These batteries work for Rx. pack?
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These batteries work for Rx. pack?
I have a couple of these already and just want to know if I can use these instead of getting a "hump pack"?
Also, for the Tx. do they sell any 8 cell packs that fit in the transmitter, instead of using seperate AA's?
Also, for the Tx. do they sell any 8 cell packs that fit in the transmitter, instead of using seperate AA's?
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RE: These batteries work for Rx. pack?
No, that is too much voltage for the reciever. It needs 6v, more will eventually (if not right away) cause it harm.
It depends on what radio you have. Lots of people just buy rechargable AA's and use them. The voltage is a bit low (9.6v) but it works pretty well. Others have made various mods to accept 9 or 10 cells in the tx and still others use 2/3AA and fit 10 in the space of 8 standard AA's
It depends on what radio you have. Lots of people just buy rechargable AA's and use them. The voltage is a bit low (9.6v) but it works pretty well. Others have made various mods to accept 9 or 10 cells in the tx and still others use 2/3AA and fit 10 in the space of 8 standard AA's
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RE: These batteries work for Rx. pack?
That sucks.
4 AA's don't add up to 9.6V? [sm=confused.gif]
I have rechargeable AA's as well, but packs are just more convenient. So, how much run-time could I expect from 4 AA's?
4 AA's don't add up to 9.6V? [sm=confused.gif]
I have rechargeable AA's as well, but packs are just more convenient. So, how much run-time could I expect from 4 AA's?
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RE: These batteries work for Rx. pack?
I just checked my Tx. battery for a Futaba Air system. This should work for the Tx.
9.6V 600mah
--
So, I guess this one would be no good for the Rx?
9.6V 600mah
--
So, I guess this one would be no good for the Rx?
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RE: These batteries work for Rx. pack?
9.6 is pretty low as many radios won`t do well at that voltage and have an alarm when the battery gets to 9.9 and below . I use 2650mah rechargeable AA`s for my tx and use five of the same type batteries to make my own rx packs . Both are the proper voltage and last a long time before needing recharged . Also 600mah isn`t going to get you far and you really don`t want to use nicad for rx and tx packs either.
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RE: These batteries work for Rx. pack?
Dawman,
8 rechargeable AA's are 9.6v --- 1.2v x 8 = 9.6, You would need 10 rechargeable AA's to make it to the "correct" voltage (12v) for the TX.
And unless Duracell has come up with some new technology, those batteries in you picture are 1.2v each.
Experemental,
Those batteries will power what you want them to - just not for very long
8 rechargeable AA's are 9.6v --- 1.2v x 8 = 9.6, You would need 10 rechargeable AA's to make it to the "correct" voltage (12v) for the TX.
And unless Duracell has come up with some new technology, those batteries in you picture are 1.2v each.
Experemental,
Those batteries will power what you want them to - just not for very long
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RE: These batteries work for Rx. pack?
ORIGINAL: DaveG55
Dawman,
8 rechargeable AA's are 9.6v --- 1.2v x 8 = 9.6, You would need 10 rechargeable AA's to make it to the "correct" voltage (12v) for the TX.
And unless Duracell has come up with some new technology, those batteries in you picture are 1.2v each.
Experemental,
Those batteries will power what you want them to - just not for very long
Dawman,
8 rechargeable AA's are 9.6v --- 1.2v x 8 = 9.6, You would need 10 rechargeable AA's to make it to the "correct" voltage (12v) for the TX.
And unless Duracell has come up with some new technology, those batteries in you picture are 1.2v each.
Experemental,
Those batteries will power what you want them to - just not for very long
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RE: These batteries work for Rx. pack?
What your looking at is the difference in voltages between nominal (what the battery's are rated at) and the fully charged voltage of a battery. There are terms that I cannot remember offhand for the fully charged voltage and the discharged voltage of batteries.
But, basically, the voltage of a battery will vary some depending on it's state of charge. All batteries have a nominal voltage that depends on the material the are made out of. Lead acid batteries have 2v/cell, alkaline have 1.5v/cell, nickel batteries have 1.2v/cell, lipos are 3.7v/cell but each of those batteries, when fully charged, will exceed that voltage. For example the lead acid battery in a 1:1 car has a fully charged voltage of 14.4v. And that is what you are seeing when you measure the fully charged nimh Duracell batteries. Conversely, each type of battery has a lower limit of voltage past which the battery will suffer significant damage. In lipos that voltage is 3v/cell. The mah rating of a battery is the amount of current the battery can deliver and basically defines the amount of time a battery will provide power between full charge and full discharge.
