K42JB Battery, CAD$Coming Soon! Batteries For ASUS K42JB Laptop Computer

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K42JB Battery, CAD$Coming soon! Batteries For ASUS K42JB Laptop Computer, 4400mAh, 63Wh , 14.4V, Black , Li-ion

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ASUS K42JB Replacement Battery 4400mAh, 63Wh 14.4V Black Li-ion

Battery ID:	NAA42K524400B8
Battery Description:	Battery For K42JB
Battery Type:	Rechargerable Li-ion Battery
Battery Volt:	14.4V
Battery Capacity:	4400mAh, 63Wh
Battery Color:	Black
Note:	Please Note: 14.4V NOT Compatible with 10.8V or 15V
Battery Weight:	414g
Battery Size:	271.70 x 48.40 x 22.10mm
Battery Cells:	Grade A, 8 Cells
Condition:	Brand New, Replacement Battery, 1 Year Warranty
Buy Note:	For correct laptop battery, Pls carefully check original battery's shape, model, volt, interface location, fixed screw hole location, number of wires...

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K42JB Battery, CAD$Coming soon! Batteries For ASUS K42JB Laptop Computer, 4400mAh, 10.8V, Black , Li-ion

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1 Year warranty Fast Shipping 30 Days Money Back  Ask a Question         Share This Item
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https://www.ca-laptop-batteries.com/battery-pack-for-asus-k42jb-laptop-35911.html#516

Genuine ASUS K42JB Battery For laptop 4400mAh, 10.8V, Black , Li-ion

Battery ID:	NAA32K524400B6
Battery Description:	Battery For K42JB
Battery Type:	Rechargerable Li-ion Battery
Battery Volt:	10.8V
Battery Capacity:	4400mAh
Battery Color:	Black
Note:	Please Note: 10.8V NOT Compatible with 14.4V or 15V
Battery Weight:	319g
Battery Size:	270 x 44.43 x 22.73mm
Battery Cells:	Grade A, 6 Cells
Condition:	Original / Genuine Battery - 1 Year Warranty
Buy Note:	For correct laptop battery, Pls carefully check original battery's shape, model, volt, interface location, fixed screw hole location, number of wires...

Quantity	2-4	5-9	10-19	20-49	50+
Discount	5%	8%	10%	12%	15%

• In Stock
• Original price: CAD$ 69.94
• Sale Price:
  
  CAD$ 55.25
  ( Updated: Apr 2024 In stock)
• You Save: CAD$ 14.69

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Genuine ASUS K42JB Battery For laptop 4400mAh, 10.8V, Black , Li-ion
( 3-11 days free Shipping In Canada. )

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K42JB Battery, CAD$Coming soon! Batteries For ASUS K42JB Laptop Computer, 5600mAh, 84Wh , 15V, Black , Li-ion

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1 Year warranty Fast Shipping 30 Days Money Back  Ask a Question         Share This Item
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https://www.ca-laptop-batteries.com/battery-pack-for-asus-k42jb-laptop-35911.html#1017

Genuine ASUS K42JB Battery For laptop 5600mAh, 84Wh , 15V, Black , Li-ion

Battery ID:	NAA42K525600B8
Battery Description:	Battery For K42JB
Battery Type:	Rechargerable Li-ion Battery
Battery Volt:	15V
Battery Capacity:	5600mAh, 84Wh
Battery Color:	Black
Note:	Please Note: 15V NOT Compatible with 14.4V or 10.8V
Battery Weight:	439g
Battery Size:	270 x 49.7 x 22.71mm
Battery Cells:	Grade A, 8 Cells
Condition:	Original / Genuine Battery - 1 Year Warranty
Buy Note:	For correct laptop battery, Pls carefully check original battery's shape, model, volt, interface location, fixed screw hole location, number of wires...

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K42JB Battery, CAD$Coming soon! Batteries For ASUS K42JB Laptop Computer, 5200mAh, 10.8V, Black , Li-ion

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https://www.ca-laptop-batteries.com/battery-pack-for-asus-k42jb-laptop-35911.html#2437

ASUS K42JB Replacement Battery 5200mAh 10.8V Black Li-ion

Battery ID:	NAA32K525200B6O
Battery Description:	Battery For K42JB
Battery Type:	Rechargerable Li-ion Battery
Battery Volt:	10.8V
Battery Capacity:	5200mAh
Battery Color:	Black
Battery Weight:	319g
Battery Size:	270 x 44.43 x 22.73mm
Battery Cells:	Grade A, 6 Cells
Condition:	Brand New, Replacement Battery, 1 Year Warranty
Description:	Please note this is a replacement battery, 5200mAh is Compatible with 4400mAh.
Buy Note:	For correct laptop battery, Pls carefully check original battery's shape, model, volt, interface location, fixed screw hole location, number of wires...

Quantity	2-4	5-9	10-19	20-49	50+
Discount	5%	8%	10%	12%	15%

• In Stock
• Original price: CAD$ 61.25
• Sale Price:
  
  CAD$ 48.38
  ( Updated: Apr 2024 In stock)
• You Save: CAD$ 12.87

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ASUS K42JB Replacement Battery 5200mAh 10.8V Black Li-ion
( 3-11 days free Shipping In Canada. )

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Question about K42JB laptop battery ( From internet ):

Why do K42JB laptop batteries degrade so fast?

The more you use your K42JBbattery the quicker it loses its "charge."  Batteries have a limited number of "cycles" (or charges and discharges).  This number used to be in the low 100s about five years ago, but is now reaching the point of almost 1000.

Honestly, if you use your battery regularly, I would expect it to lat as long as yours has.  It's sort of just the expense involved with using a laptop regularly.  Think of it like your car: Parts wear out.

It's a problem that scientists have struggled to solve because they couldn't figure out what was causing such sudden and rapid battery deterioration.

But now researchers at the US Department of Energy have identified why rechargeable batteries lose their ability to hold a charge over time.

Working with lithium-ion batteries, which are the most commonly used type of battery in consumer devices, the researchers were able to map their charge and discharge process down to a few billionths of a metre to find exactly how degradation occurs.

Their research appears in a pair of studies published by Nature Communications, and according to Matt Safford at Smithsonian Magazine, two main culprits in battery degradation were identified:

"The first: microscopic vulnerabilities in the structure of the battery material steer the lithium ions haphazardly through the cell, eroding the battery in seemingly random ways, much like rust spreads across imperfections in steel.

In the second study, focused on finding the best balance between voltage, storage capacity and maximum charge cycles, researchers not only found similar issues with the ion flow, but also tiny accumulations of nano-scale crystals left behind by chemical reactions, which cause the flow of ions to become even more irregular after each charge."

Running batteries at higher voltages also led to more ion path irregularities, and thus a more rapidly deteriorating battery."

We should expect to replace K42JB laptop battery every 1-2 years. If it lasts longer, that's great, but I would anticipate replacing it around then.

How do I check whether K42JB laptop battery is dead or not?

1. Press F8 when booting up your K42JB laptop.
2. At the bottom after the booting options, there will be a system diagnostics.
3. After selecting that, your system will automatically check the proper working of every part (hardware) of your laptop.
4. That should do it. To be safe, try disconnecting and then connecting the battery again before the diagnostics.