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Very basic car battery question

The internet says positive should be reconnected first, but that's not as easy as it should be. What's the best option? [more inside]
posted by notquitemaryann on Jul 16, 2014 - 13 answers

Canon S100 battery pack error

My Canon S100 is just two years old (so out of warranty). I bought 2 batteries with it, and two more generics a year later. Now when I put any of the four into the camera I get a black screen with white text saying, "Change the battery pack." [more inside]
posted by acorncup on Jul 1, 2014 - 5 answers

Android tablet with best battery life?

My cheapo Android tablet finally gave up the ghost. I'm in the market for a new, nicer one and thought about getting the Nexus 7*. But searching around, it seems to have a lot of problems with battery life, even when on stand-by. I don't play games or watch videos or even listen to music much on a tablet. My main use case is reading and annotating pdf articles and books, especially when traveling (long flights) when battery life is kinda important. Are these battery life concerns for the Nexus 7 founded? Is there another Android** tablet that does better? [more inside]
posted by bluefly on Jun 14, 2014 - 15 answers

This defeats the purpose of a cell phone

Phone battery won't hold a charge-what can I do? [more inside]
posted by geegollygosh on Apr 22, 2014 - 12 answers

Laptop battery replacement: worrywart edition

I have a Lenovo Ideapad Z470, and the battery is pretty shot. I've been unable to find a replacement battery for this model through Lenovo's own site. I also can't seem to find an exact match for the one I have through third party selling. Current battery: labeled Li-ion 20, model # L09S6Y02. Closest match I found online, which claims that it's compatible with my laptop (but I could find no actual evidence): Li-ion 00, model #L08S6Y02. Put my mind at ease, Mefites: is this new battery compatible with my laptop? (And if I should return it, where should I get a battery, because searching Amazon for this kind of thing has been annoying.)
posted by TwoStride on Apr 12, 2014 - 3 answers

Help me not get swindled by car mechanics

New (6 month old) car battery has died twice in the past month. From the pattern it's been showing, can you help me figure out what the issue might be, and help me avoid getting swindled in my attempt to get it fixed? [more inside]
posted by raztaj on Mar 1, 2014 - 20 answers

Where can I buy a Lenovo X220-compatible charger in DC today?

Right now I'm at the airport, waiting to fly into DC, and just realized I forgot my charger. I'll see what I can pick up at my layover, but I would like to a) not fry my laptop and b) continue to use my laptop. I would like to buy the charger after checking into my hotel. I will not have a car. Relevant facts: 1) The X220 is the small Lenovo Thinkpad (not touchscreen.) 2) Staying in Dupont Circle 3) No car
posted by chesty_a_arthur on Feb 19, 2014 - 8 answers

NiMH Battery Chargers that work

I have a good mix of AAA, AA, C, D & 9V rechargeable batteries. Are the mindblowingly-expensive Powerex chargers the only game in town for getting a decent charge, or are there other options? [more inside]
posted by scruss on Feb 15, 2014 - 13 answers

You remind me of the babe.

Or what do I have to look for on a portable generator to recharge my camera and tablet. [more inside]
posted by Fermin on Feb 11, 2014 - 11 answers

Nexus 7 battery takes forever to charge

I have an 8-GB Nexus 7 that's about a year and a half old. Its battery life seems fine, but the actual charging takes an unreasonable amount of time. When it was new, it charged in about 2.5 hours; last night it took 7 hours to go from 30% to 60%. I'm using the adapter and cable that came with it. Is there anything I can do to make my device charge faster?
posted by zeptoweasel on Jan 8, 2014 - 11 answers

Android (Nexus 5) battery questions / issues... ?

I'm running the latest version of Android on a Nexus 5. I have location services enabled. The battery sucks and I'm trying to understand what exactly is going on. [more inside]
posted by dobbs on Jan 4, 2014 - 17 answers

13 years old, my car’s about to hit puberty.

I have a 2001 Prius and it needs a new hybrid battery. Does anyone in Milwaukee, WI, know of a shop that can do this? [more inside]
posted by thebestsophist on Dec 19, 2013 - 4 answers

My iPhone doesn't do well in the cold. What can I do?