I know that explanation is lacking a lot but I hope it gives you the idea.
But, basically, the voltage of a battery will vary some depending on it's state of charge. All batteries have a nominal voltage that depends on the material the are made out of. Lead acid batteries have 2v/cell, alkaline have 1.5v/cell, nickel batteries have 1.2v/cell, lipos are 3.7v/cell but each of those batteries, when fully charged, will exceed that voltage. For example the lead acid battery in a 1:1 car has a fully charged voltage of 14.4v. And that is what you are seeing when you measure the fully charged nimh Duracell batteries. Conversely, each type of battery has a lower limit of voltage past which the battery will suffer significant damage. In lipos that voltage is 3v/cell. The mah rating of a battery is the amount of current the battery can deliver and basically defines the amount of time a battery will provide power between full charge and full discharge.
I know that explanation is lacking a lot but I hope it gives you the idea.
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RE: These batteries work for Rx. pack?
ORIGINAL: Dawman
9.6 is pretty low as many radios won`t do well at that voltage and have an alarm when the battery gets to 9.9 and below . I use 2650mah rechargeable AA`s for my tx and use five of the same type batteries to make my own rx packs . Both are the proper voltage and last a long time before needing recharged . Also 600mah isn`t going to get you far and you really don`t want to use nicad for rx and tx packs either.
9.6 is pretty low as many radios won`t do well at that voltage and have an alarm when the battery gets to 9.9 and below . I use 2650mah rechargeable AA`s for my tx and use five of the same type batteries to make my own rx packs . Both are the proper voltage and last a long time before needing recharged . Also 600mah isn`t going to get you far and you really don`t want to use nicad for rx and tx packs either.
i use these now.
i guess it depends on the person.
i used alki's and thought they where great.
but after getting the 3rd truck running and going through 8 aa's per tx.the garbage filled quickly.
for me bashing these have saved me lot of cash and worked great. last me more than a day on a charge.
as you noticed the voltage is not 9.6 but up around the 11.v mark. mine are like this as well.
#11
RE: These batteries work for Rx. pack?
ORIGINAL: DaveG55
Dawman,
8 rechargeable AA's are 9.6v --- 1.2v x 8 = 9.6, You would need 10 rechargeable AA's to make it to the "correct" voltage (12v) for the TX.
And unless Duracell has come up with some new technology, those batteries in you picture are 1.2v each.
Experemental,
Those batteries will power what you want them to - just not for very long
Dawman,
8 rechargeable AA's are 9.6v --- 1.2v x 8 = 9.6, You would need 10 rechargeable AA's to make it to the "correct" voltage (12v) for the TX.
And unless Duracell has come up with some new technology, those batteries in you picture are 1.2v each.
Experemental,
Those batteries will power what you want them to - just not for very long
Nominal voltage for nimh = 1.2v. fully charged = 1.45
Nominal voltage for lipo = 3.7v. fully charged = 4.2v
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RE: These batteries work for Rx. pack?
ORIGINAL: dacaur
Sorry, but this is completly wrong... every (non-2.4) radio I know if is powerd by 8 AA batteries, all of the higher end ones come with rechargable packs with 8 cells (9.6v). When a battery says 1.2v what you are seeing is the "nominal voltage" which is what the voltage will read when the battery is resting and nearly depleted. a fully charged 9.6 volt pack will read closer to 11.6v which is why you will never see a "full" battery meter on your radio unless you are using brand new alkalines (1.5v x 8 = 12v) Rechargables are 1.45V fully charged, 1.45 x 8 = 11.6v. The fully charged voltage of 10 AA nimh cells is 14.5v.... too high for a radio....
Nominal voltage for nimh = 1.2v. fully charged = 1.45
Nominal voltage for lipo = 3.7v. fully charged = 4.2v
ORIGINAL: DaveG55
Dawman,
8 rechargeable AA's are 9.6v --- 1.2v x 8 = 9.6, You would need 10 rechargeable AA's to make it to the "correct" voltage (12v) for the TX.
And unless Duracell has come up with some new technology, those batteries in you picture are 1.2v each.
