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Welcome to the FMA Direct / Lithium Power Solution Forum - 9/15/2004 10:38:09 PM   
RCadmin



Posts: 13181
Joined: 11/28/2001
From: Belle Mead, NJ, USA
Status: offline 		Welcome to the FMA Direct - Kokam LiPo battery support forum. Ask any tech support questions or general questions regarding any of FMA's products or Kokam LiPo batteries. A direct representative will be available to answer your questions.

< Message edited by Greg Covey -- 4/3/2006 1:20:21 AM >

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RE: Welcome to the FMA Direct - Kokam LiPo Support Forum - 9/19/2004 9:34:18 PM   
johnnycrash



Posts: 147
Joined: 9/13/2004
From: medina, OH, USA
Status: offline 		I was wondering when the fs8 will be available at my local hobby shop

(in reply to RCadmin)
       Post #: 2

RE: Welcome to the FMA Direct - Kokam LiPo Support Forum - 11/27/2004 3:36:49 AM   
leoyu


 

Posts: 4
Joined: 11/26/2004
From: shenzhen , CA, CHINA
Status: offline 		Times New Roman">
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       Post #: 3

RE: Welcome to the FMA Direct - Kokam LiPo Support Forum - 11/27/2004 3:53:02 AM   
pc93254


 

Posts: 5
Joined: 9/7/2004
From: New Cuyama, CA, USA
Status: offline 		What voltages will electric motors for airplanes except. Will a 6 volt motor work alright at 8.4 volts? Do you have to ask on every motor what the highest and lowest voltages are? I am very new at RC Airplanes.

Thanks
Phillip
pc93254@aol.com

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       Post #: 4

RE: Welcome to the FMA Direct - Kokam LiPo Support Forum - 12/15/2004 2:39:19 AM   
Fred Marks


 

Posts: 180
Joined: 8/5/2003
From: Frederick, MD, USA
Status: offline 		Philip,
Motors come in a broad range of capability. The major division is between brushed and brushless motors. A brushed motor that is designated as 4.8V, e.g., will generally burn up if you put 8.4V on it. Some brushless motors have a brioader range and could run at either voltage. It is best to select a motor that is designed to operate in the range of the voltage you intend to apply.

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Electroman

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       Post #: 5

RE: Welcome to the FMA Direct - Kokam LiPo Support Forum - 1/27/2005 7:47:34 PM   
dirtymode


 

Posts: 4
Joined: 11/2/2004
From: , WA, USA
Status: offline 		Sirs: I have a polymer 2200 with a Jeti 70 amp esc. I am using a Mega 22/20/2 motor with a Mini Demon gear box. With a 17x10 prop the battery gets very hot and mushy feeling. What is wrong? Thanks, Jon Kay

(in reply to Fred Marks)
       Post #: 6

RE: Welcome to the FMA Direct - Kokam LiPo Support Forum - 3/1/2005 2:25:12 AM   
scottar005


 

Posts: 2
Joined: 2/28/2005
From: cincinnati, OH, USA
Status: offline 		will the kokam lipo-502 charger charge say a 3-cell 4000 mah lithium battery

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       Post #: 7

RE: Welcome to the FMA Direct - Kokam LiPo Support Forum - 3/13/2005 12:20:39 PM   
eggvoel


 

Posts: 42
Joined: 2/21/2005
From: Manchester, ME, USA
Status: offline 		I am using Kokam 7.4v 1500 mah in my Estarter. It says not to get the batteries wet. Doesn that mean submerged wet? I plan on landing in snow so some moisture can touch the battery. Also may try floats so again some moisture.
Also, I am worried about storage. Can they be kept in an unheated shop that can get down to Zero and then be brought in to warm up overnight?
How about an airtight ammo can for storage? Thank-you. Larry

(in reply to scottar005)
       Post #: 8

RE: Welcome to the FMA Direct - Kokam LiPo Support Forum - 3/14/2005 6:05:33 PM   
Greg Covey



Posts: 4349
Joined: 5/24/2003
From: Rochester, NY, USA
Status: offline 		Hi Larry,

Yes, you can get them wet without issue. I have never submerged them so I'm not sure what happens.

It is actually better to store Lithium cells at freezing temperatures when not in use. Doing so, keeps their capacity healthy. I keep mine in an unheated garage during the winter months and warm them up for a day if I decide to use them.

Since the Lithium packs are only volatile during charge, you can keep them in a cardboard box for storage.


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       Post #: 9

RE: Welcome to the FMA Direct - Kokam LiPo Support Forum - 3/14/2005 10:36:32 PM   
eggvoel


 

Posts: 42
Joined: 2/21/2005
From: Manchester, ME, USA
Status: offline 		Thanks Greg. I didn't think the hobby shops stored them in bullet proof containers, but after reading about some fires, etc., it pays to be cautious. Larry

(in reply to Greg Covey)
       Post #: 10

RE: Welcome to the FMA Direct - Kokam LiPo Support Forum - 3/14/2005 11:00:29 PM   
MrMulligan


 

Posts: 769
Joined: 2/11/2002
From: Keyport, NJ, USA
Status: offline 		What LiPo would you recommend for a Lil Rascal with an Astro 010? ESC is what comes with the motor. I'm not new to R/C but I am to LiPo's. Don't really understand the terminology.

(in reply to eggvoel)
       Post #: 11

RE: Welcome to the FMA Direct - Kokam LiPo Support Forum - 3/15/2005 8:54:42 PM   
Greg Covey



Posts: 4349
Joined: 5/24/2003
From: Rochester, NY, USA
Status: offline 		If you look at the charts for the geared 010 on the Astro Flight site, you can see various current draw values for 2-3 cell Lithium packs using different props. This shows a general range from 4-8amps.

Since the Sig Lil Rascal is a small, under 10oz plane, you may wish to start with a lighter 2-cell pack and see if you have the desired power level you want . If not, use a 3-cell pack or a larger prop.

The new Kokam 640mAh cell comes in 2 or 3 cell packs at FMA Direct. The 2-cell 640mAh pack weighs only 1.3oz (36g) and supports up to 9.6A continuous discharge which is a good match for the weight of the Lil Rascal plane and the AF 010 power system.


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       Post #: 12

RE: Welcome to the FMA Direct - Kokam LiPo Support Forum - 3/15/2005 11:57:05 PM   
MrMulligan


 

Posts: 769
Joined: 2/11/2002
From: Keyport, NJ, USA
Status: offline 		Thank you, I appreciate the assistance.

(in reply to Greg Covey)
       Post #: 13

RE: Welcome to the FMA Direct - Kokam LiPo Support Forum - 3/20/2005 1:11:53 PM   
eggvoel


 

Posts: 42
Joined: 2/21/2005
From: Manchester, ME, USA
Status: offline 		I am using the 2c 1500 mah Kokam Lipo's in my Estarter. After about 20 minutes of flying time the plane is getting a little anemic so I land. The battery is discharged to about 7.4v. Should I run it down to the 5.3v with the ESC before charging or will it make a difference? Thank-you. 7 flights so far, having fun. Larry

(in reply to MrMulligan)
       Post #: 14

RE: Welcome to the FMA Direct - Kokam LiPo Support Forum - 3/20/2005 8:06:10 PM