RunRyder RC
 3  Topic Subscribe
WATCH
 1 page 1222 views
Helicopter
e-
Blade
Other › E-Flite Lipo Balance tap
01-28-2007 02:20 AM  10 years agoPost 1
jmc67

rrApprentice

Dutchess County, NY

My Posts: All  Forum  Topic

Hello,

Does anyone know how to measure the individual cell voltage on the E-Flite 3c 800mah battery (EFLB0995)? The wire colors are black, yellow, blue and red.

PM  EMAIL  Attn:RR  Quote
01-28-2007 02:41 AM  10 years agoPost 2
Micro-Maniac

rrElite Veteran

Pasco,Washington Formerly: Captain Chaos

My Posts: All  Forum  Topic

Should be the 2 wires next to each other access each cell -

Black/Yellow = Cell 1 = 3.3v-4.2v
Yellow/Blue = Cell 2 = 3.3v-4.2v
Blue/Red = Cell 3 = 3.3v-4.2v

The wires at each end access all three cells -

Black/Red = Cells 1 2 3 = 9.9v-12.6v
Black/Blue = Cells 1 2 = 6.6v-8.4v
Yellow/Red = Cells 2 3 = 6.6v-8.4v
 

PM  EMAIL  GALLERY  Attn:RR  Quote
01-28-2007 02:45 AM  10 years agoPost 3
jmc67

rrApprentice

Dutchess County, NY

My Posts: All  Forum  Topic

Thanks for the info.

Is it me or does this E-Flite charger (EFLC3105)get hot while charging the lipo bat?

Lipo was cold to the touch after charged. Is this good?

PM  EMAIL  Attn:RR  Quote
01-28-2007 02:48 AM  10 years agoPost 4
Micro-Maniac

rrElite Veteran

Pasco,Washington Formerly: Captain Chaos

My Posts: All  Forum  Topic

I dont have/use the E-flite charger/packs -

Cold lipo during/after charge is fine/good.

PM  EMAIL  GALLERY  Attn:RR  Quote
01-28-2007 04:54 AM  10 years agoPost 5
jmc67

rrApprentice

Dutchess County, NY

My Posts: All  Forum  Topic

Here goes another lipo noobie question....

While charging this lipo, is it possible to have a multimeter connected to the discharge connector to monitor the battery voltage?

PM  EMAIL  Attn:RR  Quote
01-28-2007 04:57 AM  10 years agoPost 6
Micro-Maniac

rrElite Veteran

Pasco,Washington Formerly: Captain Chaos

My Posts: All  Forum  Topic

Sure - I don't see any reason not to - Sounds like a good idea to me - It may not read perfectly accurate while charging but close enough.

PM  EMAIL  GALLERY  Attn:RR  Quote
02-01-2007 02:59 AM  10 years agoPost 7
littleflyer

rrApprentice

Miami, FL

My Posts: All  Forum  Topic

Oh- Captain!! Sorry had too.

Damn good idea on the meter. i think i'll try it and see if it takes any longer to charge. As for the temp on the charger it varies. The more you discharge the bat's the hotter it will get. if it's a half charge then it probably will only get slightly warm.

ps: i recently fried my charger and used a reguler field charger to charge(non-balanced) I noticed a bit of lack in power. almost like the bat's were not fully charged (MKII field charger) So i replaced the cheesy stock charger and i am back to full power.
Just some extra thoughts.

Kalt Barron 20, Blade CP Pro, H. Bird, TREX450S+++
Heli Pilots Get it up Faster

PM  EMAIL  GALLERY  Attn:RR  Quote
02-01-2007 03:09 AM  10 years agoPost 8
Micro-Maniac

rrElite Veteran

Pasco,Washington Formerly: Captain Chaos

My Posts: All  Forum  Topic

Yeah the MKII indeed doesn't fully charge lipos - It's a leftover non-updated charger from the old Li-Ion chemestry that only charged to 4.1v/cell instead of the new Li-Poly chemestry that charges to 4.2v/cell and is still overly safe at that by stopping a little short of full even for Li-Ions as there wasn't much in the way of balancing and overcharge protection back then - I used an MKII for 2 years myself and only recently upgraded to a better lipo charger (CellPro).

