voltage since you're filtering down the good stuff and always have a volt left over.

However, your adding weight and complexity and cost for not much real time benefit. You are far more likely to experience the many other problems helis commonly have before you have an in flight nicad battery failure. Odds are your voltage regulator will fail before a Sanyo based, low tech nicad will fail and with ANY system, you have to know your capacity.. . . nothing will compensate for an empty battery!

It's a little extra insurance for some.

RX batteries used to be simple. . . now you'll see people using nimh and lithiums and regulators and mega-capacity packs. There are far more choices available now but they're all just "paint on the inside of the closet door."




Glenn.

I'm not really an R/C pilot, I stayed in a Holiday Inn Express last n

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01-02-2004 01:54 AM  13 years agoPost 19
ken_d

rrNovice

Seymour, CT 06483

My Posts: All  Forum  Topic

batteries

Thanks to all of you who've replied to my questions. This is what makes RR so great!

Thanks again,

Kenny

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06-17-2004 08:30 AM  13 years agoPost 20
l337hxr

rrApprentice

Irvine, CA

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yes it is true the AA sized NiMH have bad voltage drops when the servos are under load.....but of course if you're a serious 3D flyer and you bang your sticks a lot, you shouldn't be using AA nimh at all.

however, i'm about to upgrade to SUB C 3000mah NiMH 4.8V packs and let me tell you, at radicalrc for $24.00 this sucker is a steal!! why?
not only does it have no memory effect, it can take super fast charging...3Amps for sure becaues its sub-C...and on top of that...subC nimh can sustain very high current draw.

http://sanyo.wslogic.com/pdf/pdfs/HR-SCU.pdf

there's a typical chart showing you that at 3AMPS constant draw, this standard sub-C nimh (NOT the superior RC3300) is able to hold over 1.2Volts throughout 75-80% of the 3000mah capacity!!!!! the even superior RC3300 sub-C can hold 5AMPS constant draw!!!! throughout 80% of the pack!

i mean come on, that's almost 8-10 flights for sure without having to worry about voltage drops caused by nimh!

and besides, seriously, 3AMPs constant is a LOT of current....i doubt 9252s all around on say a Raptor50 is pulling 3Amps constant....i don't even think they are pulling 2Amps constant.......

so try nimh subC if you want.....i'm upgrading when i upgrade to all digital servos....and its only going to cost me 33% more battery weight than my radicalrc 2700nimh AA pack. to me, that's worth it. its like 3 oz heavier.....

SceaduEvo50, FF9

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