The AC adapter is an important component of any laptop. Without it, it would not be possible to recharge the laptop’s battery, which is essential for portability. The AC adapter also makes it possible to use the laptop without draining battery life, helping extend battery life on long days. Laptop AC adapters are not all created the same, however, and one of the distinguishing characteristics of different AC adapter designs is their polarity.

The polarity of an AC adapter refers to the way that power flows through the cable and into the laptop itself. The power coming from a wall outlet is what is known as alternating current (or AC power), but the power needed by the laptop is known as direct current (or DC power). The AC adapter converts the AC power into DC power at the correct voltage for the laptop.

The polarity of the adapter happens in the connector that is inserted into the laptop directly. The connector is comprised of a tip and a barrel. The tip is essentially the hole in the middle of the connector and the barrel is the larger area surrounding this hole. Power can only flow in one direction, either from the tip to the barrel or from the barrel to the tip. This is what is meant by polarity.

An adapter with a positive polarity means that its tip is positive and its barrel is negative. An adapter with a negative polarity means that its tip is negative and its barrel is positive. There is no standard design, so adapters and devices are often marked with a symbol to show their polarity. The side connected to the center dot is the tip, and the side connected to the symbol shaped like a C is the barrel.

It is important not to plug an adapter with the wrong polarity into a device. It will not supply power, and in some cases can cause damage to the device or the adapter. Visit Spareparts Warehouse to find a compatible adapter for your laptop, or view specific sections, such as Sony Laptop AC Adapters and Toshiba Laptop AC Adapters to find adapters specific to your laptop’s manufacturer.

Cheap Lenovo BL219 Battery - Spare battery genuine Lenovo battery, great for users who use their phone extensively whilst out and about.This Lenovo BL219 Battery is an authentic Lenovo product. Use it as a replacement or spare battery for your Lenovo Smartphone A850+ A916 A880 A889 S856. Installation is simple and easy!

LENOVO BL219 cellphone Battery [2500mAh/9.50Wh, 3.8V]

Replacement Battery>> Cheap Lenovo BL219 battery

Replace the following part numbers:
BL219
Fits the Following Models: 
Lenovo Smartphone A850+ A916 A880 A889 S856

Fast Delivery, Secure Shopping Guarantee - Cell Phone Batteries / Computer Power Supply Online Store(UK)

Batterijen Sales Nederland / België Lenovo BL219 Batterijen >> LENOVO BATTERIJEN

JP Store: Lenovo BL219 battery

Laptop AKKU: AKKUS Für LENOVO, Handy-Akku für Lenovo BL219.

Features:
All batteries have been tested before shipment
Stay connected with your family and friends by getting this battery
Prevent overcharging and extend battery life
Best replacement battery to offer long-time standby and talk time
3.8V 2100mAh high capacity, extra long stand-by time
With high capacity and low impedance
Our battery is sent out with little or no power, so please charge it for about 7 hours before using
LENOVO BL219, 
What is the best way to keep your phone charged?
With Li-ion batteries you should try and keep them at 50% or more most of the time. It is not always that easy to do, especially if you are busy and travelling around a lot. Even though it is important to try and keep it above 50% you should not allow it to fully recharge to 100%.
It won’t be the end of the world for your battery if you do but it will shorten its lifespan. Experts say a good range to aim for is keeping it between the 40-80% range. Should I ever fully recharge the battery?
Once a month you should plug it in and let it hit that 100% mark. This will recalibrate the battery and also applies to laptops.
Is it safe to charge you phone during the night?
With everyone so addicted to the little screen in your pocket the only time many of us can charge it is when we are asleep.
Most smart phones live up to their name and will stop charging when they are full.

Find the latest tablet pc batteries for sale. Our online battery store with the widest selection of li-ion battery, tablet pc battery, laptop battery, smart phone battery and so on.

