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Reciever battery for Savage 25?

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mxboy100

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Hey guys, I'm looking for a good reliable battery that will power my Savage for racing, but i dont want to have to charge it in between heats. Something that will last a while. Got any good ideas. I am kinda on a budget, but ill just see what you guys come up with.(I hate changing batteries in between heats)
And what kind of charger do you recommend?

Thanx guys




Savage 25
X-Cellerator
 
5 cell NiMh hump pack. 1100 MaH or higher. One charge lasts me as long as 5 sets of 4 alkaline batts.
My battery charger was $120, and I don't suppose you want to spend that much, so wait for someone else's advise on that.
 
I was looking at batts like 2300 nimh, are those ok to run? Do they have long run times?

6 volts
 
No problem. MilliAmps is sort of like fuel tank size. The more you have, the more fuel you carry, and the longer your run time with it.
The battery will be about $30, but it will pay for itself many times over. I probably spent over $100 for Duracells, before I got the hump pack. Since I put it in, I'm way ahead of the $30 it cost me.
 
I got a 6V 1100mah NiMH hump pack from onlybatterypacks on ebay. It cost me $25 and it came with a 12-hr charger. I am using it with a Futaba R133F 3-channel FM receiver, two Futaba standard servos, one Futaba High Torque Metal Gear servo (steering), and an Ofna micro failsafe. One charge gets me about 2-3 hours of constant driving depending on how much I turn. I get less drive time if I drive for a while, let the truck sit for a few days, and then drive again without recharging. I can tell when the charge is getting weak by my braking performance.

I originally thought that I would get more time between charges but I have learned to live with this.
 
I'm using an MDR 1400 mah hump pack form my LHS. I believe I paid about $25 bucks for it and I use a super brain 969 pro to charge it. Since my charger gives me a full charge each time, I can run for about 3 hours, and that is with lots of turning with my Hitec 645 servo. If you spend some money and get a decent charger now, you can use it for all of your electrical items. I use mine to charge both of my glow plug igniters, my rotostart battery packs, my receiver and transmitter batteries, and miscellaneous nicads/nimhs batteries around the house. I haven't bought a disposable battery since I got my superbrain.
 
You have more mah than me so it makes sense that your pack would last longer. Do you have an electronic failsafe on the throttle/brake servo?
 
i made a 2300 mah pack 5 cells for my truck, cost like 5 bucks or something around there
 
i just amde a 1100mah 5 cell pack. bought the cells from lhs for $2.50 a piece w/ tabs and a futaba connector. all together it cost me $14 to make, and then i dipped it in plasti-dip. i wish they add more amps.
 
rossb said:
You have more mah than me so it makes sense that your pack would last longer. Do you have an electronic failsafe on the throttle/brake servo?
Click to expand...

I used to run an OFNA failsafe until about 1 week ago. Found out the failsafe was causing my glitches so I don't run it anymore. The 3 hours is an estimate only and I wasn't trying to one up you rossb. Just giving the thread starter some options on packs. I think we can all agree though that a nimh pack will last longer and be cheaper in the long run than running alkalines or nicads. In fact I still have a brand new unused 1100 mah pack for a backup. I just haven't needed to ever use it because my 1400 lasts so long. One thing I do do though is always charge it up before I go out. I don't run it for a half day and take a few days off and then run it again. The superbrain allows me to peak charge it everytime in about an hour.
 
I'm jsut kinda jumping in here but something i do is i bought rechargable AA's at walmart and i just use them for now in both reciever and transmitter but if you want a good set up i only suggest those for the transmitter and a HPI battery fot the reciever. Thats what I'm switching to in a little while. Good luck
 
sweetdiesel said:
I used to run an OFNA failsafe until about 1 week ago. Found out the failsafe was causing my glitches so I don't run it anymore.
Click to expand...

My Ofna failsafe also causes slight glitches from time to time. Charging a 1400mah pack in an hour would be nice. When my 1100mah pack goes completely dead I charge it for about 12 hours at 100ma. If I use a partial charge during the day I usually refresh charge for about 4-5 hours before running again depending on how much juice I think is left in the pack. Like I said above, I learned to live with this process.
 
does anyone know where i can find info on this superbrain charger??
 
I am using the new Ofna 1400mAh hump pack. I drilled a hole on the side of the lid for the radio box for the connectors and never have to open the radio box to charge it. makes it easier. I did have to cut and solder on a new connector. I am still running the stock radio and the ofna connector does not fit....unless you modify it. figured I'd just replace it. Works good, especially if your using a High-torque servo.
 
Does this battery have to be 6 volts, or can it be 7.2?
I am looking at maybe a 1200 or 1450 7.2 volt battery?


Savage 25
 
Add a fifth battery

I went to Radioshack and bought a AA battery box for $99 cents and wired it in series with the existing 4 cell pack, now there are 5. I use NI-MH in the packs. Then take the single cell pack and put it where the 3rd servo goes. Works really well, cheap to do. You can also charge it through the plug, but I havent found the right charger yet.
 

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