RCP57

My Feedback: (25)

What size ignition batteries are you running on your twin cylinder gas engines? I'm looking for the battery size (A, AA, SC) of the battery and capacity. I’m only interested in NiCD and NiMH batteries. An engine manufacturer advised me that his ignition pulls about 1A per hour. After speaking with a well known battery pack manufacturer he advised me that I should stay away from the high resistance 20 - 25 M ohm batteries. He also advised me that I should use a pack with batteries under 10 M ohm resistance.

sillyness

My Feedback: (25)

What ignition? That will determine the voltage. For example, DA needs a 4.8V pack, 3W can go higher, etc...

Check out the NO BS Batteries 1950 NiMh.. 5 mO cells, is capable of 40 amps, very light for it's capabilities. I have the 4.8V pack on both of my DA-100s.

RCP57

My Feedback: (25)

I don't know how long it has been since you purchased your DA but, for the last two years DA has stated you can use a 6v pack with the entire DA line. My original post makes no mention of voltage, only size and capacity. All electronic gas ignitions are similar in how much voltage you can put through them. I should have been more specific in the original post. I have no intension of running such a low capacity battery such as a 1950 mAh pack. I already use 2600 mAh Ni-MH packs for the ignitions, just wanted to reduce the weight a little a keep up with the demand of the ignition. BTW, I have both a DA100 & the 150.

Geistware

My Feedback: (16)

I use a 2700maH NiMH pack on ignition.
I would recommend anything larger than a 1400maH pack

sillyness

My Feedback: (25)

Well than why did you even ask? Sounds like your mind is made up since you apparently have no intention of using the only lighter chemistry (LiIon). The 1950 is superior to the 2700

Riddance.

Panzlflyer

My Feedback: (15)

The 1950 is 4 ohm impedence and the 2700Au is 20 ohms so the 1950 is actually as good as a nicad in terms of the power delivery and way better at delivery than the 2700au but at a reduced capacity.

Geistware

My Feedback: (16)

I agree with this but if memory serves me correctly, there are cautions that must be taken when charging. Don't remember now what they are. I will stand corrected if someone knows.

sillyness

My Feedback: (25)

I haven't heard any nor have I had any problems. I use a Duratrax ICE charger (big brother to triton, same company) with the peak sensitivity cranked way up (more sensitive = smaller number). Pack never gets hot. I did notice that it doesn't do as well on the Sirius charger, but it was a long time ago that I tried that... can't remember if it cut out early or if it didn't detect the peak... no bother, the ICE works fine. So does the Triton.

In reality, if I plan on flying the next day I plug it into a Accucycle at 125 mA and leave it over night. Easiest.

The 1950 is a far superior cell to the 2700... capable of very high currents with little voltage drop. I can fly as many times as I care (usually 4 or 5 flights with a DA-100) before the voltage drops below 5.0V under a 1 Amp load. At IMAC contests I always take a charger to the field to top off if needed.

Panzlflyer

My Feedback: (15)

Geistware, I think the only thing Ive heard is not to charge it over 1C which mine says right on the battery from NOBS.
In fact Nobs has relegated the 2700 to the sport section in favor of the newer style NIMHs for GS

RTK

My Feedback: (1)

I have a few of these also and that is exactly what I was told too. Be sure and do a forming charge first, then have at it.

JoeAirPort

My Feedback: (41)

A NoBS 1950 FAUP will blow away any 2700 mah NiMh in terms of capacity. Since the ignition will not draw more than an amp that extra 39 amps goes into increasing capacity. I wish people would just buy one of these and see what I mean. The 1950 FAUP lasts 2-3 days easily on an ignition.

RTK

My Feedback: (1)

These are great for an ignitions.
I was told by an ignition manufacturer that there ignition takes the energy needed in big "gulps" so to speak. That being said, this battery would fit the bill.

shoey721

We'll be powering our DA150 this year with a 4800 Fromeco Peerless Li-on on a regulator. Should last all weekend. Also we use the Accu Cycle the night before.