GE VSBP90 battery pack for GE Medical Systems Vivid iq system

SMP QB-BAT66C battery pack for QB-BAT32C 

Dell C4K9V battery pack for DELL XPS 12 -L221x 9Q33 13 9333

IBM 39R6520 battery pack for IBM DS3000 DS3100 DS3200 DS3400 DS3300

LG BL-T3 battery pack for LG Intuition VS950 Optimus VU F100 P895 + Tools

ADP-65AW_A Laptop AC Adapter is replacement for ASUS Transformer Book TX300CA Convertible. The ASUS ADP-65AW_A adapter equivalent is guaranteed to meet or exceed ASUS original specifications. All ASUS ADP-65AW_A Adapters are brand new,1 year Warranty, 100% Guarantee Quality and Fully Test! 

ASUS ADP-65AW_A AC Power Adapter Charger

http://www.uk-online.co.uk/adapter-for-asus-transformer-book-tx300ca-convertible-for-sale-178299.html, 

AC Input:100-240V 50-60Hz
DC Output: 19V 3.42A 65W 
Adapter Fit Models: Adapter for ASUS Transformer Book TX300CA Convertible
Adapter Part Numbers:
Connecter size: 5PIN 

ADP-65AW A
ASUS ADP-65AW_A Adapter Supply Cord/Charger Tips: 1.Please make sure you have order a correct connector. 2.Plase make sure the DC OUTPUT of ASUS ADP-65AW_A adapters & Connector size are accordant before order. 3.Do not try to modify or disassemble the ASUS ADP-65AW_A4.Do not place ASUS ADP-65AW_A adapter in device for a long period of time if device is not being used. 5.Do not short circuit the ASUS ADP-65AW_A adapter terminals while you charging for your laptop. We ship to the Laptop adapter around Globe [USA, Canada, UK, NZ and Ireland, Australia]. View more laptop adapter. Contact with us if any problem on selecting power adapter.
NL:Lader voor ASUS ADP-65AW_A - Laptop-oplader voor ASUS
JP:ASUS ADP-65AW_A
DE:ADP-65AW_A NOTEBOOK-Netzteil. Das richtige ASUS Laptop adapter finden. 
NZ:ASUS ADP-65AW_A AC adapter NZ. Replacement for Acer,Apple, Compaq,Dell, FUJITSU, IBM,Lenovo,Sony and so on.
Wholesale and retail laptop adapter in UK. 
Warranty Policy
-We warrant that the ASUS ADP-65AW_A adapters sold in our website are 100% brand new and free from defects in material and workmanship.
-We never sell used or refurbished adapters.
-100% Q.C. of Our ASUS ADP-65AW_A adapter.
-Only the highest quality cells are used in our ASUS ADP-65AW_A adapter.
-Offering one year quality warranty, 30 days money back.
Attention：
1. Please make sure the DC output and tip size of ac adapter are accordant before you bid.
2. If you use the adapter for a long time,please keep it suitable ventilating and humidity.Do not put it on the skin products.
Power supplies are a frequently misunderstood-and overlooked-PC component. Also called a power supply unit or PSU, the component that supplies power to a computer.
These may be you want to look for :
dell 9RD1W Computer Power Supply
HP 611483-001 Computer Power Supply
HP 504965-001 Computer Power Supply
HP 503377 Computer Power Supply
HP 503377-001 Computer Power Supply

The Galaxy S8 and S8+ are two of the best Android smartphones available, but if you’re going to get any use out of features like Bixby Voice and Samsung’s stellar camera, you’ll want to implement a few power-saving strategies.

Fortunately, Samsung bundled in a helpful power-saving mode to keep the Galaxy S8’s battery steadily pumping throughout the day. We’ll teach you how to set it up, as well as how to implement some best practices for prolonging the life of your shiny Samsung phone.

The best part is that you don’t need to download anything to improve the health of your Galaxy S8’s battery. All you have to do is read on.

• Get rid of battery-sucking apps
• Set up power saving mode
• Get notified of bad behavior
• Go low resolution
• Automatic brightness isn’t always a savior
• Ditch the always-on display
• Ditch the Assistants, too
• Keep the screen off

UK laptop AC Adapter shop, buy cheap ADP65JH-BB 0335A1965 replacement laptop Ac Adapter, ADP65JH-BB 0335A1965 AC Adapter with low price and high quality! Brand New Notebook Charger for ASUS X55A K56CA K55A X53U k53e X53E on sale. 

