I'm about to purchase an aftermarket Li-ion laptop battery on eBay. However, I'm quite confused about the differences in specs for mAh and number of battery cells. Which is more important and how are they related? [more inside]
Battery For Aging Laptop: OEM or 3rd Party? I need a new battery for my four year old Mac powerbook (old one discharges within 60 mins). Like the original, it lost its endurance after 2 years and currently discharges after 60 mins of use. There are few OEM batteries still around for this thing (though I did find one on eBay). But it occurs to me that while no Apple battery could possibly be fresh at this point, the 3rd party replacement ones MIGHT be more recently made. Though I'd usually hesitate to go with a 3rd party manufacturer on something like this. Any advice? FWIW, it's a Powerbook G4 15", and battery is A1045/A1078/A1148
How do I find out which battery is compatible with my laptop? (Toshiba Satellite L300-1A8) [more inside]
Pound for pound, megajoule for megajoule, why are nickel-iron (NiFe, Edison, etc) batteries so expensive as compared to others? [more inside]
Where in Los Angeles (or within an hour's driving distance) can I get a whooooooooooole bunch of LR41 batteries on last-minute notice? [more inside]
Are there ever any other reputable vendors for laptop batteries other than the laptop manufacturer? [more inside]
I have some remote monitoring equipment out in the woods that runs on a single 12 volt deep cycle car battery. How do I keep my 12 volt battery charged using a solar panel? [more inside]
Backing up an HP laptop for the ignorant. Halp? [more inside]
How to keep iPhone usage stat from grossly exceeding actual usage and draining the battery accordingly?
Sometimes, my iPhone 3G usage statistics are totally out of line with my actual usage and the battery is drained accordingly. This doesn't seem like a settings issue but rather some application or service getting "stuck" and not turning off when the phone is locked. Any ideas what I can do to address this? [more inside]
After many years, my Canon PowerShot S20 needs a new Ni-MH battery. Canon sells a replacement battery for $49. Amazon sells a third party replacement made by Hi Capacity for about half the price. There are no user reviews for the cheaper batteries. Is the $49 Canon battery a waste of money?
Help me figure out this strange laptop battery behavior. [more inside]
My relatively new car battery (~1 yo) seems to be giving me some troubles. Is this a sign of a weak battery or something more serious? [more inside]
Should I buy a new laptop battery or a new laptop? [more inside]
Powerbook G4 (hardware?) woes, followed by death of battery LEDs. [more inside]
My computer is flaking out on me (perhaps due to my NVIDIA driver?). I can't get it to a tech support place until Thanksgiving! Help! [more inside]
Looking for battery operated Christmas/LED lights with the smallest possible battery pack. [more inside]
The "battery not charging" light on my dash went on; the mechanic told me I need a new alternator. Now the "battery not charging" light has turned itself off again. Does this mean my battery is, in fact, charging? [more inside]
I live in a busy downtown area with street cleaning every other night. As such, I am required to move the car each night, and sometimes end up parking it on a street that is notorious for car theft/etc. Lately, somebody has been somehow popping my hood, wrenching off the battery cover, and stealing my car battery. [more inside]
Can I charge a digital camera battery from America in a different country? [more inside]
My girlfriend swears that you have to shut off the AC and then the fan and then the car. Otherwise, you kill the battery AND hurt the AC. Is any of this true? [more inside]
i may have injured the electrical system on my motorcycle. [more inside]
Dell battery may be dead, or maybe it's software. I'm stumped. [more inside]
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]