looking for cheap cheap reciever battery or just the plug w/wires

[JBILLINGS]

need to get a cheap rec. bat or the wire plug ready to hook to a battery. just need it to test radios and such. any help would be appreciated thanx

[keithbradley]

I recently ordered a 10pk from hobbyking and I wont be using all 10. I would be glad to send one your way but it will be a while before they are here (maybe a couple weeks?). If you want to order some from HK let me know, I'll send you a link.

[Killer V]

Cheap battery

Would something like this work for you. It holds a good charge, 6.0v 350 ni-mh .
PM me your address and i will pop it in the mail for you, no charge. I used to use it for the same thing.

Killer V

[sailr]

6V may be too high for some receivers. Be careful. The plug is the same as that on a servo without using the white wire. Get a servo extension, cut it, and use that. You can also get a battery box for four AA batteries. http://www.offshoreelectrics.com/pro...p?prod=dh-3170 . It already has a plug and a switch. Definitely the easiest and cheapest way to go.

[Killer V]

looking for cheap cheap reciever battery or just the plug w/wires

Thank you for the heads up on the voltage. I have not had a problem in 5 years and a multitude of applications. Do you know what the voltage is on the one in the picture from the link you sent? 4 AA batteries @ 1.6 each. It depends on how it is configured. Please let me know what you think the output is on that one.


Thank you.

Killer V

[keithbradley]

Thank you for the heads up on the voltage. I have not had a problem in 5 years and a multitude of applications. Do you know what the voltage is on the one in the picture from the link you sent? 4 AA batteries @ 1.6 each. It depends on how it is configured. Please let me know what you think the output is on that one.


Thank you.

Killer V

Its 6v. 4x 1.5v in series.

The 5 cell nihm pack may be a 6v pack (4 x 1.2v), but peak charge can be much higher. If I remember right I think mine charge to around 7v? I havent had a problem with them though, either way. Must be a specific type of rx that cant handle it...probably something older. I think most anything made in the last few years would be fine.

[sailr]

Yes, that's right, a fully charged nicad/nimh 6V pack will be closer to 7V. That will fry just about any receiver out there unless it's being run through a BEC on a speed controller. I do know I have killed some servos on LiFE packs, 6.6V!

The AA box is 6V MAX. The AA's run down to about 1V each before they shut down.

[Fluid]

Duplicate Post

[Fluid]

It is very common to use 5 NiMH cells to power R/C receivers, car/truck guys do it all the time. Virtually all modern receivers today (and since 1991) have an internal BEC to reduce input voltage so the receiver works fine on higher voltages. If you notice, most servos are rated at both 4.8 and 6.0 volts, for those who want the extra power to the servo to increase torque.

I have used 5-cell packs on most of my boats for almost 20 years without problems. I even used 9 volt transistor batteries in some small boats. The radios I used included Futaba AM and FM, Spektrum, HiTec, and FASST. There is no problem running these packs on today's radios. The limiting factor, as I was told by techs at HiTec and Futaba, is the servo. Some don't like more than 4.8 volts nominal but most are fine on 5-cell nickel packs. I have even used 2S LiPos directly without problems, although those clearly exceed the servo voltage. Receiver? No problem, although due to the servo limits I'd not recommend LiPos without a voltage regulator.

The bottom line is to read the owner's manual for your particular receiver and servo:

All Futaba systems are designed to operate on either 4.8 volts (NiCD 4 cells) or 6 volts (Alkaline 4 cells OR NiCD 5 cells), except certain servos which are specifically labeled for use at one voltage or the other only.

Spektrum MR3000 Receiver...Voltage Range: 3.5-9.6V

Airtronics FHSS-2 Receiver...input voltage 4.8v ~ 6.0v (4 Cell ~ 5 Cell)

.

[keithbradley]

It is very common to use 5 NiMH cells to power R/C receivers, car/truck guys do it all the time. Virtually all modern receivers today (and since 1991) have an internal BEC to reduce input voltage so the receiver works fine on higher voltages. If you notice, most servos are rated at both 4.8 and 6.0 volts, for those who want the extra power to the servo to increase torque.

I have used 5-cell packs on most of my boats for almost 20 years without problems. I even used 9 volt transistor batteries in some small boats. The radios I used included Futaba AM and FM, Spektrum, HiTec, and FASST. There is no problem running these packs on today's radios. The limiting factor, as I was told by techs at HiTec and Futaba, is the servo. Some don't like more than 4.8 volts nominal but most are fine on 5-cell nickel packs. I have even used 2S LiPos directly without problems, although those clearly exceed the servo voltage. Receiver? No problem, although due to the servo limits I'd not recommend LiPos without a voltage regulator.

The bottom line is to read the owner's manual for your particular receiver and servo:





.

I've use 5 cell nihms in almost everything I've owned, and never had a problem.
Your post brought something up though. I have considered running lipos as rx packs in the past and using HV servos instead of voltage regulators. HV servos can run on 2s and sometimes 3s lipo and they make a ton of torque and are quite fast...The only reason I haven't done so is I've been leary of running lipo voltage to my rx and esc. Based on your post here, it sounds like in most cases, the rx and esc are not of concern when it comes to running a lipo rx pack?

[Killer V]

http://forums.offshoreelectrics.com/showthread.php?p=286393#post286393

I only use Lipo receiver packs for anything not using a BEC for the boat application. On my 600 and 700 Nitro heli's, I again only use a Lipo receiver pack. It drives 4 servo's a Gyro and the radio reciever. It will last all day without worry.

But as stated earlier, some of the older servos and radios may not like the 6 volts. For that I actualy use an Align 4.8v Lipo pack.

Thank you for the good info. It always pays to be cautious.

Killer V

[JBILLINGS]

man thanx for all the info , i had no idea ! and killer v you have a pm

[keithbradley]

I only use Lipo receiver packs for anything not using a BEC for the boat application. On my 600 and 700 Nitro heli's, I again only use a Lipo receiver pack. It drives 4 servo's a Gyro and the radio reciever. It will last all day without worry.

But as stated earlier, some of the older servos and radios may not like the 6 volts. For that I actualy use an Align 4.8v Lipo pack.

Thank you for the good info. It always pays to be cautious.

Killer V

This post confused me a little...
You wouldnt use any rx pack if you use the bec, right? I dont know what you mean when you say you only use lipo rx packs when you are not using a bec...

Also not sure how you have a lipo 4.8v pack...teh only lipo cells I know of are 3.7v nominal/4.2 fully charge. Am I missing something?

[Killer V]

WTB Cheap battery

Jim,

The battery pack is on it's way. I hope you put it to good use. enjoy.

Killer V

[Killer V]

WTB Cheap battery

Keithbradley,

I found that battery pack. The 4.8v pack. I was a ni-mh pack. Sorry for the confusion. I run over 50 different batteries, it gets a little confusing. I am glad we straightened it out. And the AA batteries that I get from my parts department, are rated at 1.5v, which come in even highr on a meter.

Thanks again,

Killer V