Li-Ion, Li-Manganese difference??

hookmaker · 10-11-2007, 01:51 PM

Hi,

I have two GREAT Duralite 4300 mAh Li-Ion packs. Now I see that Duralite also has Li-Manganese batteries - what's the difference?

Thanks
/henrik

DavidH · 10-11-2007, 05:40 PM

Li-Mag

NEW! High Current alternative to Li-Poly

• Non combustable chemistry
• Non flammable if punctured or overcharged
• Highest Discharge - 20c continuous with 40c bursts
• Great low temperature toleranace
• High charge rates up to 10c
• Stay Balance curcuit built into pack - no need for external balancing
• Longer life cycles than li-polymers
• Dual lead system - choice of power output leads/connectors, plus charging lead w/yellow connector

Li-Ion
Rugged - Compact - Reliable

• Lightweight & Powerful - constant voltage to servos
• High Energy Density - Long Cycle Life
• Built in Pack Redundancy - Available In all 4 & 6 Cell Packs
• No Memory & No cycling - Easy to Use
• More Robust than Li-poly's - Cylindrical design can
better withstand impact & vibration of model
• Max Discharge Continuous - 2C
• Dual lead system - choice of power output leads/connectors, plus charging lead w/yellow connector

Look at the discharge rates and you will see one of the main differences.

David

hookmaker · 10-13-2007, 01:54 AM

David, -thanks for your answer.

Now, I have never gone to "battery school" so please tell me:

1) Is this more a sub for "flight" Li-poly battteries (as in T-Rex 450 etc.) and/or
2) Will I gain significantly by using the Li-Ma battery as Rx battery on a nitro machine over a Li-Ion Rx battery?

KR/Henrik

DavidH · 10-13-2007, 07:28 AM

Quote:

Originally Posted by hookmaker

David, -thanks for your answer.

Now, I have never gone to "battery school" so please tell me:

1) Is this more a sub for "flight" Li-poly battteries (as in T-Rex 450 etc.) and/or
2) Will I gain significantly by using the Li-Ma battery as Rx battery on a nitro machine over a Li-Ion Rx battery?

KR/Henrik

Li-Mag does not have the discharge rate of Li-Po I don't believe. So really not a sub for that application I don't believe.

As for using the Li-Mag over Li-Ion as a receiver battery. If your electronics is a high amp current draw setup then yes I would suggest the Li-Mag. For example if all your servos use a lot of power and draw a lot of current. Then I would suggest them, for a 30 or 50 size you would probably be OK with Li-Ion.

David

spork · 10-13-2007, 10:09 AM

Quote:

Originally Posted by DavidH

Li-Mag does not have the discharge rate of Li-Po I don't believe. So really not a sub for that application I don't believe.

Your post above says: Highest Discharge - 20c continuous with 40c bursts

That seems as good as some of the better LiPo's. I was (am?) very encouraged by that statement. I was wondering though about the weight of these cells. Any info?

hookmaker · 10-13-2007, 11:30 AM

Thanks Dave - got it!
/henrik

Ah Clem · 10-16-2007, 03:19 PM

I just started using one, so I can report back my findings in a couple of weeks.

So far, I have just charged it with my Duralite charger. I flew five flights today with my new Knight 50 (8317's on cyclic, 9256 on tail, 9254 on throttle w/governor).

So far, so good. Watching the way the voltmeter was reading with each flight, I probably could have flown another five times with no problem.

Again, I will post again as I know more.

Mike Early · 03-29-2008, 08:16 PM

Quote:

Originally Posted by Ah Clem

I just started using one, so I can report back my findings in a couple of weeks.

Again, I will post again as I know more.

What gives? Wave of the future?

whisperdancer · 07-28-2008, 02:04 PM

The LiMn sure are heavier than an almost equivalent 20C Lipo.
If I take the FlightPower Evolite 2100mAh v2 (20C), compared to the 20c 2200mAh LiMn, the later weights almost 100gr more!!!

