Power Bank From Laptop Battery

Introduction: Power Bank From Laptop Battery

Hello everyone

i was walking around while i saw the guy in computer repair shop throwing away laptop batteries in his trash

i asked him

he said he don't need them anymore so i took them home with me and started to think

How to make something useful out of this batteries

actually each battery have about 3 ~ 6 cells 3.7v Li-ion

this is real treasure but no one knows

so in this instructable we should know how to recycle old damaged laptop batteries.

Step 1: The Laptop Battery

Be careful !! li-ion is dangrous don't short cells ot throw them into fire.

when i say damaged laptop battery i don't mean it's exploded or burned

damaged laptop battery is a battery that unable to recharge or laptop can't feel it anymore or even laptop said replace battery

when we see dead laptop battery there's 3 cases

case 1

the battery board is damaged and can't provide power for turn on the laptop

case 2

there is 1 or more cells not working properly so the whole battery is damaged and can't be use to power any laptop

case 3

the connection between cells maybe cut and circuit is not closed any more

So ...

the first thing is tearing down that battery to salvage cells from inside

then measure each cell it should be higher than 3v

try to charge each cell and monitor it until it reach 4.2v with special li-ion charger

then try discharge and see if it can last long time.

in next step we are ready with some cells

if you can't find laptop battery you can always find cells in electronics stores or online

AliExpress https://goo.gl/8XK8ay 5V Lithium Battery Charge Discharge Protection Integration Board Boost Step Power Module Micro USB Port https://goo.gl/vi3Ltw 5V 2.1A 1A Mobile Power Bank Charger Module Double USB Output 3V to 5V Step Up Boost Lithium Battery Charging Board LCD Display https://goo.gl/IuXVuA 5V 1000mA/1200mA Power Bank Battery Boost Charger Board Plate Lithium Battery Charging Step UP Mobile Phone Power Kit

DIY Full Kit Without batteries https://goo.gl/uWyQtD no battery 7x 18650 LED USB Portable Charger Power Bank External Box Kit DIY Battery Charger Box With Dual USB For Mobile Phone https://goo.gl/4rmKbP Universal Safety Portable USB 4 X 18650 Battery Quick Charger DIY Power Bank Box Case Kit For Smart Cellphone all Decive https://goo.gl/vx8NNc Universal DIY Dual USB 5 x 18650 LCD Display Mobile Phone Power Bank Battery Charger Box Case For iPhone For Xiaomi Powerbank

Batteries : https://goo.gl/OuIaF2 6pcs 18650 Battery 3.7V 2200mAh Rechargeable li-ion battery Flat Head for Power Bank Led flashlight Battery 18650 https://goo.gl/nQ7Rkd 4pcs/lot 2016 newest 100% Original 18650 ICR18650-26Fm 2600mAh Li-ion 3.7v Battery 18650 rechargeable Battery.

EBAY: https://goo.gl/wvkHIg 5V Step-Up Module Boost Converter Lithium Battery Charging Protection Charger https://goo.gl/Smms49 5V 2.1A 1A 2A Mobile Power Bank Charger Module LCD Display Charging Board USB https://goo.gl/VZi3dK 5V 1A 1.2A Power Bank Lithium Battery Charger Board Plate Boost Charging Module

DIY Full Kit Without batteries https://goo.gl/PauyI1 Dual USB LED Power Bank 5x18650 Battery Charger DIY Holder Box Case Kit Backup https://goo.gl/E6Sf26 For Cell Phone Dual 2 USB 2A Power Bank Case Kit 5x18650 Battery Charger DIY Box https://goo.gl/8zQrn8 For Cell Phone 4 USB 2A Power Bank Case Kit 6x18650 Battery Charger DIY Box Case

Batteries https://goo.gl/FNcVpi Samsung ICR18650-26F 2600mAh Original Lithium-ion Rechargeable Battery 2Pcs https://goo.gl/ZnYxlB Samsung 2600mah 18650 Li-ion Lithium battery power tool power bank electric bike

Step 2: Making the Power Bank

Follow the instructions in this video to know how to make your own power bank

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    5 years ago

    How many time need to charge batteries..??..24h,i think.... :)


    Reply 5 years ago

    With the right charger that has an adjustable charge rate, you should be able to charge them in 1 hour at 1C. C is a measure of charge rate, depending on the capacity. A 3000mah battery would need 3 amps to charge at 1C. I use an RC charger from hobby king: https://hobbyking.com/en_us/turnigy-accucel-6-80w-...

    Old or over discharged batteries may need to be charge at as low as 0.1C to recover them


    Reply 5 years ago

    with that charger (electronic circuit from a old powerbank) you must need two hours for charge one battery at 1800 mAh........

    connected in parallel,4 battery(new) need 8 hours....old batteries need above...the electronic circuit of powerbank give max 4.1/4.2 volt and 800 mAh around....and is not variable for battery LiPo......