Experemental,
Those batteries will power what you want them to - just not for very long
Dawman,
8 rechargeable AA's are 9.6v --- 1.2v x 8 = 9.6, You would need 10 rechargeable AA's to make it to the "correct" voltage (12v) for the TX.
And unless Duracell has come up with some new technology, those batteries in you picture are 1.2v each.
Experemental,
Those batteries will power what you want them to - just not for very long
Nominal voltage for nimh = 1.2v. fully charged = 1.45
Nominal voltage for lipo = 3.7v. fully charged = 4.2v
Actually, I'm not wrong. What I said was completely correct.
And if you would have read my next thread you would have seen that I explained about nominal voltages also. And finally, 10 AA rechargeable batteries is not too much for a tx any more than 5 rechargables in a hump pack is too much for an rx. When you are trying to determine the batteries needed for an application, any application, you always use the nominal voltage, not the fully charged voltage. You cannot count on the fully charged voltage because as soon as battery usage begins that voltage drops begin.
If your theory were correct, which it's not, then auto batteries would only be rated at 10v since 5 lead acid cells would have a fully charged voltage ov 12v. But we know they are not. They have 6, 2v (nominal rating) cells and a fully charged voltage of 14.4v, even though it's called a 12v system because, again, you determine battery requirements based on nominal voltage.
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RE: These batteries work for Rx. pack?
How much run time would I get with 4 AA's onboard?
The rechargeable's I have are NIMH 2300mah.
So, that Futaba Tx. pack is fine voltage wise, but the mah is too low?
I though if it works for the 4channel Air radio, it should be fine for a 2 channel Ground radio?
The rechargeable's I have are NIMH 2300mah.
So, that Futaba Tx. pack is fine voltage wise, but the mah is too low?
I though if it works for the 4channel Air radio, it should be fine for a 2 channel Ground radio?
#14
RE: These batteries work for Rx. pack?
ORIGINAL: DaveG55
Actually, I'm not wrong. What I said was completely correct.
And if you would have read my next thread you would have seen that I explained about nominal voltages also. And finally, 10 AA rechargeable batteries is not too much for a tx any more than 5 rechargables in a hump pack is too much for an rx. When you are trying to determine the batteries needed for an application, any application, you always use the nominal voltage, not the fully charged voltage. You cannot count on the fully charged voltage because as soon as battery usage begins that voltage drops begin.
If your theory were correct, which it's not, then auto batteries would only be rated at 10v since 5 lead acid cells would have a fully charged voltage ov 12v. But we know they are not. They have 6, 2v (nominal rating) cells and a fully charged voltage of 14.4v, even though it's called a 12v system because, again, you determine battery requirements based on nominal voltage.
Actually, I'm not wrong. What I said was completely correct.
And if you would have read my next thread you would have seen that I explained about nominal voltages also. And finally, 10 AA rechargeable batteries is not too much for a tx any more than 5 rechargables in a hump pack is too much for an rx. When you are trying to determine the batteries needed for an application, any application, you always use the nominal voltage, not the fully charged voltage. You cannot count on the fully charged voltage because as soon as battery usage begins that voltage drops begin.
If your theory were correct, which it's not, then auto batteries would only be rated at 10v since 5 lead acid cells would have a fully charged voltage ov 12v. But we know they are not. They have 6, 2v (nominal rating) cells and a fully charged voltage of 14.4v, even though it's called a 12v system because, again, you determine battery requirements based on nominal voltage.
Now, let me just make sure I understand what you are saying....
ORIGINAL: DaveG55
Dawman,
8 rechargeable AA's are 9.6v --- 1.2v x 8 = 9.6, You would need 10 rechargeable AA's to make it to the "correct" voltage (12v) for the TX.
Dawman,
8 rechargeable AA's are 9.6v --- 1.2v x 8 = 9.6, You would need 10 rechargeable AA's to make it to the "correct" voltage (12v) for the TX.
What it comes down to is this, for you to sit there and tell someone that 8 rechargeable batteries will not work for their TX, or will just work "OK" but is not ideal, is not only wrong, but just asinine.. 8 rechargeable will start out at about 11.6v and drop down to the 10.4-10.6 range and stay there until they are almost depleted and then the voltage will drop down sharply to the Tx's alarm voltage. What part of that sounds like 8 aa's is too low? An alkaline cell on the other hand actually starts at about 1.6 volts, but as soon as you start using it, the voltage starts dropping in a linear fashion, that is, the longer you use it, the lower the voltage gets. so its isnt long before the voltage of the alkalines meets the rechargeables...
