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Posts: 21
Registered: ‎10-06-2008
Location: Israel
0 Kudos

Is charging circuitry on Lenovo laptop faulty ?

[ Edited ]

Hi,

The battery on my Lenovo laptop stopped getting charged. Since it's about 3 years old, I bought a new battery.
However, the new battery is not being charges either.

I checked the voltage between all the connectors going to the battery from the back of the laptop, and below is what I found (the connectors/poles with yellow colour are the ones being tested. When a pair is not indicated, the voltage was 0).

[-]_NNNDCN[+]: voltage drops by 0.01V every ~3 seconds.  Currently at 1.96.
[-]_NNNDCN[+]: 3.16V, stable.
[-]_NNNDCN[+]: 3.26V, stable.
[-]_NNNDCN[+]: 3.26V, stable.
[-]_NNNDCN[+]: 2.02V, stable.

[-]_NNNDCN[+]: voltage rises by 0.01V every ~3 seconds. 
[-]_NNNDCN[+]: voltage rises by 0.01V every ~3 seconds. 
[-]_NNNDCN[+]: voltage rises by 0.01V every ~3 seconds. 
[-]_NNNDCN[+]: voltage drops by 0.01V every ~3 seconds. 

From the above I can see that when[-]_NNNDCN[+] are connected, I don't get the expected 9.6V to 12.6V.

Does the above indicate that the laptop's charging circuitry is faulty ?

Thanks,
Ron.

P.S.: Laptop is Lenovo 3000 Y200 (Disney). OS are Windows 7 and Ubuntu 10.10.

Posts: 2,409
Kudos: 373
Solutions: 127
Registered: ‎06-05-2010
Location: Rosario, Santa Fe, Argentina
0 Kudos

Re: Is charging circuitry on Lenovo laptop faulty ?

Did you tried another charger?

 

Cheers.

IPnaSh
First Spanish Community Guru - Colaborador ad honorem

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