rechargeables in TX

kvik369 · Post by **kvik369** » Tue Nov 30, 2004 6:16 am

(as he bows)
I am not worthy I am not worthy

Another question to the RC Gods. From bits/zips to Mini-z's - I hear different things about using rechargeables in your TX's. So whats the story? Good or bad?

Bit boy · Post by **Bit boy** » Tue Nov 30, 2004 12:52 pm

rechargeables are the norm in full size transmitters. Never seen em used in a micro transmitter though.

chrome · Post by **chrome** » Tue Nov 30, 2004 1:02 pm

Bit boy wrote:rechargeables are the norm in full size transmitters. Never seen em used in a micro transmitter though.

No they aren't. You should never use rechargeables (unless it's a TX pack) in a Tx. Think about it. The voltage comming off of one rechargeable cell is 1.2V. Alkalines have 1.5V. The amount of range you get is directly related to the voltage running through your Tx. With rechargeables the power just isn't there. In a full size using rechargeables, you are missing 2.4V under alkalines. With a micro, I'm not sure how much it matters, but I would think a higher voltage would be better for charging the battery in the car. Now available current does play a part, and NiMH do have more available current than alkalines.

I think this is right. Ph2t, Code, any of you electrical guys care to comment?

Later,
Chrome...

crazydave · Post by **crazydave** » Tue Nov 30, 2004 4:48 pm

It was my understanding rechargables were the norm in a full size transmitter. Most controllers even have charging jacks. After all 8 AAs can get expensive every time you accidently leave your radio on.

Bit controllers, I don't know. Since it's a charger and controller. Someone else will have to comment on that.

chrome · Post by **chrome** » Tue Nov 30, 2004 5:15 pm

It was my understanding rechargables were the norm in a full size transmitter. Most controllers even have charging jacks. After all 8 AAs can get expensive every time you accidently leave your radio on.

1/10th is my area of experitice. I've always heard that rechargeables were bad, unless you use a TX pack. The charging jacks you talk about are for these packs. They are made for that. I was talking about not using AA rechargeables.

Later,
Chrome...

betty.k · Post by **betty.k** » Wed Dec 01, 2004 1:06 am

i use nimh batts in my iwaver and futaba tx with no ill effects. rechargeables would also be fine in a bit or other toy's tx provided you don't use it to charge with. i'm not sure if that's good.

sg219 · Post by **sg219** » Wed Dec 01, 2004 1:58 am

I use IC-3's in everything but the large scale controllers. Mini-T(8AA), Xmod(9V), Iwaver(8AA)....

In the Bits and ZZ's and other 1:64th scale rides, I use IC-3's with no problems in the Charger/TX. I also will use IC-3's in the stand alone chargers with no problem either.

kvik369 · Post by **kvik369** » Wed Dec 01, 2004 6:28 am

ok still confused - but thanks