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View Full Version : Will a Ni-MH designed battery charge a Li-ion?



willie_M
15-07-2004, 11:44 PM
Hi guys,

I just got a new cellphone, a 3315. I used to have a 5110.

The 5110 has a 3.6v Ni-MH battery and the 3315 has a 3.6v Li-ion battery.

My mate has a 3310 with the same shape battery as the 3315 only its Ni-MH.

Can my charger which was for the 5110 charge the Li-ion battery. It seemed to work fine charging the 3310...

Cheers
Willie_M

robsonde
16-07-2004, 12:25 AM
you should be ok......

the phone has all the smart charging stuff and the power pack is the same across both phones as far as i know.

switching the batteries between the two phones would be very bad.

Growly
16-07-2004, 11:57 AM
Why would it be bad?

If it provides the same voltages, same current, same regularity, same polarity, fits in the right way, then what does the phone care where the power is coming from?

Although come to think of it, they dont recommend it :D

lagbort
16-07-2004, 11:59 AM
actually as far as i know all nokia phones use the exact same charger, and i still use the charger from my old 5110 on my 2280 and my dads phone.

go right ahead

godfather
16-07-2004, 12:14 PM
I have a charger here for a 6110 (which used a NiMh battery)

It also fits a 6210 which I also have, but thr 6210 has a LiOn battery

It charges, but only to a point, then the phone says "not charging"

The vehicle adapter charger does the same thing.

Other chargers here will charge either with no problem.

I would therefore conclude its charger specific, and related to the current attributes or the impedance presented by the charger more than the voltage, which appears similar.

Exactly the same happens with my 3650 (LiOn), when using the 6110 charger

lagbort
16-07-2004, 12:22 PM
hmm thats interesting gf, all of our nokia chargers (about 8 collected over the years) will charge any ofthe nokia phones i have ever had/seen, even the new 'quick charge' ones that come with all the newer phones

godfather
16-07-2004, 12:36 PM
My feeling is, if it works, its fine.

If it refuses to charge, then its not going to work!

Graham L
16-07-2004, 02:18 PM
The tendency is for the batteries to be smart. So a clever little chip in the package tells the charger what to do.

The way LiIon packs react to maltreatment is with "rapid venting", otherwise known as "explosion":D

But you are probably OK.

willie_M
18-07-2004, 02:45 AM
Thanks guys, it seems to work fine and it hasm't exploded yet so...

Cheers
Willie_M

R2x1
18-07-2004, 03:15 AM
> Thanks guys, it seems to work fine and it hasm't
> exploded yet so...
>
> Cheers
> Willie_M

No worries, it will only explode once, then it's immunised ;)
R2

willie_M
25-07-2004, 06:57 PM
okay, it didn't explode but i definitly killed it. It wont turn on when the sim card is in, and when i on it without the simcard it says "battery low"

This happened cos i left the charger in it all night, which i used to do with my 5110. Obviously these phones dont turn the charge off automatically so... bum.

So yeah, it wont even charge now, so now ive learnt my lesson, im gonna ditch this li-ion bs, and get me a real battery.

Nickel metal hydride...

mmm, doesnt it sound nicer?

so just a warning to others...

WATCH YOUR PHONE WHILE ITS CHARGING!

willie_M

Graham L
26-07-2004, 04:51 PM
LiIon do need special charging. ;-) So do NiMH. So do NiCd, and lead-acid. :D

Battery University (http://www.batteryuniversity.com/) is a very good online book.

A Compaq Presario 1230 I bought a while ago has a dead NiMH battery, but Google tells me that I can use an LiIon without any problems. There's more room for a clever charger in a laptop.

willie_M
26-07-2004, 11:15 PM
ahhh... my mate got it working again...

he did something with the battery. like facing north, pointing his little finger to the moon and pressing the on button while the charger was plugged in...

so uh... battery university... interesting read.

cheers graham.