Could someone give me a rough estimate on how long I can expect my cell phone battery to last. I am sure there is a wide variance, but I am just looking for an average life expectancy. I use it every day and charge it in the evening. I use it approximately 3 hours a week. Thanks in advance.
posted on Jul 24, 2008 - 6 answers

I bought the POWER TOUR Amp and it's really awesome. However I want to modify it and I don't know much at all about electronics. [more inside]
posted on Jul 5, 2008 - 8 answers

What battery does the Robin's Egg Wireless Vibrator use? If anyone knows the type of batteries in its remote, then even better. For reference, this is the most comprehensive list of batteries I know of. Thanks!
posted on Jul 2, 2008 - 7 answers

Will a universal Craftsman charger work with my 15.6V drill? [more inside]
posted on Jul 1, 2008 - 2 answers

Why is there no bat-acitor? (hybrid battery/capacity w/best of both) Is there some limitation in physics, chemistry, materials, etc. that prevents it, or has it just not been invented yet? [more inside]
posted on Jun 10, 2008 - 24 answers

iBook G4 battery is out of juice. Computer won't start up... even when AC adapter is plugged in. Is there something else going on? [more inside]
posted on Jun 10, 2008 - 7 answers

Can anyone help me figure out what kind of power source I need for my outdoor art project? [more inside]
posted on Jun 5, 2008 - 10 answers

My laptop gives a "system timer error" and so I probably need some guidance in replacing my laptop's CMOS battery [more inside]
posted on Jun 3, 2008 - 9 answers

Where can I get a cheap(er) battery for my aging 2 year old Macbook? I have tried Apple, but the price is pretty steep! I'm in Australia (Sydney specifically), if that makes a difference.
posted on May 29, 2008 - 6 answers

Does anyone know where I can find the operating software and a manual for an HP Powerwise 2100 Battery Backup? APC bought HP's battery backups unit in 1994, but this unit seems to work great. I want to control it from my PC but have no software and no instructions. I've visited all of the manual sites and software download sites I can think of.
posted on May 27, 2008 - 1 answers

Is there any way to modify or use an external part to get an Alesis Micron to run on batteries? [more inside]
posted on May 16, 2008 - 3 answers

Help my buy a new laptop battery! [more inside]
posted on May 10, 2008 - 7 answers

Is there an mp3 player with a user-replaceable battery? [more inside]
posted on May 4, 2008 - 16 answers

I am charging at least 20, but up to 30 electronic components. Each will draw 300mA at 5-7VDC. What sort of power supply do I need? [more inside]
posted on May 1, 2008 - 10 answers

How to unlock my VW golf car stereo? [more inside]
posted on Apr 20, 2008 - 6 answers

My new off-brand laptop battery (Dell Latitude X1) suddenly stopped working after about three weeks of use. The BIOS says "The system could not communicate with this battery," and Windows says "No battery detected." Is there anything I can do besides shell out for an OEM battery? Is there any way to reset the internal electronics in the battery itself? [more inside]
posted on Apr 7, 2008 - 2 answers

Two, almost certainly related problems: My MacBook has taken to turning itself off while still showing as having a high battery charge. It has turned itself off while showing it at 36 minutes of battery time left. coconutBattery says that my current battery capacity is only at 54% of the original. Anything I can or should do about this? [more inside]
posted on Apr 5, 2008 - 12 answers

Help with my friend's car trouble... [more inside]
posted on Mar 30, 2008 - 12 answers

I want to run Folding@Home on my MacBook Pro, but I want it to only fold while plugged in. Is there a way I can do this? [more inside]
posted on Mar 24, 2008 - 6 answers

I've recently bought a old Palm V with OS 3.1. I like its elegance, simplicity and feel. I'm not interested in the email function, but I see there are upgrades available. [more inside]
posted on Mar 24, 2008 - 4 answers

Why did my cell phone battery start dying after a few hours? [more inside]
posted on Mar 10, 2008 - 10 answers

Clueless homeowner question: Our sump pump (which has a battery for backup) is beeping and blinking, telling me to replace the battery. It looks like a car battery, but my son (he who knows how stuff works) is away ay school. What kind of battery do I get? Where do I get it? And, most scary, how do I (safely) unhook the old one and replace it with the new one. Don't assume I have even the most basic skills or knowledge.
posted on Mar 8, 2008 - 11 answers

