Tagged Questions
4
votes
2answers
106 views
How can charge be determined?
How can software determine the amount of power or charge left in a battery (like an iPhone battery or a laptop battery)?
2
votes
2answers
124 views
Need help designing a custom box
I am doing a hobby project and I don't know much about engineering; therefore I decided to ask pros.
I have a 12v electric device that runs on Car battery only and I need to make it work if there is ...
0
votes
1answer
282 views
Mobile/Cell Phone Power consumption?
I'm trying to work out the amount of watts my mobile phone uses and thus how much power it needs to charge back to full power. My handset is the Nokia 820 Lumia and the specs are as follows:
Battery ...
2
votes
2answers
543 views
Will this power supply fit my LiPO charger? [closed]
I just got my brand new LiPO battery charger. It is require 12 volt pover supply.
I saw people are using car battery, pc power supply to this charger 12 V. but i'm not sure about current it is ...
1
vote
4answers
3k views
How much energy can be stored in a battery?
Can any one tell how much energy can be stored in the a single battery (12v) ?
If I want to store 10 kWh of energy then how to calculate the number of batteries required.
Editing notes:
power -> ...
3
votes
1answer
582 views
What component of my phone charger produces chirps and how does it do that?
My Nokia cell phone is charged with a very lightweight compact charger similar to this AC-15 (can't find the one I actually use).
While the battery is close to empty the charger works silently - just ...
4
votes
2answers
401 views
Is it just me, or is charging via usb not as good as using an outlet?
I used to charge my phone during the day at work with a USB cable (plugged into my workstation). Obviously USB doesn't provide the same amount of juice as an outlet so it took all day to charge but ...
