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Inside a Lithium-ion Laptop Battery Pack and Cell

Lithium-ion battery packs come in all shapes and sizes, but they all look about the same on the inside. If you were to take apart a laptop battery pack (something that we DO NOT recommend because of the possibility of shorting out a battery and starting a fire) you would find the following:

 

 

• The lithium-ion cells can be either cylindrical batteries that look almost identical to AA cells, or they can be prismatic, which means they are square or rectangularThe computer, which comprises:
• One or more temperature sensors to monitor the battery temperature
• A voltage converter and regulator circuit to maintain safe levels of voltage and current
• A shielded notebook connector that lets power and information flow in and out of the battery pack
• A voltage tap, which monitors the energy capacity of individual cells in the battery pack
• A battery charge state monitor, which is a small computer that handles the whole charging process to make sure the batteries charge as quickly and fully as possible.

If the battery pack gets too hot during charging or use, the computer will shut down the flow of power to try to cool things down. If you leave your laptop in an extremely hot car and try to use the laptop, this computer may prevent you from powering up until things cool off. If the cells ever become completely discharged, the battery pack will shut down because the cells are ruined. It may also keep track of the number of charge/discharge cycles and send out information so the laptop’s battery meter can tell you how much charge is left in the Toshiba pa3533u-1bas battery.

It’s a pretty sophisticated little computer, and it draws power from the batteries. This power draw is one reason why lithium-ion Toshiba pa3399u-1bas battery lose 5 percent of their power every month when sitting idle.

Lithium-ion Cells

As with most batteries you have an outer case made of metal. The use of metal is particularly important here because the battery is pressurized. This metal case has some kind of pressure-sensitive vent hole. If the battery ever gets so hot that it risks exploding from over-pressure, this vent will release the extra pressure. The Toshiba pa3537u-1bas battery will probably be useless afterwards, so this is something to avoid. The vent is strictly there as a safety measure. So is the Positive Temperature Coefficient (PTC) switch, a device that is supposed to keep the battery from overheating.

 

This metal case holds a long spiral comprising three thin sheets pressed together:

• A Positive electrode
• A Negative electrode
• A separator

Inside the case these sheets are submerged in an organic solvent that acts as the electrolyte. Ether is one common solvent.

The separator is a very thin sheet of microperforated plastic. As the name implies, it separates the positive and negative electrodes while allowing ions to pass through.

The positive electrode is made of Lithium cobalt oxide, or LiCoO2. The negative electrode is made of carbon. When the battery charges, ions of lithium move through the electrolyte from the positive electrode to the negative electrode and attach to the carbon. During discharge, the lithium ions move back to the LiCoO2 from the carbon.

 

 

The movement of these lithium ions happens at a fairly high voltage, so each cell produces 3.7 volts. This is much higher than the 1.5 volts typical of a normal AA alkaline cell that you buy at the supermarket and helps make lithium-ion batteries more compact in small devices like cell phones. See How Batteries Work for details on different battery chemistries.

We’ll look at how to prolong the life of a lithium-ion battery and explore why they can explode next.

About the Author

www.batteries-company.com - Australia leading battery company for Toshiba laptop batteries, HP laptop batteries, Fujitsu laptop batteries, Olympus Camera batteries, Canon camcorder batteries, Makita power tools batteries, Dewalt power tools batteries.

How to assemble a battery pack pt 1

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1.5 Digital Photo Keychain – Black (2 Pack) $10.99 Show off your kids, pets and classic moments with friends and family in style with the Q:Electronics Digital Keychain. The on-board memory holds up to 100 photos. Loading the photos is a matter of connecting the keychain to the computer with the included USB cable and transferring any size JPEG, JPG or BMP to the device. The included software automatically resizes the image for optimal viewing. Includes a Li-ion rechargeable battery. An ?auto-off? function extends battery life. Photos can be viewed in manual and automatic play modes. Buy one for yourself or give it to a friend, and make it a gift they?ll never forget. Compatible with most PC?s, XP and newer plus Mac OS 10.4 and above (requires additional free software download). Not compatible with Snow Leopard.