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RE: These batteries work for Rx. pack?
We are obviously not going to agree on this so, I for one intend to stop hijacking this thread.
I know what is correct and do not post incorrect info. But, whatever, from this point out I'll let the readers make their own decisions.
You feel free to have the last word though, I'm done.
I know what is correct and do not post incorrect info. But, whatever, from this point out I'll let the readers make their own decisions.
You feel free to have the last word though, I'm done.
#16
RE: These batteries work for Rx. pack?
ORIGINAL: experimental_pilot
How much run time would I get with 4 AA's onboard?
The rechargeable's I have are NIMH 2300mah.
So, that Futaba Tx. pack is fine voltage wise, but the mah is too low?
I though if it works for the 4channel Air radio, it should be fine for a 2 channel Ground radio?
How much run time would I get with 4 AA's onboard?
The rechargeable's I have are NIMH 2300mah.
So, that Futaba Tx. pack is fine voltage wise, but the mah is too low?
I though if it works for the 4channel Air radio, it should be fine for a 2 channel Ground radio?
For the TX pack yes it will work fine. The lowe Mah just means that you will have less usage before its time to recharge it. Typical radio draw is 170-250mah, so a 600mah pack will give you, in theory, between 2.4 and 3.5 hours. In reality it will be less. First off your battery alarm will go off long before you have used the full 600mah. Second, you probably wont use all that time in one day, and a nicad pack will self discharge about 1% per day. and third, the 600mah packs that come with radios are pretty crappy, depending on how old it is it probably has less than 600mah capacity, and the crappy cells mean a higher self discharge than 1%. Basicaly my opinion is to use the pack for a max of 1.5 hours, then recharge it....
#17
RE: These batteries work for Rx. pack?
ORIGINAL: DaveG55
We are obviously not going to agree on this so, I for one intend to stop hijacking this thread.
I know what is correct and do not post incorrect info. But, whatever, from this point out I'll let the readers make their own decisions.
You feel free to have the last word though, I'm done.
We are obviously not going to agree on this so, I for one intend to stop hijacking this thread.
I know what is correct and do not post incorrect info. But, whatever, from this point out I'll let the readers make their own decisions.
You feel free to have the last word though, I'm done.
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RE: These batteries work for Rx. pack?
ORIGINAL: dacaur
not trying to get the last word here, but do you actualy believe that a fully charged car battery is 14.4v? If thats not wrong info I dont know what is...
ORIGINAL: DaveG55
We are obviously not going to agree on this so, I for one intend to stop hijacking this thread.
I know what is correct and do not post incorrect info. But, whatever, from this point out I'll let the readers make their own decisions.
You feel free to have the last word though, I'm done.
We are obviously not going to agree on this so, I for one intend to stop hijacking this thread.
I know what is correct and do not post incorrect info. But, whatever, from this point out I'll let the readers make their own decisions.
You feel free to have the last word though, I'm done.
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RE: These batteries work for Rx. pack?
ORIGINAL: Dawman
I have to agree as I know this from working or my trucks and cars .
ORIGINAL: dacaur
not trying to get the last word here, but do you actualy believe that a fully charged car battery is 14.4v? If thats not wrong info I dont know what is...
ORIGINAL: DaveG55
We are obviously not going to agree on this so, I for one intend to stop hijacking this thread.
I know what is correct and do not post incorrect info. But, whatever, from this point out I'll let the readers make their own decisions.
You feel free to have the last word though, I'm done.
We are obviously not going to agree on this so, I for one intend to stop hijacking this thread.
I know what is correct and do not post incorrect info. But, whatever, from this point out I'll let the readers make their own decisions.
You feel free to have the last word though, I'm done.
This is a quote from BatteryUniversity.com, a site that has very good information on all kinds of batteries and is written by a very knowledge man, a man that has made his living with batteries and chargers for many years and is considered an expert in the field.
"Car batteries and valve-regulated-lead-acid batteries (VRLA) are typically charged to between 2.26 and 2.36V/cell. At 2.37V, most lead-acid batteries start to gas, causing loss of electrolyte and possible temperature increases. The exceptions are small sealed lead acid batteries (SLA), which can be charged to 2.50V/cell without adverse side effect."