I bought my iPhone last February. During what remained of that Winter, I would take it with me when cross-country skiing, walking outside, or taking the bus to work. It seemed to operate just fine, as had my prior phone which was a Samsung. This Winter, however, the cold weather seems to be seriously affecting the phone's battery life. The battery drains quickly when I'm outside and sometimes suddenly goes from 20% or more to dead. Today, I went out skiing with the phone. I was listening to a podcast and using an exercise app to track my speed and distance. When I started out the phone had 55%, but it died after only 10 minutes. The temperature was -10F/-23C. I've also had it drain quickly after waiting to catch the bus. Is there anything I can do to solve this problem and continue to use the phone in the Winter? Is this something the folks at the Genius bar can help with? Should I create some sort of insulated pouch for the phone? I realize that temperature can affect batteries, but I'm surprised because I didn't have this problem other winters. I know I've taken phones out in colder weather than today without such a sudden failure.
posted by Area Man on Dec 7, 2013 - 14 answers

Macbook pro battery life

My macbook pro battery life is awful, and it shouldn't be. What can I do about that? [more inside]
posted by R a c h e l on Nov 26, 2013 - 15 answers

Searching for a Lumix Li-ion Replacement Battery in Austin

I'm trying to find a replacement battery for my Panasonic Lumix camera in south Austin, TX. The camera is a relatively new model (DMC-FZ200), and I'm having a hard time finding local stores that might carry the battery in stock. The battery is a DMW-BLC12PP 7.2V, 1200mAh/8.7Wh Li-ion. No time for ordering, I need to find something and pick it up tonight. Thank you for your help!
posted by nickerbocker on Nov 14, 2013 - 2 answers

time! time! who's got the time?

is there any place in the bay area that doesn't charge a fortune to replace a watch battery? [more inside]
posted by koroshiya on Nov 1, 2013 - 11 answers

Android App for battery usage/management for older, non-technical user

I'm helping an older gentleman get going with his first smart phone. He is traveling without a car, camping without power, battery consumption management on the phone is CRITICAL. The app needs to FIRST be simple to setup and use, second allow him to easily see what is using the battery, and third have tools to kill wasteful usage. Free would be nice, but willing to pay for a SIMPLE app that does what he needs without confusing him with bells and whistles. [more inside]
posted by jcdill on Sep 23, 2013 - 12 answers

Tell me where to buy / how to make a DC light timer

Our chickens [!] have trouble hopping up on their roost at dusk. We have glued a keychain LED to the inside of the coop and have been turning it on every night, and then off when they are roosting. I would like to have this turn on automatically at dusk and then off again an hour later. If this were AC I would buy a timer from the dollar store. For DC do I need to build something? [more inside]
posted by Acari on Sep 8, 2013 - 8 answers

Cellphones refuse to charge batteries

This has happened over at least 3 different cellphones, from HTC and Samsung. The battery will work fine for months, and then the phone will lose the ability to recognize that it is charging. [more inside]
posted by IAmBroom on Sep 8, 2013 - 12 answers

Ford Fusion Cigarette Lighter: Re-wire to Turn On and Off with Ignition?

I have a 2010 Ford Fusion and a lot of electrical gadgets which plug into the cigarette lighter. The car I previously drove (for over ten years) had a cigarette lighter which turned itself on and off with the ignition. The Fusion, however, leaves the lighter socket on all the time. Because of this, I sometimes forget to unplug things from the cigarette lighter and end up with a dead battery after a day or two with the car parked. Is there some relatively-easy way for me (or a mechanic) to re-wire the cigarette lighter so that it powers itself on and off with the ignition? If so, how? [more inside]
posted by Juffo-Wup on Sep 4, 2013 - 11 answers

Dell Vostro 1400: Battery not being recognized. Possible culprits?

Is it even possible to replace the component that will allow my battery to be recognized again? [more inside]
posted by lizarrd on Jun 17, 2013 - 2 answers

Camera phone with easily removable SD card and battery

I am looking for a phone that has a camera and easily removable data storage and battery. It does not have to be a new phone, so any model from the past few years that has these features would be appropriate. [more inside]
posted by asok on Jun 14, 2013 - 3 answers

Watch adjustment

I have this type of watch. The manual suggests that I should get Timex to repair the battery. I'm hoping to be able to do it myself and save a few bucks. However, I don't really see any way to get the back off. I also want to adjust the band as it's too large for my wrist. But, again, I really have no idea how to do this. Hoping someone here can tell me if this is something I'd be able to do from home (and tell me how to do it) or whether I should take it to a jeweler.
posted by Proginoskes on May 19, 2013 - 9 answers

Is it a bad idea to keep a MacBook Pro plugged in while charged?

I recently acquired a new MacBook Pro, with a retina display. It's a sealed unit, with no user-replaceable battery, so I'm obviously interested in maintaining the battery life. I noticed that the new T-shape mag safe connector is not very grippy, and falls out all the time. So I called Apple to see whether the constant unplugging/plugging was a bad idea, and the rep actually said at one point that it was a bad idea to keep the laptop plugged in when it was charged (with the green LED showing in the adapter). I confirmed that this was what he was saying. So does anyone know if this is true? Because I've always kept my laptops plugged in, all the time. [more inside]
posted by carter on May 16, 2013 - 13 answers

MacBook Pro Battery Life Question

Greetings - I "inherited" a MacBook Pro last year. It was a Apple MacBook Pro Core 2 Duo 2.4Ghz from Spring 2008. So it was 4 years old when I got it and I was told that the battery was dead and as long as I kept it plugged in, it worked fine, however, I would need a new one. So last year, I purchased a new battery and installed it. However, I am still noticing that the battery life is horrible. It seems like when I am using it to type a document or check emails and surf the web, etc, I literally can watch the battery drain. I would assume that it might hold a charge of about an hour and a half maybe? Is there any way I can "test" it to see what my actual battery life if? To ensure there isn't something else going on? Any suggestions would be helpful. Thanks,
posted by dbirchum on May 3, 2013 - 13 answers

Samsung Transfrom Ultra Battery Problems

Transform Ultra with an overheating, fast-discharging, spontaneously-turning-off battery. [more inside]
posted by Snyder on May 1, 2013 - 1 answer

Why is my laptop now choosy about sockets and what do I do about it?

My Acer 5742 has become choosy about which plug sockets it will charge from. Why? Do I need a new battery? [more inside]
posted by mister_kaupungister on Apr 27, 2013 - 3 answers

Starter woes?

Car was starting intermittently (power to the dash lights, etc., but zero activity from the starter) as the battery reached the expected end of its life. So, new battery. Same problem. The shop that has the car tells me that a new battery sends a relatively high amount of power to the starter and that this can cause problems with it (gears, etc.) This doesn't sound ludicrous, but I know enough about cars to know how much I don't know. Here's hoping the knowledgeable people (for whom I have vast respect and gratitude) 'round here can share their thoughts. Thanks! [more inside]
posted by ambient2 on Apr 27, 2013 - 10 answers

Laptop / Netbook that runs cool and has long battery life

Interested in a Netbook or lower power laptop that runs cool (doesn't require external cooling like this) and has long (6-8 hour) battery life. Would like to run Windows 7 so Chromebook is not a good candidate for me. And of course want to come in around $200. I know there a lot of candidates here but would really appreciate user's real life experience. Thanks.
posted by gilast on Apr 23, 2013 - 6 answers

Mountain Lion, New SSD - what's destroying my battery life?

So, I've made the fatal mistake of performing several upgrades at once, and I could do with some advice on where to go now... is my problem with charging time and battery life my new SSDs, my new OS, or something else entirely? Generic snowflake details to follow: [more inside]
posted by running order squabble fest on Feb 24, 2013 - 7 answers

Is it wise to replace the dead battery in my MacBook?

I have an older MacBook I use when travelling (four or five times a year), and then the odd occasion when I am away from my office desktop. The battery on the MacBook died a few months ago, and I am guessing partially because I haven't been using it frequently enough. I am hesitant to replace the battery, figuring the same thing will happen again, is that right? Is there a downside to not having a working battery on the computer itself? And lastly, is there a problem with leaving the dead battery in the computer?
posted by nanook on Feb 15, 2013 - 7 answers

Which is the best website to purchase a new phone battery from?

I have a Orange San Francisco smartphone. It's also sold as the ZTE Blade. I'd like a new, more powerful battery for it. Where is the best place to purchase one from? I can find lots of sites selling them, but I'm having difficulty picking out the non-sketchy one(s) from the sketchy ones.
posted by Solomon on Feb 15, 2013 - 2 answers

New battery, no power?

