RunRyder RC
WATCH
 1 page 1038 views POST REPLY
HomeAircraftHelicopterRadio - Servo - Gyro - Gov - Batt › Nimh Vs Nicad...
07-20-2002 09:09 PM  16 years agoPost 1
Parsifal

rrVeteran

Singapore

My Posts: All  Forum  Topic

Can anyone tell me what the difference between the two batteries are? Is one better than the other? i read somewhere that you cannot charge Nimh batteries? How come?

Would appreciate any info...thanks..

Indy

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
07-20-2002 11:56 PM  16 years agoPost 2
Doug

rrElite Veteran

Port Saint Luice Florida....

My Posts: All  Forum  Topic

Nicad provide high current and fail shorted . Nimh provide higher energy density (more power for there weight) but provide less peak current and fail open.

First member of Member of Bearings Anonymous

PM  EMAIL  GALLERY  Attn:RR  Quote
07-21-2002 04:59 PM  16 years agoPost 3
Parsifal

rrVeteran

Singapore

My Posts: All  Forum  Topic

Thanks Doug...btw, can Nimh be quick charged? and what do you mean by fail open and fail shorted? Bit lost when it comes to electronics....

Indy

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
07-21-2002 09:47 PM  16 years agoPost 4
jmiceli11

rrApprentice

Erie, PA, USA

My Posts: All  Forum  Topic

NiMH can be quick charged at 1.2 C or 1.2 times their capacity, but most people recommend 1C to be safe. Also you need a charger capable of peak detecting NiMH. I have a Super Nova 250 that fast charges NiMH and NiCAD as well as Pb Acid( your field box battery).
NiMH don't need to be and shouldn't be cycled like a NiCAD.
I suggest you do a search of the forum. Alot of people have had the same questions and some you might not have thought of as well.
Hope this helps!

Team Synergy, Rail Blades, Team JR Americas, Lynx Heli

PM  EMAIL  GALLERY  Attn:RR  Quote
07-21-2002 11:26 PM  16 years agoPost 5
Moore

rrApprentice

California 93094-0940

My Posts: All  Forum  Topic

True or Not True
I was told by someone who is into electric flight that I should not use Nimh for the main power supply to the motor of my electric .60 size helicopter because when Nimh loose there charge it happens rather rapidly at the end. For hilicopter aplications NiCAD's we prefered because they discharge at a slow steady rate and don't just run out like Nimh.

With Nicads, after about 80% usage, my helicopter just slowly looses power and requires more collective to stay in the air, but is still very flyable. Anybody got any experience flying MImh for the main power supply to the rotor?

PM  EMAIL  GALLERY  Attn:RR  Quote
07-22-2002 03:05 AM  16 years agoPost 6
jackd63

rrApprentice

Loveland, Colorado

My Posts: All  Forum  Topic

Try this site out. and click on
De-Mystiflying NiCd's Part 1
De-Mystiflying NiCd's Part 2
De-Mystiflying NiCd's Part 3
http://www.electrodynam.com/tip.htm

PM  EMAIL  Attn:RR  Quote
07-23-2002 03:50 AM  16 years agoPost 7
Parsifal

rrVeteran

Singapore

My Posts: All  Forum  Topic

Thanks a mill Jackd63...read all of em and now can go home without the fear of blowing anything up!!!

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
WATCH
 1 page 1038 views POST REPLY
HomeAircraftHelicopterRadio - Servo - Gyro - Gov - Batt › Nimh Vs Nicad...
 Print TOPIC  Make Suggestion 

 0  Topic Subscribe

Friday, July 20 - 11:40 pm - Copyright © 2000-2018 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online