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HomeAircraftHelicopterMain Discussion › Replace Battery Packs Every Year
06-06-2009 06:42 AM  9 years agoPost 1
Tmblewd

rrVeteran

Phoenix, AZ

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Well, the past couple years I've just been flying my Electric Helis. Over Easter weekend I got my Raptor out and got it all cleaned up and tuned up due to sitting on the shelf for 3 years. I bought new transmitter and receiver packs for it. (2700ma packs made for both) I was doing the same thing today with my EVO 50. I charged the receiver pack that was in it (3 year old 1800ma Sub C pack) this afternoon with my Accu-Cycle charger, the beeper started going off after 10 minutes saying the pack was charged. I thought that was strange. I turned off the charger and then back on and cycled the pack. An hour later the chager said it was charged. I really thought that was strange. I got my EVO all cleaned up and was checking the pitch/throttle curves and just making sure everything worked like it did 3 yers ago. I'd been messing around for about 10 minutes when all my servos started acting wierd and then they all quit working. I turned the receiver switch off and back on and nothing, the battery pack was dead.

Moral of the story, Spend the money every year and buy new Transmitter and Receiver Battery Packs even if you think they are good!!!

I going down tomorrow and getting a new 2700ma Sub C Receiver Pack made for my EVO 50!!

Semper Fidelis

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06-06-2009 07:16 AM  9 years agoPost 2
nivlek

rrProfessor

Norfolk England

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Try a couple of trickle charge/discharge cycles , then try a fast charge again .

At the end of the day , it gets dark .

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06-06-2009 08:00 AM  9 years agoPost 3
Philicopter

rrApprentice

Saint Anne (Kankakee) ,IL

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Nicd packs will almost always come back. My grandpa just gave me an old plane he used to fly . It hadn't been touched in at least 5 years. it still had the rx pack in the plane and the switch had even been left ON. when I first put it on the charger it of course said it was after about 5 minutes of charging and put back about 23mah. I almost tossed the pack and decide to try cycling it. I set my Thunder Power 610c charger to cycle the pack 5 times straight and at the end it finally put back the labeled capacity and then some. I have since used the pack with great results. I did the same thing with the Nimh pack and it to seems to be fine also, though I haven't tried in anything yet. So if 1 or 2 cycles doesn't do it for ya try a few more before giving up.

Phil

You can race anything you have 2 of
www.eclipsehobbies.com
Thunder Power

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06-06-2009 09:53 AM  9 years agoPost 4
swasey1982

rrApprentice

La Ceiba, Honduras

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I say keep it safe, get fresh packs each year, keep old batts for bench testing and setting up.

my 2 cents.

Richard

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06-06-2009 10:01 AM  9 years agoPost 5
nivlek

rrProfessor

Norfolk England

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I say keep it safe, get fresh packs each year, keep old batts for bench testing and setting up.
When you have a dozen or more models fully equiped , that policy becomes a tad expensive !

At the end of the day , it gets dark .

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06-06-2009 10:17 AM  9 years agoPost 6
swasey1982

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La Ceiba, Honduras

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jajajajaj that is so true !!

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06-06-2009 11:41 AM  9 years agoPost 7
Gyronut

rrProfessor

Martinsville In.

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Well if you can afford to have a fleet then you have to keep them up.

Rick

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06-06-2009 11:54 AM  9 years agoPost 8
nivlek

rrProfessor

Norfolk England

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Well if you can afford to have a fleet then you have to keep them up.
My fleet has been built up over many years , I couldn't afford to replace receiver packs every year just as a routine . I cycle my packs to determine their condition and replace them if need be .
A nicad/nimh should be good for many hundreds of cycles , once a week for four years would only be 204 cycles ! With a largish fleet , they get nowhere near that !

At the end of the day , it gets dark .

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06-06-2009 05:39 PM  9 years agoPost 9
Tmblewd

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Phoenix, AZ

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I'm chucking all my old packs. Who cares about the cost, It beats having to rebuild a EVO50 after a radio failure. I only have 2 aircraft that require receiver packs. The sailboat needs a new radio for it but that's low priority and the RC cars are up for sale. Everything else I have is electric so no receiver packs are needed.

Semper Fidelis

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06-06-2009 06:21 PM  9 years agoPost 10
RayJayJohnsonJr

rrKey Veteran

Midwest

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Replacing your packs every year just 'because' is a little foolish if you ask me. Who says you can't end up with a new pack that takes a premature dump? Spend your money on a decent load tester and use it before EVERY flight. It's the BEST way to know what state your battery is in, regardless of age. Most modern transmitters have one built in, so it's easy to tell what shape your transmitter battery is in. But definitely check that receiver pack prior to every flight with a decent load meter!

My 2 cents...

-Mark

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06-07-2009 01:36 AM  9 years agoPost 11
Tmblewd

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Phoenix, AZ

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I agree on the Load Tester, just never really had an issue until yesterday. A safe investment that's for sure.

