ion laptop
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 HYPE 61WH 16V 19VOutput External Batteries for Universal Li Ion Laptop Battery  US $39.89
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HP Pavilion XT5400 Battery Replacement
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DescriptionBatteries from LaptopTraveller are made using the highest quality cells available and utilize all of the proper logic boards, thermal protectors, thermistors and circuit breakers to ensure |
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HP Pavilion DV2137tx Battery Replacement
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DescriptionBatteries from LaptopTraveller are made using the highest quality cells available and utilize all of the proper logic boards, thermal protectors, thermistors and circuit breakers to ensure |
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HP Pavilion DV6406 Battery Replacement
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DescriptionBatteries from LaptopTraveller are made using the highest quality cells available and utilize all of the proper logic boards, thermal protectors, thermistors and circuit breakers to ensure |
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DEWALT DW920K-2 1/4-Inch 7.2-Volt Cordless Two-Position Screwdriver Kit
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DescriptionFast, efficient, and versatile, the DEWALT DW920K-2 1/4-Inch 7.2-Volt Cordless Two-Position Screwdriver Kit features heavy-duty construction, the convenience of variable speed, and a 7.2-volt battery pack for quick charging and longer run time in small fastening applications... |
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ZTS Mini Battery Tester - ZTS MINI-MBT
Sale Price: $32.00 |
DescriptionThe ZTS Mini Multi-Battery Tester (Mini-MBT) provides a comprehensive means of testing more than 15 battery types. The Mini-MBT's microprocessor-based design makes battery testing simple - using a patented, high accuracy pulse load test... |
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ASUS Lamborghini VX6-PU17-WT 12.1-Inch Eee PC Netbook (White)
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DescriptionDriven by Style, Wrapped in PrestigeInspired by the Lamborghini Murcielago LP640 roadster, the ASUS-AUTOMOBILI Lamborghini Eee PC VX6 epitomizes elegance and power fused in perfect harmony. Clad in either shiny piano black or pearlescent white, this notebook PC contrasts and combines delicate refinement and style with sheer powerhouse performance... |
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Duracell Powerhouse USB Charger with Lithium ion battery / includes universal cable with USB and mini USB,
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DescriptionThe Duracell Powerhouse Charger offers big time power from a portable charger. It can charge two USB compatible devices at once, including your iPod, BlackBerry or Motorola phone. Recharge it over and over again by simply plugging into your computer's USB port... |
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Duracell Instant USB Charger with Lithium Ion Battery/Includes Universal Cable with USB and mini USB
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DescriptionThe Duracell Rechargeable Instant Charger gives you compact, on-demand power. It allows you to instantly charge many USB-compatible devices, such as your iPhone®, iPod®, or BlackBerry®. The Instant Charger conveniently charges through your laptop or computer’s USB port and fits most mini-USB powered devices... |
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GoPro Camera AHDBT-001 HD Hero Li-ion Battery for HD Hero Camera
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DescriptionGoPro's Rechargeable Lithium-Ion Battery (1100mAh) keeps your HD HERO camera going. This battery provides up to 2.5 hours of power on a single, full charge. And when the battery runs out of juice just charge it up again for another 2... |
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HP Pavilion DV5-1070es Battery (HP Genuine)
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DescriptionBatteries from LaptopTraveller are made using the highest quality cells available and utilize all of the proper logic boards, thermal protectors, thermistors and circuit breakers to ensure |
Is better to leave devices (cellphone, laptop) with lithium-ion batteries plugged in all the time?
I thought you were supposed to charge them fully, then let them drain almost completely, then charge them, and so on.
But this month's issue of PC World says that's only the case for (older) nickel-cadmium batteries, and that current lithium-ion batteries have "the opposite problem"—does that mean they best keep their capacity if you leave them plugged in as much of the time as possible?
That article is correct for anything with a Li-ion battery - which is ALL phones nowadays, all laptops made in the last 15 years and all MP3 players.
A Li-ion battery has a limited lifetime in terms of cycles. (normally about 400-500) One full discharge/charge cycle counts as one cycle; so discharging it 1/10th of its capacity and then charging again is 1/10th of a cycle. Thus, charging it whenever you can and keeping it on charge is best.
Footnote about leaving it on charge: the charger does not carry on feeding a trickle charge into the battery like with NiCd cells. It will stop when it is senses it is charged, and then monitor the charge level. When it self-discharges to about 98% of its capacity (this is called the charge threshold level), charging will resume once again until it is full. This cycle continues all the time you leave a device attached to its charger.
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