can you prove a cc lipo charger exsists?

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funfly3 - 31 Jan 2007 18:44 GMT

post here any proof that a Constant Current only charger with no voltage
control what so ever can fully charge a Li po with out going over 4.2v a
cell
or any other type of LiPo charger that does not follow the usual cc/cv cycle

I don't want to see any if buts or maybes just a simple link to a data
sheet or a battery or chargers manufacturers website

I know cc/cv chargers exist so don't post links for these

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Nobody Here - 01 Feb 2007 08:17 GMT

> post here any proof that a Constant Current only charger with no voltage
> control what so ever can fully charge a Li po with out going over 4.2v a
> cell
> or any other type of LiPo charger that does not follow the usual cc/cv cycle

Err, the laws of physics dictate that such a thing is impossible. The
terminal voltage is a function of charge state and current. Well, I
suppose you could charge at cc at the terminal charge current (perhaps
C/10) until the cell voltage reached 4.2V or whatever, but you'd be
there for at least 10 hours to charge a single LiPo, why would you want to
do that??

Signature

Nobby Anderson

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funfly3 - 01 Feb 2007 08:49 GMT

>> post here any proof that a Constant Current only charger with no voltage
>> control what so ever can fully charge a Li po with out going over 4.2v a
[quoted text clipped - 7 lines]
> there for at least 10 hours to charge a single LiPo, why would you want to
> do that??

I don't this post is for nats piss who thinks a CC only charger does exist

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The Natural Philosopher - 01 Feb 2007 09:09 GMT

>>> post here any proof that a Constant Current only charger with no
>>> voltage control what so ever can fully charge a Li po with out going
[quoted text clipped - 11 lines]
>>
> I don't this post is for nats piss who thinks a CC only charger does exist

No I do not.

You made that up.

Along with everything else.

I merely said it was possible to charge at a constant current all the
way to 4.2v and then simply stop the charge, if that is what you wanted
to do. There need be no 'tapering off' unless you count a nanosecond or
two of delay..

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funfly3 - 01 Feb 2007 09:16 GMT

>>>> post here any proof that a Constant Current only charger with no
>>>> voltage control what so ever can fully charge a Li po with out going
[quoted text clipped - 23 lines]
> to do. There need be no 'tapering off' unless you count a nanosecond or
> two of delay..

wriggle wriggle wriggle

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mjd - 02 Feb 2007 04:17 GMT

Yes sir! Immediately sir!

Sheesh, nice tone in your message.. try using some manners next time.

> post here any proof that a Constant Current only charger with no voltage
> control what so ever can fully charge a Li po with out going over 4.2v a
[quoted text clipped - 5 lines]
>
> I know cc/cv chargers exist so don't post links for these

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rspeedyv - 04 Feb 2007 04:08 GMT

Digital Super Charger/Discharger SM-5500A
Discharge Power : 22W

· Charge power : 220W
· Input V : 11~15V
· Charge :
1~10S Li-ion/polymer,
1~30 cell Ni-Cd/Ni-MH,
6V,12V,24V PB(SLA, Sealed Lead Acid)
· Charging Current : 0.25~10A
· Charge Method :
CC or CV (Li-ion/polymer)
Delta Peak (Ni-Cd, Ni-MH)
· 10-programmable memory

1.High Efficiency Digital Power System
2.Especially designed for safe Lipo charge algorithm
3.Backlir LCD
4.LiPoly Balance Charge Capability with use of optional balancer
5.Individual cell overcharge protection capability
6.Data Port to communicate to balancer
7.Automatic Fan Control
8.10 Programmable Memory charge parameter settings
9. Programmable Charge Option Settings
10.Selectable discharge cut-off voltage
11.Fast charge alogorithm

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Model Forum / Radio Controlled / Air Models / February 2007

can you prove a cc lipo charger exsists?