difference between nimh packs and nicad packs?

[Banshee]

alright i would like to know what the difference is between a nimh and nicad pack. my losi xxx-nt is coming monday and i know i need one of those "hump" packs for it. i found a place called onlybatterypacks.com and they have both nimh and nicad hump packs. they sell the nimh ones for gas trucks with a charger for 19.00 on ebay (http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3139672783&category=19168)
it says it gets 5 hours of run time. and ill never run my truck for that long straight so i think its plenty.
but i need to know if those are any good.
and back to my other question, should i buy nimh pack or a nicad pack?
also what voltage and mah do i need for my losi. those are 6v 1100mah but i just wanna make sure thats what i need.

sorry for the long post but I'm like a complete newb. just beware in a few days theres gonna be a hell of a long post from me regarding my losi before i get it up and running lol.

thanks.

 

[SilentGTboy]

I run the onlybatterpacks.com

http://search.ebay.com/ws/search/Sa...p&ht=1&sosortproperty=1&from=R10&BasicSearch=


Edit: I run those packs in my car, I don't run onlybatterpacks.com If I did yes I would give you a discount but I don't, wish I did. Thanks for the PM

 

[Çh®i§tiªñ]

NiMh will perform better and longer, do not develop a memory like NiCd, and are pretty inexpensive looking back to 2 years ago.

1,100 mah and 6 volt is exactly what you want ( 1,200 mah if you just HAVE TO have even more run time )

Go with the Nimh and you will be sooooo much happier.

 

[SilentGTboy]

I say go with those auctions I showed you. They are only 1000 mAh but I've ran for days with out them dieing. I actually never have had one die yet, I always have two pre charged at home unless I'm going farther the the construction site up the road. 3 Packs at 1000 mAh is a much better deal then 2 1100 mAh for for the same price.

 

[El Pirata]

Why waste time with only 1100mah? My first set of NiMH AA size battereis was a 2100mah and I couldn't be happier.

 

[SilentGTboy]

Well My 4 pack batter holder was broke after my new duracells lasted 4 tanks. With the boat anttene I am using my my storm I have to use hump packs or the lid sticks up.

 

[Banshee]

thanks for the quick replies guys.

alright so I'm gonna get a nimh pack. and its probably gonna be one of those onlybatterypacks since they are so cheap.

now i dont think I'm gonna be getting one of those expensive quick chargers. my friend has one and yeah its cool to charge in 15 minutes but his truck is electric so its basically necessary.
so i would like to get the package one ebay that i posted the link to. its 19 for on 6v 1100mah with an overnighter.
the 3 1000mah's is a great deal but no charger.

ok heres my questions...i kinda got confused when you guys posted so does my losi need a hump pack or 4 rechargeable AA's?
I'm pretty sure its a hump pack.
my next question which is important is how long will one of those 1100mah packs last? silentgtboy says his 1000's last all day but how long is all day.
thanks again.

 

[SilentGTboy]

5 hours

 

[El Pirata]

I'll generally get more than a full day of bashing out of my 2100ma AA style batteries using 4 for the receiver and 8 for the transmitter. It is lower voltage but I have zero problems with range. I am quite sure if you were trying to transmit over a mile or two the alkalines would blow the 2100 NiMH batteries. Let's face it, how many of us are going to be transmitting really long distances?

 

[SilentGTboy]

I like to be able to see where my car is going so long range isn't a problem.

 

[El Pirata]

The 4 2100s in your receiver and 8 in your transmitter ought to work well.

 

[GilBeQuick]

In your reciever it isn't the distance you're worried about it's the voltage..... 1.2 volts for the nimh vs 1.5 for the alkalines. Over 4 batteries thats 1.2 volts right there! That's a whole nimh more with the alkalines. More volts = better throttle response and more servo power. Most servos require 6 volts (not 4.8) to get the most torque out of them.

That's why most hump packs are 5 batteries thick......

 

[Banshee]

ok ok which is the reviever? the one in the truck right. the radio controller is called the transmitter right.
well i got my truck today by the way.
anyway I'm gonna buy some rechargeables for the transmitter since it takes so many. i found on ebay for about 25 bucks, 8 nimh batteries and a charger(they all charge at once). but they are only 1800mah. i dont know if thats bad. El P said he uses 2100. now i dont know about batteries so i need you guys' help. how long will 1800mah's last in my transmitter. also is the voltage a problem? since alkalines are 1.5 volts and nimhs are 1.2 will that make it not work as good?

my truck came with a nicad hump pack but no charger so I'm just gonna get a nimh hump pack and charger so I'm all set with that.

 

[El Pirata]

While the voltage says they are only 1.2 volts currently right off the charger my 2100ma NiMH batteries are on average right off the charger 1.51 volts. Regular alkaline batteries out of the box average 1.62 volts so you're looking at 1/10th of a volt less per battery between the alk and the NiMH's. To answer your question, is the voltage going to be a problem? It has never been a problem in any of my RC's.

While I will not say because I have not tried the 1800's you will more than likely get more than the necessary play time you need for an entire day ever if you are only using 1 transmitter between 2 separate cars. This is just so long as you do like every good person should do and turn your transmitter and receiver off when not in use.

I did, however, just order a set of the 2300ma's this morning, 24 to be exact.

 

[elburro]

nimh rules all around. They can be recharged many more times than nicads, hold a charge better and longer, can deliver more current and are inexpensive. I run a 5 cell hump pack in my RC10GT and after a whole afternoon, the voltage meter is still in the green.

 

[El Pirata]

Have you tried a 4 cell combo? I guess that's my point. I have never noticed a difference between a 4 or 5 cell combo.

 

[GilBeQuick]

I got 24 or 26 (don't remember) 1800nimh AA's on Ebay for $27 shipping included.... a lot better than Radio Shack that wanted $19.99 for a pack of 4 1800's.

El P, your reading 1.5 v off of a 1.2 volt cell? Or are your batteries higher voltage?

 

[El Pirata]

Nope. Fully charged they are 1.5v off the charger. I mean regular alkalines are 1.6 volts. The voltage is always slightly lower than the actual voltage. How else would you think Duracel or Everready can advertise their batteries will hold a charge until. They start at a higher voltage so as the batteries do lose their charge in a few years they still started at a higher voltage and thus can lose a little more power before they are below their advretised rating. MAybe it was just the brand I bought in NiMH's that allow them to hit 1.5 however, I will find out tomorrow evening when my new battereis arrive, 2300s. Woooo Hoooo.

 

[Banshee]

GilBeQuick- where do you use your 1800's? i am going to buy some for my transmitter but I'm not sure if 1800mah will last long enough. please let me know how they work for you and about how long they last. thanks.

 

[Çh®i§tiªñ]

1800's should be plenty. Most of the NiCd Transmitter packs are only 700 mah and people use them. I have a 1,650 mah pack I just picked up today. Nimh too! Man I will be so happy that I wont have to recharge 3 times in one day any more!!!!!!!!!