receiver pack batteries?

[rcktpwrd]

what are you guys using for Rx batteries? :?:
I will most likely be using a Hitec hs-645mg servo on the front of my Clod based crawler...

I see Tower has lots of options for rechargeable 6 volt packs:
http://www2.towerhobbies.com/cgi-bin/wti0093p?&C=MDJ
or the basic 6 volt AA 4 pack like these:
http://www2.towerhobbies.com/cgi-bin/wti0093p?&C=MDH

I did a search but couldn't find anything specific on what batteries are used... only that most use a Rx pack of some kind...

 

[crawl rookie]

I'm using a IB sellect 1400 MAh RX pack wich is realy good i think, its made out of 2/3 sice cells.

 

[Moondust1950]

http://www.vapextech.co.uk/cgi-bin/ss000001.pl?SECTIONID=High%5fPower%5fConsumer%5fBatteries%2ehtml&NOLOGIN=1

I bought 8 of the AA batterys from the link above and then made them into 5cell packs. 2700mAh batterys and they are awesome.

Here is there product description.


Vapextech batteries are good partner for digital cameras and other high drain products. They also come in a free case to protect the batteries.

Free post.

£9.25

 

[slobin3d]

I run a Ofna 1400 Mah flat pack, works well and doesnt take up much room"thumbsup"

 

[DaViolentOne]

Venom 1100MaH 5 cell hump-pack.. For $18, it's worth it I think...

 

[rcktpwrd]

thanks for the replys! 8)

I also saw a section for NiMh Rx packs at Tower:
http://www2.towerhobbies.com/cgi-bin/wti0093p?&C=MFB

how long do these packs last? or do you guys just recharge them after every main pack runs down?

 

[Moondust1950]

I can get about 2 hours out of my pack maybe a bit less depending on how i drive. The receiver pack powers a hitec 5645rear servo and a Airtronics 94359Z for front servo And 9.6v for motors.


Once they got flat i fast charge them at 1 amp.

 

[lohocla]

I am pretty green to electric rc. except xmods.

what is purpose of the rx batt pks?

 

[Moondust1950]

When running high voltage main batterys the BEC goes down. So you take the red wire out of the wire that comes from your esc to the receiver to stop you burning your BEC if you ever want to take your rx pack out. The rx pack will power the receiver and servo's giving it enough juice.

 

[lohocla]

ahhh thanks8) .. good to know.

 

[Moondust1950]

It aslo depends on your Bec rating even with a low volt battery you may need one.

 

[lohocla]

5v 3a. its a moped.. I have a 2019 BEC rx but didnt install yet

 

[666]

I use these:

http://www.jrradios.com/Products/Default.aspx?ProdID=JRPB5008

And these:

http://www.jrradios.com/Products/Default.aspx?ProdID=JRPB5009

And:

http://www.jrradios.com/Products/Default.aspx?ProdID=JRPB5006

 

[rcdavo]

Ok newbie question here what is a BEC?

When running high voltage main batterys the BEC goes down. So you take the red wire out of the wire that comes from your esc to the receiver to stop you burning your BEC if you ever want to take your rx pack out. The rx pack will power the receiver and servo's giving it enough juice.

 

[DaViolentOne]

Ok newbie question here what is a BEC?

Battery Eliminator Circuit... Used to eliminate the need for a receiver pack... But most BEC's are too weak to give full pull to the servos for our purposes...

 

[raul duke]

BEC stands for "battery elliminator circuit" it provides proper voltage to the receiver thus elliminating the use for a receiver pack. This is built into most ESC's.

 

[rcktpwrd]

how does this pack look: http://www2.towerhobbies.com/cgi-bin/WTI0001P?&I=LXHBZ6

thaks for all the help/ideas so far! 8)

 

[Moondust1950]

That is a good pack. But the mAh is preety low.

 

[renoirbud]

Hey there

This is a tiny bit off topic;

I use a Ultimate BEC, its made to run up to 40 cells and puts out 5 amps at 6 Volts. If your ESC puts out 6 volts you can leave the red wire intact and you will add the ESC's BEC amperage to the circuit. For example if your run a S Rooster with the Ultimate BEC you have 8 amps at 6V.

The Ultimate BEC are a little pricey but I like not having to worry about having an RX pack. Also the Ultimate BEC's are available in different models, only the top of the line one is worth buying for crawling. Ihave three of these and use them in planes and crawlers, I have not been able to damage one.

Rene

PS or just get servos that run on 7.2V and run them of your main battery without a BEC (like the 5995 Hitec)