Dead battery--is there a problem with my car? [more inside]
So the modern practical uses for these are in guitar effects, alarm clocks, and smoke detectors. leave your effects on and they die in a couple of hours. as a backup to your alarm clock, it dies in four or five hours (not even powering the LCD). i have no idea how long these things last in a smoke detector, but my guess is the next housefire and i'm a dead man. why do these batteries suck so bad? why do we still use them? why hasn't science come up with anything better?
How long does your iphone (3G) battery last? [more inside]
The battery cap on my Mag-Lite is stuck. Any ideas as to how to remove it? [more inside]
Why won't my car start? [more inside]
I'm looking for a simple "let's listen to music while we're camping far away from our cars" power solution. [more inside]
Googlefu = fail. Answer not in owners manual. What is the cold cranking amps rating for the battery which is recommended for the 2002 Nissan Sentra SER Spec V, 2.5 L. Or alternatively, what battery do I need to buy. [more inside]
I need to buy a new battery for my Dell Inspiron 6000, and I've found two options: A and B. Obviously A is more expensive, but it has a higher mAH. I by default prefer the longest battery life possible, but I also don't know jack about laptop batteries. Searching the google has given me only whiffs and bits of information. Tell me hive, is 8000mAH better than 6600mAH enough to warrant $20 more? What can I expect from each, very roughly, in terms of hours of continuous use between charges? Also, feel free to inform me that A and/or B are terrible sites I should not buy from.
Year old Macbook running extra hot/battery draining fast. Help [more inside]
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.
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]
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!
Will a universal Craftsman charger work with my 15.6V drill? [more inside]
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]
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]
Can anyone help me figure out what kind of power source I need for my outdoor art project? [more inside]
My laptop gives a "system timer error" and so I probably need some guidance in replacing my laptop's CMOS battery [more inside]
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.
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.
Is there any way to modify or use an external part to get an Alesis Micron to run on batteries? [more inside]
Help my buy a new laptop battery! [more inside]
Is there an mp3 player with a user-replaceable battery? [more inside]
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]
How to unlock my VW golf car stereo? [more inside]
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]
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]
Help with my friend's car trouble... [more inside]
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]
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]
Why did my cell phone battery start dying after a few hours? [more inside]
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.
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]
Can I fit a bigger battery in this UPS? [more inside]
Do electrical devices running on your car's electrical system affect gas mileage? [more inside]
Does leaving a lithium-ion batter in a charger shorten its life? [more inside]
How much money am I costing, say, Starbucks if I charge my laptop there every day? [more inside]
My Car wont start, It just clicks when i try and eventually stops doing anything! [more inside]
What's the deal with NiMH AA and AAA batteries being 1.2V? [more inside]
2008 Toyota Camry Hybrid Battery Replacement [more inside]
My laptop battery drains even when the computer is turned off. [more inside]
Can I diagnose my electrical problems with a small multi-meter? [more inside]
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]
Anyone have experience with 3rd party batteries for Apple portables? [more inside]
Why did my battery start to smoke in my lovely (but old) car? [more inside]
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]
My wife has insisted for some time that you can 'train' a battery in order to optimize its performance and lifetime. [more inside]
My girlfriend has a Dell Inspiron, and the battery light won't stop flashing. [more inside]
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]
Did my cat fry my laptop battery? Either way, what can I do about it? [more inside]
What is going on with my cellphone? [more inside]