LumberJocks

Eletrical question related to charging a tablet

  • Advertise with us

« back to Coffee Lounge forum

Forum topic by InstantSiv posted 03-04-2015 01:17 AM 731 views 0 times favorited 4 replies Add to Favorites Watch
View InstantSiv's profile

InstantSiv

259 posts in 1055 days


03-04-2015 01:17 AM

Topic tags/keywords: question

Hi all. I have a question…

I recently got one those new power bank/car jumper, Highly recommended btw (car battery died during the recent snow storms and I jumped my car 7 times on 1 charge, still showed 80% charge. It allowed me to wait until the weekend to get a new battery on my normal errand run), anyways… I got a charging cord for my tablet. The tablet charger’s output is 2.58 amps and the output on the power bank is 2.1 amps.

The question is is a difference in amps going to harm the battery or is it just going to charge slower?


4 replies so far

View English's profile

English

517 posts in 937 days


#1 posted 03-04-2015 09:16 PM

Yes it will just charge slower. The table may try to draw more , but most power supplies these days use a clamping circuit that will reduce the voltage to keep the current with in it’s max range.

I am assuming that you are going to plug the tablet into a USB port on the power bank.

-- John, Suffolk Virgina

View InstantSiv's profile

InstantSiv

259 posts in 1055 days


#2 posted 03-04-2015 09:41 PM

Hi English thanks for the reply.

No USB, I don’t know what the plug is called… here’s a link http://www.amazon.com/520X-M-Magnetic-Charging-Microsoft-charging/dp/B00OTD2606/ref=sr_1_4?ie=UTF8&qid=1425504880&sr=8-4&keywords=surface+pro+3+power+adapter+cord+plug

edit
Output is a DC plug 5.5×2.1mm

View firefighterontheside's profile

firefighterontheside

13442 posts in 1316 days


#3 posted 03-04-2015 09:46 PM

Some will charge slower and the phone may actually tell you, but some like my new Samsung won’t charge at all if there isn’t enough power.

-- Bill M. "People change, walnut doesn't" by Gene.

View InstantSiv's profile

InstantSiv

259 posts in 1055 days


#4 posted 03-05-2015 05:28 PM

2 Updates.

I read the amps incorrectly… DUH!

1. USB output is 2.1 amps. Since I’m using a DC plug the output is 2.5 amps.
2. I charged the tablet but something went wrong. Full charge on the battery bank and the tablet at about 20%. After an hour or 2 The battery bank was completely dead and the tablet was at about 75-80%. USB port was also non-functioning. I restarted the tablet and it went through a Windows update. USB ports work again.

Either there’s an issue charging the tablet with the battery bank or the windows update screwed something up. I am going to try and charge it again so I’ll post what happens.

Have your say...

You must be signed in to reply.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics

HomeRefurbers.com