For anyone w/o a calculator, 2.36v x 6 cells = 14.16v (my previous statement of 14.4v was off by .24v. Sorry I was working from memory)
Here's the link to the entire article if anyone would care to verify my information is correct and not just repeated hear-say.
http://www.batteryuniversity.com/partone-13.htm
experimental_pilot, again I appologize for taking your thread so far off track.
I am truly done with this thread and will not be posting here again.
#20
RE: These batteries work for Rx. pack?
For the record i use these batteries also in my traxxas radio with no problems... and would recommened them they work good and price was not that bad.
#21
RE: These batteries work for Rx. pack?
ORIGINAL: DaveG55
OK, I said I was done and I apologize to experimental_pilot for further hijacking his thread.
This is a quote from BatteryUniversity.com, a site that has very good information on all kinds of batteries and is written by a very knowledge man, a man that has made his living with batteries and chargers for many years and is considered an expert in the field.
"Car batteries and valve-regulated-lead-acid batteries (VRLA) are typically charged to between 2.26 and 2.36V/cell. At 2.37V, most lead-acid batteries start to gas, causing loss of electrolyte and possible temperature increases. The exceptions are small sealed lead acid batteries (SLA), which can be charged to 2.50V/cell without adverse side effect."
For anyone w/o a calculator, 2.36v x 6 cells = 14.16v (my previous statement of 14.4v was off by .24v. Sorry I was working from memory)
Here's the link to the entire article if anyone would care to verify my information is correct and not just repeated hear-say.
http://www.batteryuniversity.com/partone-13.htm
ORIGINAL: Dawman
I have to agree as I know this from working or my trucks and cars .
ORIGINAL: dacaur
not trying to get the last word here, but do you actualy believe that a fully charged car battery is 14.4v? If thats not wrong info I dont know what is...
ORIGINAL: DaveG55
We are obviously not going to agree on this so, I for one intend to stop hijacking this thread.
I know what is correct and do not post incorrect info. But, whatever, from this point out I'll let the readers make their own decisions.
You feel free to have the last word though, I'm done.
We are obviously not going to agree on this so, I for one intend to stop hijacking this thread.
I know what is correct and do not post incorrect info. But, whatever, from this point out I'll let the readers make their own decisions.
You feel free to have the last word though, I'm done.
This is a quote from BatteryUniversity.com, a site that has very good information on all kinds of batteries and is written by a very knowledge man, a man that has made his living with batteries and chargers for many years and is considered an expert in the field.
"Car batteries and valve-regulated-lead-acid batteries (VRLA) are typically charged to between 2.26 and 2.36V/cell. At 2.37V, most lead-acid batteries start to gas, causing loss of electrolyte and possible temperature increases. The exceptions are small sealed lead acid batteries (SLA), which can be charged to 2.50V/cell without adverse side effect."
For anyone w/o a calculator, 2.36v x 6 cells = 14.16v (my previous statement of 14.4v was off by .24v. Sorry I was working from memory)
Here's the link to the entire article if anyone would care to verify my information is correct and not just repeated hear-say.
http://www.batteryuniversity.com/partone-13.htm
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RE: These batteries work for Rx. pack?
I use Varta 15 minute rechargables, they work fine for me!
BTW you can get 3/2AA cells up to 1600 Mah, so who ever said they are about 600, is wrong!
BTW you can get 3/2AA cells up to 1600 Mah, so who ever said they are about 600, is wrong!
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RE: These batteries work for Rx. pack?
ORIGINAL: nitro _ burner
I use Varta 15 minute rechargables, they work fine for me!
BTW you can get 3/2AA cells up to 1600 Mah, so who ever said they are about 600, is wrong!
I use Varta 15 minute rechargables, they work fine for me!
BTW you can get 3/2AA cells up to 1600 Mah, so who ever said they are about 600, is wrong!
#24
RE: These batteries work for Rx. pack?
ORIGINAL: nitro _ burner
I use Varta 15 minute rechargables, they work fine for me!
BTW you can get 3/2AA cells up to 1600 Mah, so who ever said they are about 600, is wrong!
I use Varta 15 minute rechargables, they work fine for me!
BTW you can get 3/2AA cells up to 1600 Mah, so who ever said they are about 600, is wrong!