ASUS ADP65JH-BB 0335A1965 AC Power Adapter Charger

http://www.uk-online.co.uk/adapter-for-asus-x55a-k56ca-k55a-x53u-k53e-x53e-for-sale-178386.html, 

AC Input:100-240V 50-60Hz (for worldwi
DC Output: 19V 3.42A,65W
Adapter Fit Models: Adapter for ASUS X55A K56CA K55A X53U k53e X53E
Adapter Part Numbers:
90-N6APW2000 / 90-N6APW2004 / SADP-65KB B / PA-1650 / ADP-65DB REV.B / SADP-65NB BB
ASUS ADP65JH-BB 0335A1965 Adapter Supply Cord/Charger Tips: 1.Please make sure you have order a correct connector. 2.Plase make sure the DC OUTPUT of ASUS ADP65JH-BB 0335A1965 adapters & Connector size are accordant before order. 3.Do not try to modify or disassemble the ASUS ADP65JH-BB 0335A1965 4.Do not place ASUS ADP65JH-BB 0335A1965 adapter in device for a long period of time if device is not being used. 5.Do not short circuit the ASUS ADP65JH-BB 0335A1965 adapter terminals while you charging for your laptop. We ship to the Laptop adapter around Globe [USA, Canada, UK, NZ and Ireland, Australia]. View more laptop adapter. Contact with us if any problem on selecting power adapter.
NL:Lader voor ASUS ADP65JH-BB - Laptop-oplader voor ASUS
JP:ASUS ADP65JH-BB
DE:ADP65JH-BB 0335A1965 NOTEBOOK-Netzteil. Das richtige ASUS Laptop adapter finden. 
NZ:ASUS ADP65JH-BB AC adapter NZ. Replacement for Acer,Apple, Compaq,Dell, FUJITSU, IBM,Lenovo,Sony and so on.
Wholesale and retail laptop adapter in UK. 
Warranty Policy
-We warrant that the ASUS ADP65JH-BB 0335A1965 adapters sold in our website are 100% brand new and free from defects in material and workmanship.
-We never sell used or refurbished adapters.
-100% Q.C. of Our ASUS ADP65JH-BB 0335A1965 adapter.
-Only the highest quality cells are used in our ASUS ADP65JH-BB 0335A1965 adapter.
-Offering one year quality warranty, 30 days money back.
Attention：
1. Please make sure the DC output and tip size of ac adapter are accordant before you bid.
2. If you use the adapter for a long time,please keep it suitable ventilating and humidity.Do not put it on the skin products.
Power supplies are a frequently misunderstood-and overlooked-PC component. Also called a power supply unit or PSU, the component that supplies power to a computer.
These may be you want to look for :
Dell 0T122K Computer Power Supply
dell 9RD1W Computer Power Supply
Dell H525EF-00 Computer Power Supply
HP 503377-001 Computer Power Supply
dell FY632 Computer Power Supply

This 3580mAh 3.8V Rechargeable Li-ion Battery MLP2964137 should bestrongly recommended! Designed to replace your old and aged battery, our li-ion battery ACER MLP2964137 is a useful tool to power your mobile phone as well askeep your communication smooth and uninterrupted. It is featured withhigh-energy density, stable discharge voltage, high-temperatureresistance, long lifespan and environment protection. Besides, it is upto normal battery standard, which together makes it a dependable andsafe product you should own.

ACER MLP2964137 cellphone Battery [3580mAh, 3.8V]

Replacement Battery>> Cheap ACER MLP2964137 battery

Replace the following part numbers:
MLP2964137 3165142P(1ICP/4/65/142)
Fits the Following Models: 
ACER A1402 & Iconia One 7 B1-730 B1-730HD 

Fast Delivery, Secure Shopping Guarantee - Cell Phone Batteries / Computer Power Supply Online Store(UK)

Batterijen Sales Nederland / België ACER MLP2964137 Batterijen >> ACER BATTERIJEN

JP Store: ACER MLP2964137 battery

Laptop AKKU: AKKUS Für ACER, Handy-Akku für ACER MLP2964137.

