Battery electricity leaking?

[htchang1987]

Just now when I was typing on my MBP while both my hands are resting on the palm rest, suddenly I felt the part near my wrists was a little numbed. Could that possibly be an electric leak by the battery? I do I check if there is any leaking in electricity due to faulty battery?

Thanks.

 

[arkitect]

Just now when I was typing on my MBP while both my hands are resting on the palm rest, suddenly I felt the part near my wrists was a little numbed.

That would probably be the sharp edge of the MBP cutting off your blood supply…
Yup. Form before Function.

 

[htchang1987]

That would probably be the sharp edge of the MBP cutting off your blood supply…
Yup. Form before Function.

It don't really feel like cutting but it felt like some electricity shocking..
Form before Function???

 

[arkitect]

Form before Function???

You have never heard the phrase:
"Form follows function"?
Means an object's shape/form etc is influenced by its use…

In Apple, Inc.'s case it seems to be the opposite.
So, yes, Form before Function.

 

[Mactagonist]

I have heard many people complain about a tingling sensation for small electric shocks when using the new unibody machines.

Was it charging?

 

[htchang1987]

I have heard many people complain about a tingling sensation for small electric shocks when using the new unibody machines.

Was it charging?

Yes it was charging and yes it's some tingling sensation...
So it could be due to electric leakage?
Any ways to check that?

 

[themoonisdown09]

Yes it was charging and yes it's some tingling sensation...
So it could be due to electric leakage?
Any ways to check that?

Put your tongue on the case and see what happens.

 

[htchang1987]

Put your tongue on the case and see what happens.

Any better suggestions?

 

[DAMNiatx]

Any better suggestions?

use your shoes all time

 

[htchang1987]

use your shoes all time

How to use a shoe to test?

 

[iMacDragon]

if it's not plugged in with earthed cable ( the long cable, not the direct plug adaptor ) into earthed socket, then all aluminium apple laptops I've used have a tingly feel when brush against case, it's nothing to worry about, just the machine earthing though you I believe.

and as noted, it probably won't happen if wearing rubber soled shoes, due to you being non earthed too.

 

[ayeying]

The logic board uses the casing to ground itself. So you'll feel some "shocks". Depending on how severe it is, its nothing that should concern you. There are multiple grounding points if you open up the lower panel. Its quite funny to touch them for no apparent reason

 

[mikes70mustang]

what country are you in?

 

[htchang1987]

what country are you in?

Singapore. Anything to do with which country I'm in?

 

[xoggyux]

The macbook(uni or pro) are made out of aluminum (electric conductor) and they build electrostatic charge overtime (and they are not grounded since the power brick only have 2 contacts)
The easiest way to avoid it is by always wearing isolating cloth, if you really want to get rid of it no matter what, then you should try get something to "ground" it, a large conductor will do (e.g. put your computer on an aluminum table, by the way the conductor have to make contact with the computer, you can also stick a piece of wire to one corner of the laptop, again making sure it does contact, and sticking the other side of the wire to a large conductor, other thing you can do, is getting one of those cool pads that are made out of aluminum and if its "heavy enough" it will work fine + it will ground it, but again I have experienced the shock as is not that bad so you can just get use to it anyway it should not damage your computer nor kill you...

 

[mikes70mustang]

Singapore. Anything to do with which country I'm in?

Yah, theres many threads about mbps shocking people outside of the US. Something to do with grounding, voltage, and Hz cycles. In US, its 120 volts, 60 hertz. It doesnt shock us grounded or not here.

 

[xoggyux]

Yah, theres many threads about mbps shocking people outside of the US. Something to do with grounding, voltage, and Hz cycles. In US, its 120 volts, 60 hertz. It doesnt shock us grounded or not here.

I am in the US and still does it. And the powerbrick does not have the third leg so there is no ground (unless apple invented a wireless ground )

 

[mikes70mustang]

I am in the US and still does it. And the powerbrick does not have the third leg so there is no ground (unless apple invented a wireless ground )

If you use the 2 prong piece. It also helps if your grounded receptacle is actually grounded.

 

[gr8tfly]

I am in the US and still does it. And the powerbrick does not have the third leg so there is no ground (unless apple invented a wireless ground )

If you use the 3-prong extension for the brick, it will be grounded. The adapter makes ground contact through the metal button the extension slides onto [on the brick].

 

[htchang1987]

If you use the 3-prong extension for the brick, it will be grounded. The adapter makes ground contact through the metal button the extension slides onto [on the brick].

Apparently I am using the 3-prong for the brick here in Singapore, it's just that I am not using the extension as the magsafe itself is long enough.

 

[darngooddesign]

That would probably be the sharp edge of the MBP cutting off your blood supply…
Yup. Form before Function.

Holding your hands in such a way that the edge is an issue is just poor posture. Slouching is the ultimate example of form before function.