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HelicopterRadio - Servo - Gyro - Gov - Batt › Align 2 in 1 regulator battery indicator showing orange after only 1200ma drained from 3600ma lipo
07-09-2008 06:59 AM  9 years agoPost 1
Kiwi Raptor

rrApprentice

Nelson New Zealand

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I was using the 1900 ma lipo that comes with the 2 in 1 and found that it was showing orange after 1000ma drained. I have just bought a 3600ma 2s 2p lipo and again find that after draining about 1200ma that it is showing orange - with 2400 ma still left!!! Is anyone else finding the same?? Should I just ignore the indicator??
The instructions say that when red it has 7.4 volts. I thought that it was safe to drop lipos to approx 3.3 volts per cell. Any advice or suggestions would be appreciated

T Rex 700 T Rex 600 Mini Titan
Kiwi's can fly

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07-09-2008 07:46 AM  9 years agoPost 2
artimus

rrKey Veteran

Buckley WA

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Do you have a 2 in 1 that is near by that you could check it with your battery and see if you get the same reading.....

Fly Hard......Team Viagra

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07-09-2008 08:19 AM  9 years agoPost 3
Dakine

rrElite Veteran

OC, Commifornia

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I don't trust those LED indicators.

I always like to check my packs with a digital volt meter every so often when fully charged. Then, pay attention to how much you put back into the pack after charging, and average it out with the amount of flights on that pack. This is also assuming that all your flights were similar (load).

Even if the LED's show green, put a load on the packs and measure the voltage. The good thing is, LiPos most likely won't false peak like NiMH or NiCd.

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07-09-2008 12:37 PM  9 years agoPost 4
helimatt

rrElite Veteran

Lafayette, IN

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Both my 2-in-one on my nitro, and my BEC on the 600e will go to one red light, and far less than half the battery capacity is drained. Done this on different packs. I use the lights to confirm at the beginning of a flying session that the pack is fully charged, and then just fly 4 or 5 flights before recharging. I am still using only abut 50% capacity that way.

Never, ever, ever, ever give up.

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07-09-2008 12:49 PM  9 years agoPost 5
Frank Bostwick

rrElite Veteran

Cincinnati Ohio

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The eagle tree data system is the answer for this. It keeps track of Used power so there is no question about where the battery is. Not to mention, if you want, motor temp, esc temp, reg. temp, Motor RPM really just about anything you want to track.

RIP ROMAN

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07-09-2008 01:56 PM  9 years agoPost 6
fritzthecat

rrKey Veteran

Virginia Beach, VA

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Read about it here:

http://www.ronlund.com/align_2_in_1_regulator_fix.htm

Fritz


'Send Money, Women and Guns!'

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07-09-2008 03:17 PM  9 years agoPost 7
red_z06

rrProfessor

Dumont, NJ

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Lipos do not have linear voltage drop with respect to the current drain. Up to 3.7v, it will be pretty flat with only shallow slope to the curve. At 3.7v or 7.4v for 2s, you have 20% or so of reserve power. I call it that as lipos are happy if you leave 20% of juice left in the pack. You can continue to fly until 7.4v on the unloaded voltmeter. Amber only means your voltage is starting to drop and be careful to check after each flight. It is much better than all green and turn to red all of a sudden. It is more like a yellow traffic light where people still drive through.

When it hits amber, just use the volt meter to check the voltage after each flight. You will be surprised how long it takes to go down to 7.4v.

www.JustinJee.com

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07-09-2008 03:20 PM  9 years agoPost 8
Topher

rrVeteran

Rochester, Michigan

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My 2 in 1 goes to amber after about 75-80% has been taken out of my packs. Are you running a switch in between the battery and reg?

will wash your heli for a quarter

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07-09-2008 03:22 PM  9 years agoPost 9
helimatt

rrElite Veteran

Lafayette, IN

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NO external switch for me, and using Deans Ultra plugs.

Never, ever, ever, ever give up.

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07-09-2008 03:30 PM  9 years agoPost 10
Forced_Inductio

rrApprentice

Camrose, AB

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i fly until the 2in1 shows orange or just barely red, and im only putting about 900 mAh back into my pack. i think the 2in1 leans quite a bit on the safe side.

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07-09-2008 03:31 PM  9 years agoPost 11
Frank Bostwick

rrElite Veteran

Cincinnati Ohio

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What do you suppose is the average drain for a hard flight on 4 9252s, 401/9254 and a AR7000?

RIP ROMAN

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07-09-2008 03:40 PM  9 years agoPost 12
red_z06

rrProfessor

Dumont, NJ

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Anywhere from 40-60mah per minute depending on tightness of the links, type of maneuvers etc tec. It also depends on the system votage. Higher the system voltage, higher the current drain.

Our Stratus uses about 400mah per 8min flight or 50mah per minute running on 7v/5v.

www.JustinJee.com

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07-09-2008 09:21 PM  9 years agoPost 13
Kiwi Raptor

rrApprentice

Nelson New Zealand

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Thanks for the replies. I don't fly all that agressively and usually work on 350ma per flight. Thats why with a 3600ma battery 12c I expected to beable to get 7-8 flights safely. To test the battery with a voltmeter is it best to manually put some strain on the servos at the same time?? What sort of value should I see to be safe before a flight?? Next time I fly I think once it gets to red I'll continue to run it on the ground for a couple of tanks while moving the servos and continue to test the voltage.

With the corrosion X , how do you get it into the plastic case?? I'm not sure if it is available in NZ

T Rex 700 T Rex 600 Mini Titan
Kiwi's can fly

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07-10-2008 08:55 AM  9 years agoPost 14
Kiwi Raptor

rrApprentice

Nelson New Zealand

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To answer the above questions
1 I do not use a switch between the battery and reg I use Deans plugs
2 I know of others that seem to also show premature indications of the battery going flat ie red led

3 I thought that the flat part of a discharge curve for a lipo was more like the 3.5 volts per cell??? Where could I get to see a diagram of the dischage curve??

T Rex 700 T Rex 600 Mini Titan
Kiwi's can fly

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HelicopterRadio - Servo - Gyro - Gov - Batt › Align 2 in 1 regulator battery indicator showing orange after only 1200ma drained from 3600ma lipo
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