Features:
All batteries have been tested before shipment
Stay connected with your family and friends by getting this battery
Prevent overcharging and extend battery life
Best replacement battery to offer long-time standby and talk time
3.8V 2100mAh high capacity, extra long stand-by time
With high capacity and low impedance
Our battery is sent out with little or no power, so please charge it for about 7 hours before using
ACER MLP2964137, 
What is the best way to keep your phone charged?
With Li-ion batteries you should try and keep them at 50% or more most of the time. It is not always that easy to do, especially if you are busy and travelling around a lot. Even though it is important to try and keep it above 50% you should not allow it to fully recharge to 100%.
It won’t be the end of the world for your battery if you do but it will shorten its lifespan. Experts say a good range to aim for is keeping it between the 40-80% range. Should I ever fully recharge the battery?
Once a month you should plug it in and let it hit that 100% mark. This will recalibrate the battery and also applies to laptops.
Is it safe to charge you phone during the night?
With everyone so addicted to the little screen in your pocket the only time many of us can charge it is when we are asleep.
Most smart phones live up to their name and will stop charging when they are full.

Find the latest tablet pc batteries for sale. Our online battery store with the widest selection of li-ion battery, tablet pc battery, laptop battery, smart phone battery and so on.

Hilti 2116092 battery pack for Hilti 2116092 B18/5.2

Motorola EQ40 battery pack for MOTOROLA Droid Turbo XT1254 Verizon with Tools

Samsung EB-BN920ABE battery pack for Samsung Galaxy Note 5 Internal

JVC BN-VG107 battery pack for JVC Everio GZ-HD Series

Motorola EB20 battery pack for Motorola Droid Razr XT910 XT912 + Tools

Cheap Blackberry BAT-60122-003 Battery - Spare battery genuine Blackberry battery, great for users who use their phone extensively whilst out and about.This Blackberry BAT-60122-003 Battery is an authentic Blackberry product. Use it as a replacement or spare battery for your Blackberry Priv STV100-2. Installation is simple and easy!

BLACKBERRY BAT-60122-003 cellphone Battery [3360mah/12.87wh, 3.83V]

Replacement Battery>> Cheap Blackberry BAT-60122-003 battery

Replace the following part numbers:
BAT-60122-003 HUSV1
Fits the Following Models: 
Blackberry Priv STV100-2 BAT-60122-003

Fast Delivery, Secure Shopping Guarantee - Cell Phone Batteries / Computer Power Supply Online Store(UK)

Batterijen Sales Nederland / België Blackberry BAT-60122-003 Batterijen >> BLACKBERRY BATTERIJEN

JP Store: Blackberry BAT-60122-003 battery

Laptop AKKU: AKKUS Für BLACKBERRY, Handy-Akku für Blackberry BAT-60122-003.

Features:
All batteries have been tested before shipment
Stay connected with your family and friends by getting this battery
Prevent overcharging and extend battery life
Best replacement battery to offer long-time standby and talk time
3.8V 2100mAh high capacity, extra long stand-by time
With high capacity and low impedance
Our battery is sent out with little or no power, so please charge it for about 7 hours before using
BLACKBERRY BAT-60122-003, 
What is the best way to keep your phone charged?
With Li-ion batteries you should try and keep them at 50% or more most of the time. It is not always that easy to do, especially if you are busy and travelling around a lot. Even though it is important to try and keep it above 50% you should not allow it to fully recharge to 100%.
It won’t be the end of the world for your battery if you do but it will shorten its lifespan. Experts say a good range to aim for is keeping it between the 40-80% range. Should I ever fully recharge the battery?
Once a month you should plug it in and let it hit that 100% mark. This will recalibrate the battery and also applies to laptops.
Is it safe to charge you phone during the night?
With everyone so addicted to the little screen in your pocket the only time many of us can charge it is when we are asleep.
Most smart phones live up to their name and will stop charging when they are full.

Find the latest tablet pc batteries for sale. Our online battery store with the widest selection of li-ion battery, tablet pc battery, laptop battery, smart phone battery and so on.