PM  EMAIL  GALLERY  Attn:RR  Quote
02-01-2007 03:31 PM  10 years agoPost 9
jmc67

rrApprentice

Dutchess County, NY

My Posts: All  Forum  Topic

I noticed if I use the Accu-lite power supply to power the eflite lipo charger (blade cp pro charger), it would get extreme hot that it almost melt a section of the back cover. Using this power supply, the charger would only charge the battery up to 4.10v per cell. However, if I use a different power supply (radio shack brand), the charger only got warm and the battery charged to about 4.17-4.19v per cell. The Accu-lite power and the radio shack brand are both rated at 2.5 amps.

PM  EMAIL  Attn:RR  Quote
02-01-2007 05:17 PM  10 years agoPost 10
littleflyer

rrApprentice

Miami, FL

My Posts: All  Forum  Topic

jmc - what charger did you get from Da Shack? I am tired of charging the car bat to use on the eflight charger.

I rather have a wall plug. Getting creative with old wall chargers is how i fried my original CP-pro charger. Pluged it in and it shot sparks and sounded like a firecraker expoded inside.

If not What wall plug can i get to use with the bat charger???
what ratings? i know its a Max output of 12-15V but what amp rating?
is it 2.5amps?

Kalt Barron 20, Blade CP Pro, H. Bird, TREX450S+++
Heli Pilots Get it up Faster

PM  EMAIL  GALLERY  Attn:RR  Quote
02-01-2007 11:41 PM  10 years agoPost 11
jmc67

rrApprentice

Dutchess County, NY

My Posts: All  Forum  Topic

It's an old desktop charger that I purchase several years back. It is made by Micronta. Regulated 12v power - output is 13.8v @ 2.5 amps. The Accu-Cycle power is ratedd at 14.5v @ 2.5 amps. Perhaps this is why the little lipo charger got hot.

PM  EMAIL  Attn:RR  Quote
02-02-2007 12:06 AM  10 years agoPost 12
TomFoolery

rrApprentice

mandan, ND

My Posts: All  Forum  Topic

You just need a wall charger that puts out 12vdc at a minimum of .5 amps. If you have a 12vdc wall charger that puts out 1,204,872,130,874,209,387,401,923,471,092,847,309,182,740,921,374 amps of power you can use it too, since amps has no relation on whether the charger will work or not. Just need minimum of .5 amps, does not matter if it is more amps, as the charger will only use what is needed.

Most 12vdc power supplies put out 14vdc, just like a 12volt car battery really puts out closer to 13.6VDC. The charger got hot because its a piece of junk designed to be included at the minimum manufacturing cost, it has a large resistor inside that drops the voltage down so it can be used to charge the battery. Dropping the voltage down creates alot of heat in that resistor, and that is why it gets hot. Has nothing to do with the power supply amps being high.

PM  EMAIL  Attn:RR  Quote
02-02-2007 12:33 AM  10 years agoPost 13
jmc67

rrApprentice

Dutchess County, NY

My Posts: All  Forum  Topic

This is interesting TomFoolery. However, as said before using the accu-lite ps generates too much heat and the other it does not. Both are rated equally. Is there another type of lipo chager that will charger the eflite lipo battery through the balancer connetor wthout having to do any modifications?

1st image is where the plastic started to melt.

PM  EMAIL  Attn:RR  Quote
WATCH
 1 page 1222 views
Helicopter
e-
Blade
Other › E-Flite Lipo Balance tap
 Print TOPIC  Make Suggestion 

 3  Topic Subscribe

Tuesday, December 12 - 2:12 pm - Copyright © 2000-2017 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online