1/10 Scale Blue Radio RC Remote Control Electric (Esc) Offroad Mad Truck for Truck Collectors $128.99 Full Function 4WD Radio Control Truck Front and Rear Wheel Driven All Setup Alloy Adding Rigidity Differential Gear The Mode of Hydraulic Pressure Aluminum Alloy Shock Absorber Aluminum Alloy Chassis Oversize Off Road Wheels Antiskid and Abrasion Proof Rubber Tire Full Ball Bearings Used Through the Car LCD Screen Controller 550 Class Big Power Motor Speed: Approx. 30 to 40 mph Electron Stepless Speed Controller 7.2V 1800mAh Ni-Cd Battery Pack 4 Wheel Drive Width:10 Height:8 Scale 1:10.

10 Pack of Maxell LR44/357/AG13/A76 Button Coin Cell Battery $17.95 Package includes 10 X Maxell LR44 Batteries. Suitable for electronic calculators, games, clocks, watches, measuring instruments and remote controllers

10 x Battery Pack Cover Shell for Xbox 360 Controller $12.99 compatible with For Xbox 360

1000mAh Battery fits Blackberry Curve 8300, Curve 8310, Curve 8320, Curve 8330 series $11.94 High Quality high capacity light weight rechargeable DC 3.7V Li Ion 1000mAh battery. Longer battery life than the original battery that comes with the cell phone. Best replacement for the original Blackberry Curve 8300 Curve 8310 Curve 8320 Curve 8330 series battery pack. No memory effect. Can be charged or discharged as needed without loss of capacity. Overcharge protection with built in battery life microchip. CE Certified.

1000mAh Battery fits Dell Axim X50 X50v X51 X51v series $13.99 High Quality high capacity light weight rechargeable DC 3.7V Li Ion 1000mAh battery. Longer battery life than the original battery that comes with the PDA. Best replacement for the original&nbsp Dell Axim X50 X50v X51 X51v series battery pack. No memory effect. Can be charged or discharged as needed without loss of capacity. Overcharge protection with built in battery life microchip. CE Certified.

1000mAh Battery fits LG KU990, viewty KU990, CU920, CU920 Vu-TV, CU915, CU915Vu, HB620T, KU990R, KE9 $12.97 High Quality high capacity light weight rechargeable DC 3.7V Li Ion 1000mAh battery. Longer battery life than the original battery that comes with the cell phone. Best replacement for the original LG KU990 viewty KU990 CU920 CU920 Vu TV CU915 CU915Vu HB620T KU990R KE990 KE998 KF690 Viewty Vu series battery pack. No memory effect. Can be charged or discharged&nbsp as needed without loss of capacity. Overcharge protection with built in battery life microchip. CE Certified.

1000mAh Rechargable BackUp Battery Power Pack For Apple iPhone 4 4G 3GS iPod Touch 1st & 2nd & 3rd $4.99 Brand new portable PowerStation for the iPhone 4G & touch, simply charge it up, then when your iPhone or touch’s battery is low, simply plug this into the bottom, it provides a constant, charge to your iPhone or touch! You can either keep it plugged in while using the iPhone or touch, or just let it sit and it will charge up your device full.

1000mAh Rechargable BackUp Battery Power Pack For Apple iPhone 4 4G 3GS iPod Touch 1st & 2nd & 3rd $10.99 Brand new portable PowerStation for the iPhone 4G & touch, simply charge it up, then when your iPhone or touch’s battery is low, simply plug this into the bottom, it provides a constant, charge to your iPhone or touch! You can either keep it plugged in while using the iPhone or touch, or just let it sit and it will charge up your device full.