Amazon 26S1004-A battery pack for AMAZON KINDLE 58-000065

ASUS C12P1305 battery pack for ASUS Transformer Pad TF701T K00C Tablet

MEDION A32-C17 battery pack for MEDION Akoya P7628 A32-C17 E7223 P7631

HP 722237-2C1 battery pack for HP ENVY Rove AIO 20-K014US 50WH

HP PS03XL battery pack for HP Stream x360 11-P 11-P010NR

Extended warranties extend the coverage against defects and problems that a computer may experience for a longer period of time. An accidental damage warranty can cover a computer repair in situations that the standard warranty may not, such as water damage or dropping a laptop on a floor. On the surface, these warranties could save you a lot of money if you need a repair, but are they worth it? Let us look at a few of the factors to consider.

Reliability

Computers tend to be more reliable today than they were even a few years ago. As manufacturing processes improve, the chance of a major failure is less likely.

Cost

When considering whether to purchase an extended warranty or accidental coverage, weigh the cost of the warranty with the likely cost of a major repair and/or the parts needed for that repair. Then consider the likelihood of the repair being necessary. Also consider the replacement cost for a new laptop. Laptops have become increasingly less expensive, often making it cheaper to purchase a new laptop with a new warranty than to pay for a costly repair.

Insurance Coverage

In some cases, home insurance may cover the cost of some computer problems, particularly those caused by lightning damage or other factors associated with your home. Check your policy to see what may already be covered.

Saving Alternatives

You may want to consider skipping an extended warranty, but to put the same amount of money in a savings account. If a repair becomes necessary, the money in the account may be enough to cover it. If a repair is never required, you can use the money to purchase your next computer, or keep it in the savings account for future repairs.

There is no quick and easy answer as to whether or not an extended warranty will be worth the money in every situation. There are many users who have saved a lot of money by utilizing an extended warranty, but also many who paid for one and never used it. Considering the factors listed above can help you to make an informed decision based on your own personal needs.

Cheap MobiWire 178088746 batteries,battery for MobiWire 178088746,brand new, 1 year warranty! Ship to most countries.

MOBIWIRE 178088746 Replacement Battery [1400mAh/5.18Wh, 3.7V]

Replacement Battery>> MobiWire 178088746 battery UK

Replace the following part numbers:
178088746 
Fits the Following Models: 
MobiWire 3.7V 1400MAh 5.18Wh Phone panels

Fast Delivery, Secure Shopping Guarantee - Cell Phone Batteries / Computer Power Supply Online Store(UK)

Batterijen Sales Nederland / België MobiWire 178088746 Batterijen >> MOBIWIRE BATTERIJEN

JP Store: MobiWire 178088746 battery

Laptop AKKU: AKKUS Für MOBIWIRE, Hochwertige AKKUS für MobiWire 178088746.

Tips to extend your MOBIWIRE 178088746 battery life

Buy cheap batteries? Our company has a wide range of batteries, such as ACER, ASUS, AMAZON, CLEVO, DELL, HP, HTC,LENOVO and so on!

The MobiWire 178088746 battery packs isn't charging. What's the deal?

New MobiWire 178088746 battery packs is shipped in a discharged condition and must charged before use. We generally recommend an overnight charge (approximately twelve hours). Refer to the user's manual for charging instructions. Rechargeable MobiWire batteries should be cycled - fully charged and then fully discharged - two to four times initially to allow them to reach their full capacity. (Note: it is normal for a MobiWire 178088746 battery packs to become warm to the touch during charging and discharging).

New MobiWire batteries are hard for the device to charge; they have never been fully charged and are therefore "unformed". Sometimes the device's charger will stop charging a new MobiWire 178088746 battery packs before it is fully charged. If this happens, remove the battery from the device and then reinsert it. The charge cycle should begin again. This may happen several times during the first battery charge. Don't worry; it's perfectly normal.

uk-online.co.uk warranty policy

1. Our MobiWire 178088746 battery packs are guaranteed to be 100% brand new.
2. We use only high quality parts that are equal to or better than the original.
3. Our prices are always lower than the brand names.
4. Repair or replace during the first 90 days.
5. Brand New.
6. 30 Days Money Back.