RCP57

My Feedback: (25)

Take a look at the specs on your little 1950s and compare them to the 2600s. Your cells with a 5A draw will fall below 1.2v at around 1000mAh. The 2600 mAh batteries I'm using will take a 30A draw down all the way to 2200 mAh. Take a look at the resistance while you’re reading. The 1950s have a 5mO and the 2600 have a 4mO resistance. The only advantage with the little 1950s is the weight. The 1950s weigh 39 g each and the 2600 weigh 62 g each. So for a 4 cell pack the little 1950s weigh a whopping 3 1/4 ozs less. That is far superior in my book AAAAAAAAAA.

I'm comparing to your Sanyo HR-4/5AUP 1950mAh, it is the Sanyo HR-SC 2600mAh. The little Sanyo HR-AU 2700mAh batteries are good for transmitter use with the huge 20mO resistance.

Panzlflyer

My Feedback: (15)

Where do you get the 2600? Cant find it at Radical or Nobs

sillyness

My Feedback: (25)

Well... I can see this thread has also been relegated to infantile name calling. I think I'm about done posting on RCU. Good job buddy. Way to promote the hobby. I hope to god you aren't sponsored... what a waste of a diplomatic position that would be. Since you pissed me off with language bordering on racial slurs, here is my retort.

If you hadn't noticed, the 1950 was being compared to the 2700, not this 2600 that noone has ever heard of (we all assumed you made a typo referring to the 2600). I guess it would have been too much to politely educate us on your new miracle cell.

The NO BS site claims 4 mo for the 1950.

You can keep your little batteries and their little extra 650 mAh and their 3 1/4 extra ozs. For you, you're looking at over 4 ozs since you apparently use 6.0V packs (as compare to a 6.0V 1950). Then again, since I am using a 4.8V 1950s and you want to use 6.0V 2600s, your battery weighs almost 5.5 ozs more. If noone has ever shown you a conversion chart down there in Texas, 5.5 ozs is over 1/3 pound... that's a hell of a lot of weight. Come to think of it, I'm jealous... I'll use my little whimpy 1950s that work excellent in all aspects and I think i strap 1/3 pound of lead (that's 22 of those stick-on weights) to the nose just 'cause I want a lead sled too. When I switch to an ignition that draws 5 Amps I'll reconsider the battery

Yes, we in the great white North can do metric AND imperial in our igloos... even while hunting seals, fending off polar bears, and breeding with our sisters. Betcha' can't do that down there in Hickville while running people through the electric chair, can ya'?

sillyness

My Feedback: (25)

Oh... I forgot... even you are right about the 1950 being a whopping 5 mo vice 4mo, well, all I can say is ooooooooooooooooooo. Congrats, what a find!

RTK

My Feedback: (1)

But what is wrong with the electric chair? I kinda like Old Sparky

RCP57

My Feedback: (25)

All together now.

RCP57

My Feedback: (25)

The Sanyo HR-SC 2600 mAh batteries are available at any Sanyo distributor. You can purchase them at [link=http://www.tnrtechnical.com/]TNR Technical[/link]. They are one of the largest distributors in the good old USA. They also make up packs for a minimal fee, and batteries is their only business.

sillyness

My Feedback: (25)

You know what the really sad thing is... I am an American on an assignment in Canada... while up here you really get to see the homeland from the outside-in and you really can see why the rest of the world hates us so much. Good work buddy. I really am embarrassed to be one of you right now. Good work. I saw an Iranian and an Israeli on here too... you want me to point you toward them?

RTK

My Feedback: (1)

.

sillyness

My Feedback: (25)

True, but we have a definite attitude problem in our country. Pretty much respectless for anyone else, and often for each other within our own country. We live in a narcisistic society. Pretty sad. We CAN be good and nice.

'nuf said.

sillyness

My Feedback: (25)

Oh... the batteries. A 5 cell 2600 weighs over 1/3 of a pound more than a 4-cell 1950. That's a lot of weight to add just for a battery.

I don't need a 5 Amp discharge, just 1 Amp.

JoeAirPort

My Feedback: (41)

Here's a link to the graph for the HR4/3-FAUP: http://sanyo.wslogic.com/pdf/pdfs/HR-43FAUP-3200.pdf

I'm not sure how you get that it will fall below 1.2 volts with 1000mah disch cap at 5 amps. I get that it will hold 1.2 volts and have 1400mah disch cap at 10 amps. Am I reading this wrong? I don't see a 5 amp curve either. I am looking the graph on the right.