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HelicopterRadio - Servo - Gyro - Gov - Batt › What cuased my 14 MZ batteries ran down so fast?
12-14-2008 08:10 PM  8 years agoPost 1
Tommy8275

rrVeteran

Mount Juliet, TN

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What caused my 14 MZ batteries ran down so fast? My batteries on my TX 14MZ only have 2-3 flight time the most, it just happen last week and yesterday and outside Temp between 40-45 degree. During summer time I can flight 5-6 time without a problem. I did switch another battery but still have the same problem. Do you think because of the weather?
And another question is why my battery ran down so fast while i'm on the menu or setup screen 20-25 min time. Now i'm looking for a battery can run longer on my 14MZ still looking for.

Tommy K

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12-14-2008 08:15 PM  8 years agoPost 2
george0079

rrElite Veteran

USA

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yep. you need to flip one of the magnets. you have to polarity the same on both mags, so the sensor is reading both of them.

Hell... I can fix that.
Uh oh..
Nope.
It's ***ked!!!
RE-KIT!!!!!

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12-14-2008 11:11 PM  8 years agoPost 3
Tommy8275

rrVeteran

Mount Juliet, TN

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Thank ,

Tommy K

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12-14-2008 11:49 PM  8 years agoPost 4
dkshema

rrMaster

Cedar Rapids, IA

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Batteries, no matter what their chemistry, just don't like cold weather. Some are better than others, but in the end, the colder it gets outside, the less capacity your battery will have.

And running your TX for 25 minutes solid while setting things up -- it's the equivalent of two, ten minute flights.

The only solution to a longer run time is a higher mah capacity battery pack.

-----
Dave

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

Team Heliproz

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12-15-2008 12:00 AM  8 years agoPost 5
Tommy8275

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Mount Juliet, TN

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Where can I get them?

Tommy K

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12-15-2008 12:15 AM  8 years agoPost 6
GimbalFan (RIP)

rrProfessor

Big Coppitt Key, FL

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I've had good luck with HangTimes tx batteries. So have many others.

op-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-t

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12-15-2008 12:34 AM  8 years agoPost 7
dkshema

rrMaster

Cedar Rapids, IA

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Where can I get them?
That's a good question. I looked up the 14MZ, it uses a Lithium Ion pack (most likely not a lithium polymer) and it looks to be a nice, targeted design peculiar to the 14MZ. I'd be truly surprised to find an aftermarket, higher capacity Lithium Ion pack that would simply drop into the 14MZ.

The stock battery is a 7.4 volt Lithium Ion, 2200 mah pack. You'll simply need to look for something that will fit, provides 7.4 volts (a 2S LiPo will do that), and that is greater than 2200 mah in capacity. Then you may need to use a different charger than the 14MZ charger to make sure you don't to a Talking Heads "Burning Down the House" act.

-----
Dave

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

Team Heliproz

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12-15-2008 12:52 AM  8 years agoPost 8
dkshema

rrMaster

Cedar Rapids, IA

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After a bit more checking, the battery pack appears to be a SONY NP-F550/NP-F570 cartridge battery.

You can search the web and find all sorts of Lithium Ion packs in the NP-F550/NP-F570 format, some as large as 6000 mah. But then those are about three times as tall as the original pack, and you'd have trouble physically putting them into the transmitter, as they would hang out the back....

-----
Dave

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

Team Heliproz

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12-15-2008 11:23 PM  8 years agoPost 9
Tommy8275

rrVeteran

Mount Juliet, TN

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Can I use Lypo 7.4 volt 4200Mha battery with my 14MZ? I note it when full charge it will read 8.4volt.

Tommy K

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12-16-2008 01:10 AM  8 years agoPost 10
tchavei

rrProfessor

Portugal

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If you manage to stick it in there, yes.

I got a couple of relion packs, opened them, opened the futaba battery casing (and had another sony case around), ripped out the old cells (they were 3 years old, half capacity) and put the new ones in and glued the case together and used a futaba plug pigtail for charging.

2.600mAh x 2

What I don't get is that a new futaba battery should last longer. Mines used to work for 2 hours (for flying) or 1h for setting up (lcd on). I think 20 min is very short. My 2600 give me almost 3h in normal use.


--------------------
"Perfection and patience usually walk side by side..."

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12-16-2008 01:33 AM  8 years agoPost 11
Eury

rrProfessor

Dover NH

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http://www.amazon.com/gp/product/B000OAHE5A

Go buy a couple of those. Hell, for the price of an original battery go buy 7 of them. I got one a few weeks ago for my 12z (same battery as your 14mz) and it works great. Less money than rebuilding your existing pack as well.

Nick Crego

Citizen #0168

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12-16-2008 02:32 AM  8 years agoPost 12
Dr.Ben

rrMaster

Richmond, VA, USA

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At those temps, you have no choice but to have multiple charged packs with the spares somewhere warm. Lithium chemistry suffers significantly in colder temps. The highest current drain on the MZ occurs when the backlight is on. Those 25 minutes of programming you mentioned was far above the same amount of flight time.

Ben Minor

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