1000mAh Rechargeable Battery Pack for Nintendo DSi NDSi $4.58 Specially designed for the Nintendo DSi,1000 mAh capacity,extend Nintendo DSi’s using time,Advanced lithium-ion technology keeps your DSi working at optimum performance,With a mini screw driver,Portable size,conveniently to carry and use

1050mAh Battery fits Palm Tungsten E2 series $12.49 High Quality high capacity light weight rechargeable DC 3.7V Lithium Polymer 1050mAh battery. Longer battery life than the original battery that comes with the PDA. Best replacement for the original Palm Tungsten E2 series battery pack. No memory effect. Can be charged or discharged as needed without loss of capacity. Overcharge protection with built in battery life microchip. CE Certified.

10x CR2032 CR 2032 3V Lithium Battery Bulk Lot $4.39 Quantity: 10. Usage: calculators, cameras, watches, games, lighters and other electronic appliances. 5 batteries in a pack. You never quit. Your battery shouldn’t either.

1100mAh Battery fits LG VX9700, VX9700 DARE $5.36 High Quality high capacity light weight rechargeable DC 3.7V Li Ion 1100mAh battery. Longer battery life than the original battery that comes with the cell phone. Best replacement for the original LG VX9700 VX9700 DARE battery pack. No memory effect. Can be charged or discharged as needed without loss of capacity. Overcharge protection with built in battery life microchip. CE Certified.

1100mAh Battery fits Sprint PPC-6900 Touch, Verizon Touch XV6900, Dopod Touch S1, UTStarcom MP6900, $13.98 High Quality high capacity light weight rechargeable DC 3.7V Lithium Ion 1100mAh battery. Longer battery life than the original battery that comes with the PDA. Best replacement for the original Sprint PPC 6900 Touch Verizon Touch XV6900 Dopod Touch S1 UTStarcom MP6900 Vogue HTC Touch P3050 P3450 P3452 HTC Elf Vogue 100 Elfin O2 XDA Nova i mate Touch T Mobile MDA Touch NTT DoCoMo FOMA HT1100 series battery pack. No memory effect. Can be charged or discharged as needed without loss of capacity. Overcharge protection with built in battery life microchip. CE Certified.

1150mAh Battery fits Palm Tungsten TX series $13.98 High Quality high capacity light weight rechargeable DC 3.7V Lithium Polymer 1150mAh battery. Longer battery life than the original battery that comes with the PDA. Best replacement for the original&nbsp Palm Tungsten TX series battery pack. No memory effect. Can be charged or discharged as needed without loss of capacity.Overcharge protection with built in battery life microchip. CE Certified.

1200mAh Battery Replacement For Apple iPhone 3GS With Tool Kit $6.09 100% compatible with your Apple iPhone 3GS. We offer 1 year warranty to this product. High quality, competitive price, li-ion pack and high durability with extra power.

1200mAh Battery fits O2 XDA ii mini, XDA Neo, mini Limited Edition; i-mate Jam, New JAM; Qtek S100; $16.98 High Quality high capacity light weight rechargeable DC 3.7V Li Polymer 1200mAh battery. Longer battery life than the original battery that comes with the PDA. Best replacement for the original O2 XDA ii mini XDA Neo mini Limited Edition i mate Jam Jam back Jamin New JAM Qtek S100 S110 S200 DOPOD 818 828 828 818 Pro 830 Orange SPV M500 M600 HTC Magician Prophet Magician Refresh Charmer T Mobile MDA Compact MDA Compact II Vodafone VPA Compact VPA Compact S ERA MDA Compact MDA Compact II Krome Spy series battery pack. No memory effect. Can be charged or discharged as needed without loss of capacity. Overcharge protection with built in battery life microchip.

1200mAh Battery fits Palm Treo 800w, Palm Centro, Palm Otto series $10.4 High Quality high capacity light weight rechargeable DC 3.7V Li Ion 1200mAh battery. Longer battery life than the original battery that comes with the cell phone. Best replacement for the original Palm Treo 800w Palm Centro Palm Otto series battery pack. No memory effect. Can be charged or discharged as needed without loss of capacity. Overcharge protection with built in battery life microchip. CE Certified.