Find the latest tablet pc batteries for sale. Our online battery store with the widest selection of li-ion battery, tablet pc battery, laptop battery, smart phone battery and so on.

IBM 74Y9340 battery pack for IBM 2B4C 74Y9340 74Y6870 P720 P740 RAIDCARD Cache

LXE 163467-0001 battery pack for LXE MX7 Barcode Scanner

APPLE A1496 battery pack for Apple MacBook Air 13 A1466(Mid 2013 / Early 2014)

ACER AP13J4K battery pack for Acer Chromebook C720 C720P C740

Getac BP2S2P2100S battery pack for Getac T800 series

Can i use a different type of battery?

iCad, NiMH and Li-Ion are all fundamentally different from one another and cannot be substituted unless the device has been pre-configured from the factory to accept more than one type of rechargeable battery technology. The difference between them stems from the fact that each type requires a different charging pattern to be properly recharged. Therefore, the portable device's internal charger must be properly configured to handle a given type of rechargeable battery pack. Refer to the owners manual to find out which rechargeable battery types the particular device supports or use our search to find the device in our database. It will automatically list all of the battery types supported by the machine.

ADP-65AW_A Laptop AC Adapter is replacement for ASUS Transformer Book TX300CA Convertible. The ASUS ADP-65AW_A adapter equivalent is guaranteed to meet or exceed ASUS original specifications. All ASUS ADP-65AW_A Adapters are brand new,1 year Warranty, 100% Guarantee Quality and Fully Test! 

ASUS ADP-65AW_A AC Power Adapter Charger

http://www.uk-online.co.uk/adapter-for-asus-transformer-book-tx300ca-convertible-for-sale-178299.html, 

AC Input:100-240V 50-60Hz
DC Output: 19V 3.42A 65W 
Adapter Fit Models: Adapter for ASUS Transformer Book TX300CA Convertible
Adapter Part Numbers:
Connecter size: 5PIN 

ADP-65AW A
ASUS ADP-65AW_A Adapter Supply Cord/Charger Tips: 1.Please make sure you have order a correct connector. 2.Plase make sure the DC OUTPUT of ASUS ADP-65AW_A adapters & Connector size are accordant before order. 3.Do not try to modify or disassemble the ASUS ADP-65AW_A4.Do not place ASUS ADP-65AW_A adapter in device for a long period of time if device is not being used. 5.Do not short circuit the ASUS ADP-65AW_A adapter terminals while you charging for your laptop. We ship to the Laptop adapter around Globe [USA, Canada, UK, NZ and Ireland, Australia]. View more laptop adapter. Contact with us if any problem on selecting power adapter.
NL:Lader voor ASUS ADP-65AW_A - Laptop-oplader voor ASUS
JP:ASUS ADP-65AW_A
DE:ADP-65AW_A NOTEBOOK-Netzteil. Das richtige ASUS Laptop adapter finden. 
NZ:ASUS ADP-65AW_A AC adapter NZ. Replacement for Acer,Apple, Compaq,Dell, FUJITSU, IBM,Lenovo,Sony and so on.
Wholesale and retail laptop adapter in UK. 
Warranty Policy
-We warrant that the ASUS ADP-65AW_A adapters sold in our website are 100% brand new and free from defects in material and workmanship.
-We never sell used or refurbished adapters.
-100% Q.C. of Our ASUS ADP-65AW_A adapter.
-Only the highest quality cells are used in our ASUS ADP-65AW_A adapter.
-Offering one year quality warranty, 30 days money back.
Attention：
1. Please make sure the DC output and tip size of ac adapter are accordant before you bid.
2. If you use the adapter for a long time,please keep it suitable ventilating and humidity.Do not put it on the skin products.
Power supplies are a frequently misunderstood-and overlooked-PC component. Also called a power supply unit or PSU, the component that supplies power to a computer.
These may be you want to look for :
dell 6RG54 Computer Power Supply
Dell H525EF-00 Computer Power Supply
Acbel 250W Computer Power Supply
HP ATX0300D5WC Computer Power Supply
HP 320w Computer Power Supply