Semper Fidelis

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06-07-2009 03:35 AM  9 years agoPost 12
lfalsetto

rrKey Veteran

COLORADO

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Replace the pack,

I have had a situation where I have charged an old pack then cycled it and it seemed fine. I let it set for a week and then put a load tester on it, guess what bad cell. If you are unsure about a pack charge it let it set for a couple of days and see if it loses it's charge.

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06-07-2009 03:51 AM  9 years agoPost 13
dkshema

rrMaster

Cedar Rapids, IA

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Do you buy a new battery for your car every year, "just because"? I think not. It spends a lot more time in inhospitable conditions, and you never give it a second thought until it won't crank your motor when you need it to. You depend in IT every time you turn the key.

Nicad and NiMh batteries are very reliable, and if you just use common sense, will provide several years of uninterrupted, safe, enjoyable flying.

One bad experience does not indicate a trend. Besides, there's really no guarantee that fresh, "new" pack is good, either. The odds are against it being bad, but I've seen brand new packs fail within a couple of uses, and have seen new packs fail simply because the solder tabs connecting them had poor spot welds.

When you buy that new pack, do you know how long it's been sitting in someone's warehouse, or display case before you bought it? No.

-----
due to sitting on the shelf for 3 years. I bought new transmitter and receiver packs for it. (2700ma packs made for both) I was doing the same thing today with my EVO 50. I charged the receiver pack that was in it (3 year old 1800ma Sub C pack)
From your account, your battery packs were at least three years old (we aren't told how old they were when you put everything on the shelf and walked away) and had simply sat for at least three years without you doing anything with them. And one of THOSE went bad, and you're telling us about this great danger of using old packs. Back to your car. Let it sit for three years, neglected, and tell us just how great that battery is when you try to crank your motor. That pack you talk of really didn't just die, you helped kill it.

-----

BTW -- if your radio system is a Futaba (or other system that uses BLACK PVC insulated wiring for the negative leads), you may want to check your switch harness wires -- the negative lead -- for what's come to be known as "black wire corrosion". It's real, and deteriorates the wire used in the harness to the point where it can and will fail.

-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz

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06-07-2009 02:46 PM  9 years agoPost 14
GMPheli

rrElite Veteran

W. Bridgewater, MA USA

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Black wire disease has nothing to do with the color of the insulation on the wire. The negative lead can corrode internally.

http://www.rcbatteryclinic.com/blkwire.html

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06-07-2009 03:20 PM  9 years agoPost 15
nivlek

rrProfessor

Norfolk England

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Years ago , there was a theory that the corrosion was due to some pigment in the black wire . I never bought that one because it always starts at the negative terminal of the battery and creeps down the wire . If I know that I'm not going to be flying a particular model for some time , I unplug the battery from the switch as a precaution .
However , I personally believe that the corrosion may be started by leaving batteries on a trickle charge for prolonged periods , causing some leakage from the battery .

At the end of the day , it gets dark .

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06-07-2009 05:01 PM  9 years agoPost 16
Nitrohuffer

rrKey Veteran

Bloomingburg,NY

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Fromeco 8 ball
Good enough for my all my 3 year old rx packs.

Lungs transformed to take in water.

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06-07-2009 06:40 PM  9 years agoPost 17
ch-47c

rrElite Veteran

san jose, ca

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Every year is too often. Like what several have stated here, it's the condition of the battery. I personally would have cycled that batteryt at least 5 times before retiring it. I load test always and with 1000mah load. I have a JR niCad pack that is 11 years old and it still holds a charge. I use it for bench work because of its age. Also a pack in a Futaba TX that I bought in 1989 and it worked great in some of my planks until about 6 months ago when it won't a charge long. But it was readily apparent.
My 1996 Honda Civic original battery was 9.5 years old and still worked, but a winter was coming up and I figured I should change it. It was a Yuasa and had sat in Las Vegas for 4 years during that time. It was a maintenanace free battery, but I pulled the caps off every mid Summer and put Dasana bottled water because the heat in Las Vegas just dries everything out. That's high quality H2O.

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06-08-2009 09:58 PM  9 years agoPost 18
chopper_crazy

rrElite Veteran

Delphos, Ohio

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I just use common sense when replacing batteries. I monitor my batteries very closely and have never had a problem. Although it sure would be a shame to lose a heli because of a $20 battery.

It's a complex, costly, glow powered anti-gravity machine!

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06-08-2009 11:45 PM  9 years agoPost 19
Yug

rrMaster

UK. Herts

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If any battery starts showing signs of reduced capacity even after cycling and/or trickle charging, then simply replace it. The more you can standardise the type of batteries you use across your fleet, the easier it is.

Vegetable rights and Peace

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06-08-2009 11:53 PM  9 years agoPost 20
GMPheli

rrElite Veteran

W. Bridgewater, MA USA

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I am going to start velcroing batts in and only keep a couple

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HomeAircraftHelicopterMain Discussion › Replace Battery Packs Every Year
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