SavageMonster

The way I understood it was that you had to have 4 alkaline AA's or 5 cell battery pack, BUT in RC Driver magazine, I saw them say that they used rechargeable AA's for the radio equipment and they even have some photos that show only 4 rechargeable AA's in the battery box to power the servos. Is there a difference between using 4 rechargeable AA's for a car than a truck or are they the same and those people are doing it wrong??

Nitroaddict

4 rechargable AAs will produce 4.8V instead of 6V. it will still work just fine, but will lower the speed and power of the servos.

matster

My friend runs 4 x 2200mah rechargeable AA's, they are 1.5v batt's equaling 6v, and his truck runs great.

Nitroaddict

a AA rechargeable battery is 1.2V a regular alkaline AA is 1.5V

YanBooth

I have one thing to say:
http://www2.towerhobbies.com/cgi-bin...?&I=LXFJT1&P=K
Yan

Dale Gribble

My Feedback: (4)

That looks like a good 5 cell pack there. Only problem is, it probably won't fit in the stock battery box.

You basically need a 5 cell rechargable pack (5 x 1.2V = 6V) to equal 4 AA Alkaline (4 x 1.5V = 6V) cells.

Let me make a suggestion- Go ahead and spend the extra $$$ up front for rechargable batteries now.

With receiver packs, you can discharge them, peak charge them and 100% know your batteries will be
good when you run it the next day. With alkalines it is a crap shoot. When they go, they go without
warning. I know because this just happened to me and I had a runaway. And noone wants to throw out 50%
good alkalines just to be sure they are ok to use.

Plus, after 4 AA battery changeouts x 5 changeouts a month, it gets expensive.

YanBooth

Do u have any links to batteries that do fit? I thought that one did because it is made by HPI... Thanx
Yan

03 DSG Snake

That one DOES fit.

I have the same type of pack, and it even has an extra Tamiya conection on the end to charge.

Works great. Servos definately better!

mcvickj

I am currently running the Trinity 1100 mAh hump pack in my Savage and it fits with no problems. Easily lasts a whole day of bashing. It is a worthwhile upgrade.

Twobeers

Ok. now I am confused too. I have worked in commercial electronics for some 30 odd years. Everytime I measured a new alkaline cell it was 1.35-1.37v. So lets do the math again 1.35x4=5.4.

skyneverdie

So, is the GP 2200 mah Ni-cd battery is 1.5V each?

Homebrewer

My Feedback: (8)

Repeat after me 100 times.

Nicad batteries nominal voltage is 1.2 volts. It can NEVER be 1.5 volts regardless of the brand, size, color, etc...

skyneverdie

then which rechargeable battery has 1.5V and has more then 2000mah?

locoworks

none of them. that is why the HPI hump pack is 5 cells to give the same voltage as 4 alkaline cells ( not rechargeable ) the thing with running 4 nickel metals ( they must be to get over 2000 mah in an AA size case ) is that they usually have slightly less voltage than 4 nicads? i use 4 1000mah nicads in my 3 savages and don't have any problems. i would not use nickel metals as they don't take to the cold aswell as nicads. ( i'm in the UK not Bahama's ) if you want the 6 volts use the 5 cell hump pack or make your own.

04TMAXX

as far as i know, ANY rechargeable nickel based cell is 1.2 volts. i deal with batteries day in and day out, so i know how these different types act. i am running duracell procells right now, and they do awesome. i run alkalines cause i get all the batteries i want..lol. if i ever lose this job, i will switch to rechargeables probably.

rotobob

Regular alkaline batteries are rated at 1.5v because they start out at that voltage, but then as the are used up, or deteriorate, they lose voltage. They lose power quickly at approximately 1.0v. So when you use 4 at a time in series, you have 6.0v at first, then lose power gradually with time. NiCD and even more so NiMH batteries have a charge more around 1.2v, and stay that wat until they are nearly dead, when they drop off quickly. The mah of the battery depends on the brand that you have, so runtimes will differ, whether alkaline or rechargable. In the end, the tradeoff is alkaline will give you more 6.0v at first and 4.0v in the end, or NiCD/NiMH will give you 4.8 for the entire runtime. Of course, these are approximate values, and based on 4-cell series setup.

vizaracer

what do you all recomend me to get for my savage 25 with 3 servos????

matster

Get a 5 cell hump pack (6v)(1100-1200) this will give you good constant power to your servo's, and should last at least 6-8 tanks.