It is currently Sun Jan 21, 2018 8:53 am

All times are UTC - 8 hours




 Page 1 of 1 [ 2 posts ] 
Author Message
 Post subject: Laptop charger voltage...
PostPosted: Tue Jan 02, 2018 5:48 pm 
User avatar

Joined: Fri Feb 01, 2002 1:01 am
Posts: 1754
Location: Mideast USA
At the beginning, the laptop battery packs were over 14V and the chargers about 18V-19V. Understandable.
Now, some laptop packs are 11V, and still use the higher supply to charge them. Why ?
Why a 12V nominal automobile 'outlet' cannot directly supply/charge a 11V laptop ?

----> https://www.amazon.com/Laptop-Battery-I ... 516HN9V2K7



_________________
- Abolish the deciBel ! -
Offline
 Profile Send private message  
 
 Post subject: Re: Laptop charger voltage...
PostPosted: Fri Jan 05, 2018 1:46 pm 
User avatar

Joined: Thu Aug 01, 2002 12:01 am
Posts: 2802
Location: San Jose CA
I think you probably could charge direct from a car but since that source is not regulated, it might e a bit hard on the battery or charging circuits. Not running, my car battery hovers at 11.4 (its a little old) and when running is 14.5. With the car running it might work OK but with the car off, you would need a fresh battery and it would still charge slow.

There may be another reason too. the charging circuit within the laptop may also have a minimum source voltage to work and had a voltage drop across itself.


Offline
 Profile Send private message  
 
Display posts from previous:  Sort by  
 Page 1 of 1 [ 2 posts ] 

All times are UTC - 8 hours


Who is online

Users browsing this forum: No registered users and 2 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to: