Slate’s Farhad Manjoo recently interviewed Isidor Buchmann, the CEO of battery-testing equipment manufacturer Cadex Electronics, about characteristics of contemporary gadget batteries and how to use them to your advantage. Note that the tips below only apply to Lithium-Ion batteries, the most popular type used in gadget today:

Keep Your Batteries Away From Heat. Heat lessens a battery’s lifespan, and unfortunately many gadgets today (especially laptops) can get very hot. The solution, aside from keeping the unit as cool as possible, is to always charge the battery when the gadget is off. When using laptops that are plugged in, remove the battery once it’s fully-charged.

Maintain an Optimum Charge Level. As Buchmann says, “you should try to keep your battery charged from 20 to 80 percent”. This means you should actually minimize letting a battery drain, and of course be mindful of overcharging it. Once the battery is full, unplug!

Charge Before Storing. Storing a battery drained of all power definitely lowers its lifespan. So if you plan to stow away that power pack for a long time, make sure to charge it to around 40 percent. Aside from prolonging the battery’s life, you’ve also got power for those emergencies.

Reset Your Battery Meter. This is tricky: some gadgets reset their power meter once you let the battery completely drain before charging it up back to full strength—a clear violation of maintaining an optimum charge level. But, if not done frequently (i.e., only when you think your gadget’s remaining power estimates are off), the damage to lifespan should be minimal.

Do you have your own proven tips on prolonging your gadget’s battery life? Remember, the longer our batteries last, the more efficient we become!

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Post from: The Gadget Blog

Courtesy jyrik

But why, you ask? Here’s Daniel Lyons’s theory

These battery-life numbers are based on a benchmark test called MobileMark 2007 (MM07). The test was created by a consortium called BAPCo (Business Application Performance Corp.), whose members are—you guessed it—computer makers and other tech companies.

Consortium member AMD recently turned tattletale, with marketing VP Patrick Moorhead citing three possible results of this apparently newfound awareness: “Either the industry regulates itself, or the FTC steps in and regulates us, or we get hit with a class-action lawsuit. I suggest the industry go with the first option.”

That third option sounds more appealing honestly: nothing like a windfall settlement to provide money for replacement batteries.

Seriously though, the real reason why battery estimates are usually off is due to good-old wear-and-tear. Disabling WiFi and lessening display brightness actually make those company-based battery life promises reachable (but still not attainable). Except of course for the reality that a battery loses capacity the more it’s used. Not only for laptops, but practically any gadget relying on rechargeable batteries.

That first marathon unplugged laptop session—usually employed after the battery has seen some use—drives this point home.

Post from: The Gadget Blog

How long will battery replacement service take?
Length of time to complete the battery replacement will depend upon the repair location and availability of service stock. In general, the following replacement times apply:

Apple Retail
Same day repair with an appointment.

Apple Mail-in
3 – 4 business days after shipment of unit to depot.

So how does that compare with other brands (prices below exclusive of taxes and shipping)?

• Dell XPS M1330 Battery – $74.37
• Original IBM / Lenovo ThinkPad Z61m, Z61p, Type 9450, 9451, 9452, 9453 Series Hi-Li-Ion Laptop Battery ( 9 Cell ) – $176.85
• Replacement Intelligent 8 Cell Li-Ion Battery L18650-8DHL, for Hewlett Packard OmniBook 2100, 3000, 3100 Series Notebook Computers. ds – $169.00

(image from Apple)

Post from: The Gadget Blog