Battery Backup Guide

asked:


Would it be possible to substitute a thin watch battery for a AA battery in a disposable camera because we found that the camera does not need the whole AA battery. Also, would it be possible to charge the flash by winding the same part used to advance the film? This is for a school project and if you have any other ideas on how to improve a disposable camera, it would really help. Thanks.
We are supposed to make the camera cheaper and more sustainable so if we could eliminate parts that could be substituted for smaller parts, it could make the camera smaller, thus cheaper.

CRP asked:


My cousin and I were debating over this last night. I unplug my laptop once it is fully charge and he said that leaving it plugged in after it is charged isn’t what damages the battery but it is charging it before the battery is low. What do you think/know? I am a college student and would like this (brand new) battery to last me for at least the next four years.

CRP asked:


My cousin and I were debating over this last night. I unplug my laptop once it is fully charge and he said that leaving it plugged in after it is charged isn’t what damages the battery but it is charging it before the battery is low. What do you think/know? I am a college student and would like this (brand new) battery to last me for at least the next four years.

azmomma2001 asked:


I just had to have a brand new alternator and battery (best one sold - or at least most expensive - at Sears Auto which was the only shop open this weekend when car broke down). At night with lights on the battery ranges from 11.8 volts when at idle to 12.5 while driving. During the day the battery ranges from 12.2 volts to 13.1 volts. I’ve been told this is too low (especially the night voltage) with brand new alternator & battery. Could there be another problem?

asked:


Would it be possible to substitute a thin watch battery for a AA battery in a disposable camera because we found that the camera does not need the whole AA battery. Also, would it be possible to charge the flash by winding the same part used to advance the film? This is for a school project and if you have any other ideas on how to improve a disposable camera, it would really help. Thanks.

Armughan asked:


I have two devices which need to be powered up by -48V DC power. One device has two components IDU and ODU (microwave equipment) the combined power consumption is 40.5 Watt(18.5+22), the second equipment has power consumption of 60Watt (multiplexer). The rectifier also has to charge the batteries for backup.

What will be the rating of the rectifier i should use? also if i need backup of 4 hours what will be the rating of the battery?
Also it will be very helpful if someone can recommend some book or pdf for better understand the power concepts.. like what if i have to make the same calculations for AC power..
Can you mention the required rectifier without battery backup.
If we take battery backup into calculations the backup time required will be 4 hours and recharge time will be 10 hours.

Freedom asked:


Hello,

I am working making a battery backup setup usually called a UPS (uninterruptible power supply) using a power inverter, a car battery and a battery charger.

I am likely going to use http://cgi.ebay.com/OSP-1500W-PURE-SINE-WAVE-POWER-INVERTER-DC-AC_W0QQitemZ350267893228QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item518d97e5ec this inverter. It delivers pure sine wave power which is what I need as I am going to be using this to power electronics such as a computer and a projector. I am a little lost on which battery charger would be best though. I’ve seen something called a ‘battery tender jr’. But I don’t know if that would be best.

It sounds ideal. What I’ve learned is that I probably want a float charger with an option of either manually or automatically once in a while charging the battery to it’s maximum for a few hours to enable longevity in the batteries life.

Any input would be appreciated.

Thanks!
I don’t think I understand your answer. It sounds likely that we aren’t on the same page as to how this is set up. Plugged into an outlet (120v)is a battery maintainer, it is then connected (12v) to a battery. The battery (12v) is connected to a power inverter, and then the inverter powers devices(120v).

sree s asked:


Hai All,

I am using Acer Aspire 4520, already 1 year over (out of warranty). Now i am not getting the battery backup. Maximum i am getting 30 minutes, i contact with the acer customer care and they told to buy a new battery and its Price is 3500. I want to know is it possible to repair the battery? Or is there any way to increase the battery backup.??? Please Help…

Benton asked:


i have an apc battery back up and i was wondering if i couls use it on a guitar amp (tube amp) without any problems

Sariful asked:


I want the answer from somebody who is using the phone .Tell me about its detailed features.It’s pros and cons. I also want a cdma handset that has a good battery backup & sound clarity in india.