Please help me think through this car battery problem. I have a new battery, but no car power. Details inside. [more inside]
posted by griseus on Jan 24, 2013 - 14 answers

Help me with my iPhone 4 Battery Life!

I have an iPhone 4 and since the iOS 6 update, my battery life is horrible! Help! [more inside]
posted by dbirchum on Jan 15, 2013 - 14 answers

Knife the Mac

The Apple Store Genius fixed my Macbook's problem while I was in the store, but now that I'm home again I'm back to square one. Help. [more inside]
posted by mudpuppie on Jan 1, 2013 - 22 answers

VADO HD Battery - Help Needed Please

Where can I find a replacement generic battery for VADO HD? [more inside]
posted by watercarrier on Dec 26, 2012 - 0 answers

Need a hobbyist electronics shop in Toronto

Where in Toronto can I buy small cylindrical rechargeable 3.7V Li-ion batteries like the UltraFire, hopefully at a reasonable price? (or maybe they were 3.6V, I can't recall) [more inside]
posted by PercussivePaul on Dec 23, 2012 - 5 answers

Reduce 12v to 9v or 5v

How can I control/reduce the amount of power from a 12v battery? [more inside]
posted by powpow on Dec 22, 2012 - 6 answers

Best Low-Drain, Long-Life Battery

How can I continuously run a 3W - or less - LED light with +/- 350 lumens as long as possible (1 year minimum) with a relatively compact battery source? [more inside]
posted by xod on Nov 14, 2012 - 18 answers

Help assuage my concerns about my little old car!

Please help me determine what happened to my car recently - was it the battery, the alternator, or something else? [more inside]
posted by schmoo on Nov 12, 2012 - 12 answers

How to choose a replacement scooter battery?

Which batteries can I purchase to replace the original from my scooter, a 2007 Honda Metropolitan? [more inside]
posted by cupcakeninja on Nov 6, 2012 - 6 answers

New Paperweight Anyone?

My Android phone, a Samsung Nexus S, operates on Jellybean 4.1.1. Since the latest update, I've noticed a dramatic decline in the battery life--it will go from fully charged to dead within 3 hours of intermittent use, regardless of whether I'm on a 3G or Wifi connection. How can I optimize the battery life on my phone without losing its functionality? [more inside]
posted by therewolf on Oct 9, 2012 - 12 answers

Car Battery Conundrum

I have a brand new car battery. My car has some issue that is (still) draining the battery, after I already had a mechanic look at and fix what was supposedly the issue. What can I do so that my battery doesn't go dead and get ruined over the winter while the car is idle? [more inside]
posted by furious on Oct 5, 2012 - 17 answers

Used lithium-ion batteries sold as new?

I suspect that unscrupulous dealers buy used Lithium-ion batteries, reset or replace the circuitry so that the capacity and charge cycle count are as-new, and then resell the batteries as new. How can I collect evidence for or against this hypothesis?
posted by beniamino on Oct 3, 2012 - 6 answers

Why does my iPone suddenly have horrible battery life?

What could cause the sharp drop in battery life for my iPhone 4S? Even if fully charged, it will deplete within 5-6 hours of idle time. [more inside]
posted by Tanizaki on Sep 24, 2012 - 13 answers

waterdamaged macbook pro battery difficulties

so i "fixed" a relative's water-damaged macbook pro, but it still has issues. [more inside]
posted by camdan on Sep 17, 2012 - 8 answers

How often do I really need to drive my car?

How often do I really need to drive my car? (goal: keeping the battery charged, engine happy, etc.) [more inside]
posted by dizziest on Sep 11, 2012 - 17 answers

Electronics in St. Petersburg, Russia

I messed up my travel packing, and I now need to buy a charger for a Canon S95 camera battery in St. Petersburg, Russia. Is there any place where I could get one for a reasonable price? I'm staying downtown.
posted by Jakey on Sep 10, 2012 - 4 answers

Solar powered USB help?

Calling all electrical engineers! Need some clarity on how to figure out solar charging rates and consumption of a USB device... [more inside]
posted by griffey on Sep 8, 2012 - 3 answers

Is this another useless superpower?

Do other peoples' cellphone batteries spontaneously discharge, or is it just me? [more inside]
posted by still_wears_a_hat on Sep 6, 2012 - 15 answers

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