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Meetloaf13
SCSI Port
Posts: 94
Registered: ‎11-05-2010
Location: USA
Views: 478
Message 1 of 7

Power Adapter: Same Voltage, Less Wattage

Quick Question.

 

I have a y560 with a quad i7 Q740. 

 

Looking for an extra power adapter.  I know you can run into problems if you don't match up the Voltage properly, but will you have problems if the Wattage is low?

 

The stock adapter runs at 120 W 19.5V 6.15A

 

I've seen some decently priced replacements at 19.5V & 90W.

 

Don't want to damage my machine.

 

Thanks!

*****************************************************************************
| Lenovo Y560 06465BU | i7-740QM 1.73GHz | ATI HD 5730 1GB | 15.4" HD LED 1366x768 LGD229 | Intel Wi-Fi 1000 | Win 7 HP x64 | Bluetooth 2.1 + EDR | 3dMark06 8189 | BIOS v62
Retired Moderator
Retired Moderator
Posts: 13,719
Registered: ‎12-07-2009
Location: CZ
Views: 466
Message 2 of 7

Re: Power Adapter: Same Voltage, Less Wattage

if you don't want to damage your computer, i suggest you to buy an adapter with the same specifications as original. ( voltage, amp, etc )

http://www.krasotaiskusstva.com
Meetloaf13
SCSI Port
Posts: 94
Registered: ‎11-05-2010
Location: USA
Views: 464
Message 3 of 7

Re: Power Adapter: Same Voltage, Less Wattage

That was my plan, but I was looking for a more scientific explanation.  I mean, from what I can tell, less Watts would mean the battery would charge faster, as long as the Volts are up to par.

*****************************************************************************
| Lenovo Y560 06465BU | i7-740QM 1.73GHz | ATI HD 5730 1GB | 15.4" HD LED 1366x768 LGD229 | Intel Wi-Fi 1000 | Win 7 HP x64 | Bluetooth 2.1 + EDR | 3dMark06 8189 | BIOS v62
Retired Moderator
Retired Moderator
Posts: 13,719
Registered: ‎12-07-2009
Location: CZ
Views: 461
Message 4 of 7

Re: Power Adapter: Same Voltage, Less Wattage

if you want to charge your computer fast, shut it down Smiley Happy
sorry about the less explanation but i'm not expert on batteries. hope some1 can answer your question.

http://www.krasotaiskusstva.com
Meetloaf13
SCSI Port
Posts: 94
Registered: ‎11-05-2010
Location: USA
Views: 460
Message 5 of 7

Re: Power Adapter: Same Voltage, Less Wattage

Hehe, that would help =]

 

Sorry if I sounded offish.  I appreciate your help here and all over the forums.

 

Just trying to understand the science a little bit =]

*****************************************************************************
| Lenovo Y560 06465BU | i7-740QM 1.73GHz | ATI HD 5730 1GB | 15.4" HD LED 1366x768 LGD229 | Intel Wi-Fi 1000 | Win 7 HP x64 | Bluetooth 2.1 + EDR | 3dMark06 8189 | BIOS v62
Retired Moderator
Retired Moderator
Posts: 13,719
Registered: ‎12-07-2009
Location: CZ
Views: 458
Message 6 of 7

Re: Power Adapter: Same Voltage, Less Wattage

still, whatever the answer is, it'd be better to find the one same specifications as the original one.

if you use different batteries, you can use it but as you can read on your manual, it may cause heating, fire, main-board or battery issue(s).

http://www.krasotaiskusstva.com
Meetloaf13
SCSI Port
Posts: 94
Registered: ‎11-05-2010
Location: USA
Views: 456
Message 7 of 7

Re: Power Adapter: Same Voltage, Less Wattage

Yes, from what I've read, less wattage would be perfectly fine, but once you start revving your CPU/GPU, it is potential you would start draining your battery WHILE plugged in.

 

So, OEM it is, since no one else sells the 120W variant that I can find.

*****************************************************************************
| Lenovo Y560 06465BU | i7-740QM 1.73GHz | ATI HD 5730 1GB | 15.4" HD LED 1366x768 LGD229 | Intel Wi-Fi 1000 | Win 7 HP x64 | Bluetooth 2.1 + EDR | 3dMark06 8189 | BIOS v62

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