1200mAh Battery fits Sony Playstation Portable 2nd Gen PSP-2000, Slim, Lite $15.98 High Quality high capacity light weight rechargeable DC 3.7V Li Ion 1200mAh battery. Longer battery life than the original battery that comes with the cell phone. Best replacement for the original Sony Playstation Portable 2nd Gen PSP 2000 Slim Lite battery pack. No memory effect. Can be charged or discharged as needed without loss of capacity. Overcharge protection with built in battery life microchip. CE Certified.

1200mAh NB-4L Replacement Battery for the Canon PowerShot $2.27 Never run out of battery power when you’re just about to capture the perfect moment! Time to get extra power for your digital video camera/camcorder. High capacity, rechargeable DC 3.7V Li-Ion Battery technology gives the best performance possible compared to other battery technologies such as Nickel Metal Hydride (Ni-MH). Net weight: 1.0oz. Best replacement for the original NB-4L 9763A001AA battery pack. Compatible With Canon: Digital IXUS 30 / 40 / 50 / 55 / 60 / 65 / 70 / 75 / 80 IS / i Zoom / i7; IXY Digital 55; PowerShot SD-Series / Digital ELPH SD1000 / SD1100 IS / SD1100IS / SD200 / SD30 / SD300 / SD400 / SD430 / SD450 / SD600 / SD630 / SD750 / SD780 IS / SD940 IS / SD960IS; PowerShot TX-Series TX1/ Canon PowerShot SD1400 IS / Digital IXUS 130 IS / IXY 400F / ELPH 100 HS (IXUS 115 HS) / ELPH 300 HS (IXUS 220 HS) / IXY Digital 80 / L3 / L4.

1200mAh Replacement Li-ion Battery Pack For Apple iPhone 3GS With Tool Kit $6.09 100% compatible with your Apple iPhone 3GS. We offer 1 year warranty to this product. High quality, competitive price, li-ion pack and high durability with extra power.

1200mAh iPhone 3GS Battery Replacement With 7 Pcs Change Tool Kit $6.09 100% compatible with your Apple iPhone 3GS. We offer 1 year warranty to this product. High quality, competitive price, li-ion pack and high durability with extra power.

1200mah eForCity Li-Ion NB-4L / NB4L Battery for Canon PowerShot TX-Series TX1 $1.69 Never run out of battery power when you’re just about to capture the perfect moment! Time to get extra power for your digital video camera/camcorder. High capacity, rechargeable DC 3.7V Li-Ion Battery technology gives the best performance possible compared to other battery technologies such as Nickel Metal Hydride (Ni-MH). Net weight: 1.0oz. Best replacement for the original NB-4L 9763A001AA battery pack. Compatible With Canon: Digital IXUS 30 / 40 / 50 / 55 / 60 / 65 / 70 / 75 / 80 IS / i Zoom / i7; IXY Digital 55; PowerShot SD-Series / Digital ELPH SD1000 / SD1100 IS / SD1100IS / SD200 / SD30 / SD300 / SD400 / SD430 / SD450 / SD600 / SD630 / SD750 / SD780 IS / SD940 IS / SD960IS; PowerShot TX-Series TX1/ Canon PowerShot SD1400 IS / Digital IXUS 130 IS / IXY 400F / ELPH 100 HS (IXUS 115 HS) / ELPH 300 HS (IXUS 220 HS) / IXY Digital 80 / L3 / L4.

123 Lithium 6 Pack – 123 Lithium Batteries $10.12 3 Volts. Lithium Photo Battery- 123. Use for flashlights and digital electronics. Replaces: EL123AP DL123A CR123 CR123A L123LA SF123A. 10 Year Shelf Life. Batteries Included: 6.

