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Home › RC & Power › ✈️Aircraft › 🚁Helicopter › Radio - Servo - Gyro - Gov - Batt › Lipo or Lithion 2S for receiver battery?
09-18-2009 01:20 AM  11 years ago
Topic Vote0Post 1
528hemi

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Rock Tavern, NY Orange County

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Lipo or Lithion 2S for receiver battery?
Can someone give the the pros and cons comparing the Fromeco relion battery compared to a 2s lipo battery (outrage 2s )

What do most of you run these days?

Thanks 528hemi
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09-18-2009 08:56 PM  11 years ago
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Barney

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Inverness Scotland

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Lion comes normally in 2600Mha cells. They are slower to charge and the discharge rate is lower.

This means to get adequate discharge rates without voltage drops when using high powered servos its advisable to fit a 5200Mha pack. (2s2P)

The recommended charge rate for Lions is much lower than a lipo..preferably overnight charging..

Lipo..you can use a 2S 2100Mha for example in a 90 due to its high discharge capability keeping the airframe lighter. The Lipo can be topped off between flights and charged at a higher rate.

Both types have lowered capacity in cold weather.

hope that helps BrianSPARTANRC Team pilot
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09-18-2009 08:58 PM  11 years ago
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Darren Lee

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Woodstock, GA

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2S A123 is better.
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09-18-2009 08:59 PM  11 years ago
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Dr Lodge

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Guildford, Surrey - UK

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All things being equal I would choose LiIon over LiPo for a receiver pack simply because LiIon are more rugged in their construction, and are more likely to survive a crash.Vibe 90, Vibe 50, Vigor CS x2,
Dyna-x, Knight 503D, Logo 10,
TRex 500, Furion, Gaui EP200
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09-18-2009 08:59 PM  11 years ago
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Ace Dude

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USA

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The recommended charge rate for Lions is much lower than a lipo..preferably overnight charging..
Most LiIon cells are rated for a 0.5C to 1C charge rate. That's hardly an overnight charge rate.  
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09-18-2009 09:26 PM  11 years ago
0Post 6
24-7 rc

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nj

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Just my 2cents but a123 packs are heavier they lipos. As to crashes it is rare to damage a RX pack in a crash if placed in the right place. I have flown both i only use lipo packs now. They both charge in about the same time but the lipo packs have a much higher discharge rate.
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09-18-2009 09:28 PM  11 years ago
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Darren Lee

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Woodstock, GA

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Just my 2cents but a123 packs are heavier they lipos.
Not when you count the saved weight of the regulator you don't need.
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09-18-2009 09:41 PM  11 years ago
0Post 8
24-7 rc

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nj

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I run all my helis on 8v so yes you still save weight
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09-18-2009 11:09 PM  11 years ago
0Post 9
AaronJohnson

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mason,MI

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This means to get adequate discharge rates without voltage drops when using high powered servos its advisable to fit a 5200Mha pack
I somewhat dis-agree

I use the Fromeco 2600 li-ion packs. I get 6 hard 3D flights and put in around 2000Mah. (8717's, bls 251 running at 6.5 volts) I always charge mine at .5 amp so it takes awhile but you can charge them at 1C no problem. (Fromeco recomends .5-.8 amp for max life) These bateries work just fine in a 50 or 90 for hard 3D with high drain electronics.

A li-po will hold a higher voltage under a load then the same capacity/voltage li-ion will under the same load due to having a higher discharge rating. That said, I have seem data logs of a FBL heli's voltage thru a flight with both a li-po and li-ion and you are talking about a difference of less then .3 volts most of the time.

I use li-ions because the make me more comfortable charging in my house. Li-ions are far more stable then li-po.

I have over 400 flights on a Fromeco 2600 pack and it hasnt decreased in performance at all from new.
Just my .02
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09-18-2009 11:50 PM  11 years ago
0Post 10
Ace Dude

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USA

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I somewhat dis-agree
He's correct. The specs are on the Fromeco site. Max draw from the 2600mAh pack is 4A and max draw from the 5200mAh is 8A.  
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09-18-2009 11:56 PM  11 years ago
0Post 11
24-7 rc

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nj

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wow i didnt know that that is LOW
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09-18-2009 11:56 PM  11 years ago
0Post 12
AaronJohnson

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mason,MI

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I know that BUT I disagree on the part when he said that you need the 5200 pack because you dont.
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