1300mAh LiFe sufficient for ignition?
12-31-2011, 10:02 PM
#1
Senior Member
Thread Starter
Join Date: Sep 2008
Location: Mumbai, INDIA
Posts: 2,224
Likes: 0
Received 0 Likes
on
0 Posts
1300mAh LiFe sufficient for ignition?
I am considering replacing my current 5c (with diode) NiMH ignition battery with a 2C LiFe 1300mAh from Hobbico to save weight. Will this be sufficient for ignition for a DLE20/30 for upto 5 flights a day? Is there really much of a point in the 75g weight saving?
Ameyam
Ameyam
01-01-2012, 03:59 AM
#2
RE: 1300mAh LiFe sufficient for ignition?
From extensive testing, recharging at the field and recording usage, I have determined that my ignition units are drawing 10 ma per minute while flying. From that, I would say you have nearly 2 hours of flying time on that ignition pack. I don't know what the packs would do near the bottom of the usage curve as I have never drawn them down that low.
Hope this helps. I have always believed that many fliers carry too large of a battery for our typical use. I always carry a fast charger to the field as well. Just a matter of personal preference. For what it's worth, my flight batteries draw the same amount of power doing warbird-style flying; fast passes, and graceful manuevers, etc.
Hope this helps. I have always believed that many fliers carry too large of a battery for our typical use. I always carry a fast charger to the field as well. Just a matter of personal preference. For what it's worth, my flight batteries draw the same amount of power doing warbird-style flying; fast passes, and graceful manuevers, etc.
01-01-2012, 09:46 PM
#5
My Feedback: (1)
Join Date: Jun 2003
Location: Coffs Harbour NSW, AUSTRALIA
Posts: 2,306
Likes: 0
Received 1 Like
on
1 Post
RE: 1300mAh LiFe sufficient for ignition?
ORIGINAL: Lifer
From extensive testing, recharging at the field and recording usage, I have determined that my ignition units are drawing 10 ma per minute while flying. From that, I would say you have nearly 2 hours of flying time on that ignition pack.
From extensive testing, recharging at the field and recording usage, I have determined that my ignition units are drawing 10 ma per minute while flying. From that, I would say you have nearly 2 hours of flying time on that ignition pack.
It's the published specs for the ignition module
http://www.modelaviation.com.au/manu...rcexlspecs.pdf
Besides, 10 mA pr minute equals 600mA pr hour (or 600mAh), way more than the published specs state
01-02-2012, 08:53 AM
#7
Senior Member
Thread Starter
Join Date: Sep 2008
Location: Mumbai, INDIA
Posts: 2,224
Likes: 0
Received 0 Likes
on
0 Posts
RE: 1300mAh LiFe sufficient for ignition?
Hey, 10 mins a flight and at the max 5 flights is 50 to 60 minutes. This is a 1300mAh. Should be more than sufficient
I didnt understand 'leave the diode'. Are you saying to put in a diode (actually 2 or 3 will be required) or use a BEC instead. I have never used a BEC, its completely greek to me as I am a mechanical enginner, not an electrical one. I prefer to use a diode- the ones on my NiMH are taped onto a piece of ply andw wrapped with insulation tape for greater rigidity
Ameyam
I didnt understand 'leave the diode'. Are you saying to put in a diode (actually 2 or 3 will be required) or use a BEC instead. I have never used a BEC, its completely greek to me as I am a mechanical enginner, not an electrical one. I prefer to use a diode- the ones on my NiMH are taped onto a piece of ply andw wrapped with insulation tape for greater rigidity
Ameyam