1250mAh Battery fits Cingular 8100, i-mate K-Jam, DOPOD 838, Qtek 9100, HTC P3400, Gene 100, Wizard, $5.49 High Quality high capacity light weight&nbsp rechargeable DC 3.7V Li Ion 1250mAh battery. Longer battery life than the original battery that comes with the PDA. Best replacement for the original&nbsp Cingular 8100 8120 8125 8150 i mate K Jam DOPOD 838 Qtek 9100 HTC P3400 P3400i P4300 8100 81525 Gene Gene 100 Wizard Wizard 100 Wizard 110 Wizard 200 O2 XDA Mini s Mini Pro T Mobile MDA Vario MDA US MDA IV 4 Orange SPV M3000 V3000 Vodafone VPA Compact II E Plus Pocket PDA ERA MDA Vario series battery pack. No memory effect. Can be charged or discharged&nbsp as needed without loss of capacity.Overcharge protection with built in battery life microchip. CE Certified.

13.2 AND 2.1 GALLON MOTION SENSOR TRASH CAN COMBO PACK $92 Maintain a clean kitchen and keep your hands free of germs with the 13.2 and 2.1 Gallon Motion Sensor Trash Can Combo Pack. Both of these state of the art stainless steel trash cans use a motion sensor that allows you to get rid of your trash without having to touch the lid. When in range, the lid will automatically open for trash deposits and close just seconds later! A pack of two motion sensor trash cans Finger print resistant stainless steel Battery life approximately six months to one year Non skid base Assembly level/degree of difficulty: Easy. In the event of a return this item is subject to a restocking fee.

1300mAh Battery fits Palm Treo 500 / 500v / 500p / 550 / 550V series $3.58 High Quality high capacity light weight rechargeable DC 3.7V Li Ion 1300mAh battery. Longer battery life than the original battery that comes with the cell phone. Best replacement for the original Palm Treo 500 500v 500p 550 550V series battery pack. No memory effect. Can be charged or discharged as needed without loss of capacity. Overcharge protection with built in battery life microchip. CE Certified.

1300mAh Portable External Power Pack Battery Case for Apple iPhone 4 4G $27.98 Brand New External PowerStation for the iPhone 4,Lithium Polymer Battery,Light Weight,Thin Design,Rubber feel,non-slip comfortable grip.Use the USB Sync cable to charge.Portable backup battery for you to chage your iPhone anytime, anywhere!

1300mAh Portable External Power Pack Battery Case for Apple iPhone 4 4G $21.98 Brand New External PowerStation for the iPhone 4,Lithium Polymer Battery,Light Weight,Thin Design,Rubber feel,non-slip comfortable grip.Use the USB Sync cable to charge.Portable backup battery for you to chage your iPhone anytime, anywhere!

1350mAh Battery fits AT&T 8900, 8925 Tilt, Tilt 8925, HTC TyTN II, P4550, Kaiser $3.49 Detailed Description High Quality, high capacity, light weight rechargeable DC 3.7V Lithium Polymer 1350mAh battery. Latest Lithium Polymer battery technology gives the best performance possible compared to other battery technologies such as Nickel Metal Hydride (Ni-MH). Best replacement for the original AT T 8900, 8925 Tilt, Tilt 8925, HTC TyTN II, P4550, Kaiser, Kaiser100, Kaiser 110, Kaiser 120, T-Mobile MDA Vario III, Vodafone v1615, VPA Compact V series battery pack. No memory effect. Can be charged or discharged as needed without loss of capacity Overcharge protection, with built-in battery life microchip Compatible with: AT T 8900, 8925 Tilt, Tilt 8925, HTC TyTN II, P4550, Kaiser, Kaiser100, Kaiser 110, Kaiser 120, T-Mobile MDA Vario III, Vodafone v1615, VPA Compact V series. CE Certified 6 Months Manufacturer warranty