10-11-2007, 01:51 PM	#1
hookmaker Registered Users My HF Map location Join Date: Jun 2006 Location: Copenhagen, Denmark	Li-Ion, Li-Manganese difference?? Hi, I have two GREAT Duralite 4300 mAh Li-Ion packs. Now I see that Duralite also has Li-Manganese batteries - what's the difference? Thanks /henrik __________________ Hookmaker Kasama Srimok 90, Kasama Srimok 90E, JR Vibe 90 SG, JR Venture 90, JR Vibe 50 3D V-bar, Bergen Intrepid Gasser, Vision-SX 90 (x 2) MSH Protos "Monsterheli", HDX-450

10-13-2007, 01:54 AM	#3
hookmaker Registered Users Thread Starter My HF Map location Join Date: Jun 2006 Location: Copenhagen, Denmark	David, -thanks for your answer. Now, I have never gone to "battery school" so please tell me: 1) Is this more a sub for "flight" Li-poly battteries (as in T-Rex 450 etc.) and/or 2) Will I gain significantly by using the Li-Ma battery as Rx battery on a nitro machine over a Li-Ion Rx battery? KR/Henrik __________________ Hookmaker Kasama Srimok 90, Kasama Srimok 90E, JR Vibe 90 SG, JR Venture 90, JR Vibe 50 3D V-bar, Bergen Intrepid Gasser, Vision-SX 90 (x 2) MSH Protos "Monsterheli", HDX-450

10-13-2007, 11:30 AM	#6
hookmaker Registered Users Thread Starter My HF Map location Join Date: Jun 2006 Location: Copenhagen, Denmark	Thanks Dave - got it! /henrik __________________ Hookmaker Kasama Srimok 90, Kasama Srimok 90E, JR Vibe 90 SG, JR Venture 90, JR Vibe 50 3D V-bar, Bergen Intrepid Gasser, Vision-SX 90 (x 2) MSH Protos "Monsterheli", HDX-450

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10-11-2007, 05:40 PM	#2
DavidH My HF Map location Join Date: Mar 2004 Location: Birmingham, AL	Li-Mag NEW! High Current alternative to Li-Poly • Non combustable chemistry • Non flammable if punctured or overcharged • Highest Discharge - 20c continuous with 40c bursts • Great low temperature toleranace • High charge rates up to 10c • Stay Balance curcuit built into pack - no need for external balancing • Longer life cycles than li-polymers • Dual lead system - choice of power output leads/connectors, plus charging lead w/yellow connector Li-Ion Rugged - Compact - Reliable • Lightweight & Powerful - constant voltage to servos • High Energy Density - Long Cycle Life • Built in Pack Redundancy - Available In all 4 & 6 Cell Packs • No Memory & No cycling - Easy to Use • More Robust than Li-poly's - Cylindrical design can better withstand impact & vibration of model • Max Discharge Continuous - 2C • Dual lead system - choice of power output leads/connectors, plus charging lead w/yellow connector Look at the discharge rates and you will see one of the main differences. David

10-16-2007, 03:19 PM	#7
Ah Clem Registered Users Join Date: Jan 2006 Location: Alhambra, CA	I just started using one, so I can report back my findings in a couple of weeks. So far, I have just charged it with my Duralite charger. I flew five flights today with my new Knight 50 (8317's on cyclic, 9256 on tail, 9254 on throttle w/governor). So far, so good. Watching the way the voltmeter was reading with each flight, I probably could have flown another five times with no problem. Again, I will post again as I know more.

07-28-2008, 02:04 PM	#9
whisperdancer Registered Users Join Date: Feb 2008 Location: Porto, Portugal	The LiMn sure are heavier than an almost equivalent 20C Lipo. If I take the FlightPower Evolite 2100mAh v2 (20C), compared to the 20c 2200mAh LiMn, the later weights almost 100gr more!!!