RX pack/recharchable batteries for servos...

[redhatman]

Hey, I am currently using rechargable AA batteries for my RC10GT. I am only using 4 of them, which produces 4.8 volts. Since this is a fair amount of electricity, my Fail safe always flashes low battery. I was wondering how to tell when I should recharge my batteries. When the turning is slow? Thanks
-Pat (redhatman)

 

[Revo Rancher]

Why not get a hump pack and 6 volts of power? Then you will know when you are low because the FS will really blink at the right time.

How to tell if it is low? When the FS locks up your brakes!

 

[sweetdiesel]

I'd do yourself a favor and get a 6V nimh pack. You'll get more juice for your servos and much longer running time. you also won't need to worry about discharging them completely since you can recharge them at any time. I usually juice mine up before I head out for a run.


Here is a place to get a custom made pack for very little money.

https://www.rcnitrotalk.com/forum/showthread.php?t=31312

 

[Nitrobuzzard]

I would advise getting a 6V NiMH pack too. Not only will it get your FS right, it also has more voltage and will result in faster transit times for your servos, not to mention more torque.

 

[redhatman]

How to tell if it is low? When the FS locks up your brakes!

I have an ofna fail safe... I heard that it only blocks radio interference. Does it also lock brakes when low battery?

 

[olds97_lss]

If the voltage drops below 4.2 if I remember correctly. I emailed them and they replied. I believe it was something in the low 4's.

You could also make your own out of NiMH AA's. You have to get creative with mounting, but it can be pretty permanent. 2100 Mah NiMH AA's last quite a few hours before needing charged.

If you notice in this pic, it's ziptied on right in front of the fuel tank. Having it there gave me better steering as well. This is a xxx-nt though. The layout is a bit different from the RC-10. I kept the battery pack as it gave the rear tower/trans case structural support, but it's empty.

This is a pic of a 5 cell 2100 Mah NiMH cell pack that I made.

Or, like others said, just get a normal receiver 2/3 hump pack and it should fit in the same space as the 4 AA's do.

 

[redhatman]

If the Ofna Fail safe automatically applies the brakes on low battery... that is fine with me. Just go and charge the battery. That is true right? If low 4's then the failsafe applies brakes?

 

[olds97_lss]

According to them it activates just like it does when you shut off the xmitter.

The little light blinks all the time unless it's activated. It's just a slow blink. If the batteries are low it comes on solid like it would if you lost signal.

Actually, this site OFNA Micro FS says it works on voltage from 3.8 to 6. It also tells you what the blinky/solid light means.

 

[Nitrobuzzard]

If you haven't already, you will need to "program" the FS with what you will want it to do when it "shuts down" the electronics. Bud of mine had one and didn't program it, his battery voltage dropped and it WOT, not locking the brakes as it should have.....LOL.......luckily nothing was messed up.......still was hilarious.....LOL

 

[SMaxxin]

Hey, I am currently using rechargable AA batteries for my RC10GT. I am only using 4 of them, which produces 4.8 volts.

I'm not sure about rechargeables but a standard AA battery has 1.5 volts. 1.5 x 4 = 6volts....Right?

 

[CorradoPsi]

smaxxin, correct, however alkalines cannot deliver the amout of current that rechargeables can, and so they dont work well with anything other than a stock std, servo.

 

[SMaxxin]

I guess I need to try a receiver pack. More torque does sound nice.

 

[redhatman]

I'm not sure about rechargeables but a standard AA battery has 1.5 volts. 1.5 x 4 = 6volts....Right?

Hey, yea. I was saying that for my rechargables. They say on them 1.2 volts.