14.4V Cordless Impact Wrench $0.01 DWT2782: Features: -Frameless motor for extended tool durability and life .-Compact size and weight allow access into tighter areas and reduces user fatigue .-Performs a wide range of fastening applications .-Replaceable brushes for increased serviceability .-Textured ant-slip comfort grip provides maximum comfort .-Durable magnesium gear case and all metal transmission for extended durability .-Heavy-duty impacting mechanism directs torque to fastener without kickback .-Includes 14.4 Volt OPR Battery Pack (2611-1575), 7.2 Volts to 18 Volts Dual Port 1 Hour Charger (2611-1559), 7.2 Volts to 18 Volts 1 Hour Vehicle Charger (2611-2631), 7.2 Volts to 18 Volts 15 Minute Charger (2611-1641), 7.2 Volts to 18 Volts 1 .-Hour Charger with Automatic Tune-Up Mode (2611-1633), and Quick Connect 3/8 Impact Chuck .-0 to 2,400 rpm no load speed .

1400mAh Battery fits Apple iPhone 4Gb 8Gb 16Gb series $15.98 High Quality high capacity light weight rechargeable DC Lithium Polymer 1400mAh battery. Longer battery life than the original battery that comes with the PDA. Best replacement for the original Apple iPhone 4Gb 8Gb 16Gb series battery pack. No memory effect. Can be charged or discharged as needed without loss of capacity.Overcharge protection with built in battery life microchip. CE Certified.

1400mAh Battery fits BlackBerry 8800, 8830, 8800c, 8800r series $12.48 High Quality high capacity light weight rechargeable DC 3.7V Li Ion 1400mAh battery. Longer battery life than the original battery that comes with the cell phone. Best replacement for the original Blackberry 8800 8830 8800c 8800r series battery pack. No memory effect. Can be charged or discharged as needed without loss of capacity. Overcharge protection with built in battery life microchip. CE Certified.

1400mAh Battery fits Palm Treo 755 / 755p series $18.98 High Quality high capacity light weight rechargeable DC 3.7V Li Ion 1400mAh battery. Longer battery life than the original battery that comes with the cell phone. Best replacement for the original Palm Treo 755 755p series battery pack. No memory effect. Can be charged or discharged as needed without loss of capacity. Overcharge protection with built in battery life microchip. CE Certified.

1400mAh Replacement Battery for Palm Tungsten E2 series $16.49 High Quality, high capacity, light weight rechargeable DC 3.7V Lithium Polymer 1400mAh battery.Best replacement for the original Palm Tungsten E2 series battery pack.

1420mAh Battery Replacement For Apple iPhone 4 4G 16GB 32GB With 8 pcs Tool Kits $7.09 100% compatible with your Apple iPhone 4 4G. We offer 1 year warranty to this product. High quality, competitive price, li-ion pack and high durability with extra power.

1420mAh Power Battery Replacement For Apple iPhone 4 4G 16GB 32GB With 8 Pcs Change Tool Kits $7.09 100% compatible with your Apple iPhone 4 4G. We offer 1 year warranty to this product. High quality, competitive price, li-ion pack and high durability with extra power.

1420mAh Replacement Battery For Apple iPhone 4 4G 16GB 32GB $7.09 100% compatible with your Apple iPhone 4 4G. We offer 1 year warranty to this product. High quality, competitive price, li-ion pack and high durability with extra power.

1420mAh Replacement Li-ion Battery Pack For Apple iPhone 4 4G 16GB 32GB With Tool Kits $7.09 100% compatible with your Apple iPhone 4 4G. We offer 1 year warranty to this product. High quality, competitive price, li-ion pack and high durability with extra power.

1420mAh iPhone 4 4G 16GB 32GB Battery Replacement With 8 Pcs Change Tool Kits $14.09 100% compatible with your Apple iPhone 4 4G. We offer 1 year warranty to this product. High quality, competitive price, li-ion pack and high durability with extra power.

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