Jeep Repair: I have a 97 Grand Cherokee (actually, the badge reads "Cheeroke" for undetermined reasons). I performed some recent seemingly-unrelated maintainence./ Why isn't it starting?! [more inside]
posted on Feb 12, 2008 - 14 answers

Can I fit a bigger battery in this UPS? [more inside]
posted on Feb 12, 2008 - 10 answers

Do electrical devices running on your car's electrical system affect gas mileage? [more inside]
posted on Feb 7, 2008 - 18 answers

Does leaving a lithium-ion batter in a charger shorten its life? [more inside]
posted on Feb 2, 2008 - 10 answers

How much money am I costing, say, Starbucks if I charge my laptop there every day? [more inside]
posted on Jan 28, 2008 - 14 answers

My Car wont start, It just clicks when i try and eventually stops doing anything! [more inside]
posted on Jan 19, 2008 - 22 answers

What's the deal with NiMH AA and AAA batteries being 1.2V? [more inside]
posted on Jan 11, 2008 - 32 answers

2008 Toyota Camry Hybrid Battery Replacement [more inside]
posted on Jan 4, 2008 - 4 answers

My laptop battery drains even when the computer is turned off. [more inside]
posted on Dec 30, 2007 - 8 answers

Can I diagnose my electrical problems with a small multi-meter? [more inside]
posted on Dec 30, 2007 - 7 answers

I don't really use my car much in the winter but I park it outdoors. How do I maximize its chances of survival? [more inside]
posted on Dec 30, 2007 - 7 answers

Anyone have experience with 3rd party batteries for Apple portables? [more inside]
posted on Dec 18, 2007 - 6 answers

Why did my battery start to smoke in my lovely (but old) car? [more inside]
posted on Dec 17, 2007 - 10 answers

I have a need for a CCTV system in an area with no power or wired connections. The images/video would only need to be retrieved in the event of a break in or something of that ilk. What are my options? [more inside]
posted on Dec 14, 2007 - 2 answers

My wife has insisted for some time that you can 'train' a battery in order to optimize its performance and lifetime. [more inside]
posted on Dec 11, 2007 - 14 answers

My girlfriend has a Dell Inspiron, and the battery light won't stop flashing. [more inside]
posted on Dec 9, 2007 - 16 answers

Mrs. mysterious1der's laptop (M55-S331) won't keep time accurately. I've torn apart and repaired (board swaps, not actual board level repair) dozens of Dell laptops, but this is my first Toshiba. Lo and behold, the CMOS battery is soldered to the motherboard. Do I either have to unsolder it and resolder a new one, or get a new motherboard? [more inside]
posted on Dec 9, 2007 - 5 answers

Did my cat fry my laptop battery? Either way, what can I do about it? [more inside]
posted on Nov 29, 2007 - 7 answers

What is going on with my cellphone? [more inside]
posted on Nov 27, 2007 - 8 answers

Help point me towards the best laptop for taking into the backcountry... [more inside]
posted on Nov 13, 2007 - 2 answers

I'm working on an electric recumbent bicycle using a Bike-E as the bike part. I want to hang my batteries below the seat by building two containers to hang on the sides of the Bike-E's alloy beam body. What's the best way to build the container? [more inside]
posted on Oct 31, 2007 - 7 answers

Why does my MP3 player run out of battery power so rapidly when I connect it to an amplifier and speakers as versus when it is connected to my headphones? [more inside]
posted on Oct 24, 2007 - 4 answers

I have a 1995 Ford Thunderbird in NYC/upper Manhattan. I suspect my battery is dead. Where can I get it replaced? [more inside]
posted on Oct 24, 2007 - 5 answers

I need to replace the battery in an old timex watch ( about 30 years old ) -- I just need to know if I need to send it somewhere or if I can get a replacement battery in a store .. if so, where or what store ? Thanks!
posted on Oct 12, 2007 - 9 answers

What is going on with my 1998 Mercury Sable? [more inside]
posted on Oct 5, 2007 - 8 answers

Is my mac battery dying or is there another problem? My macbook is almost a year old. Suddenly my battery life sucks. I just opened it up after charging it over night and it only registered 1:33 minutes left. Right now, only minutes later it is at 79% with 1:09 left. It’s dropping faster then the elapsed time. [more inside]
posted on Oct 4, 2007 - 12 answers

Where to buy a laptop battery? [more inside]
posted on Oct 3, 2007 - 9 answers

My new off-brand battery for my ibook G4 won't charge past 49%. Help! [more inside]
posted on Sep 27, 2007 - 5 answers