So in this video I'm gonna show you how to make an easy 10,000 mAh USB power bank using your actual laptop battery itself and a cheap card charger from eBay. The first thing you need is a charger at laptop battery. I prefer those who have 9 pins as others might require sorting specific pins in order to work. If this is your case you need to find out that by yourself. Like this calculation if you wanna find the actual capacity of the power bank. Battery volts multiplied by amperes makes us power and watts. Evided by the 5 volts output of the charger, this makes us the actual power bank's capacity in milliamps. In this point you're gonna need to get a very cheap 1 dollar USB card charger from eBay. Like this one I have here which is rated to 1 amp. As I figured it out it's very nice and it charges my Samsung Galaxy Tab 4 surprisingly fast. Next you need to find 2 5 inch long red and black wires, straight exactly like those I have here. Now I'm gonna show you how to place them on the battery and on the charger. Place and twist securely the negative wire to the metal part on the side. For the positive wire press the spring cap on the front and try to push the wire around it. This looks to be alright. Strap the charger to the battery using a velcro strip or something for easy removal when you wanna charge it either on the laptop itself or to an external battery charger. Your battery must have a polarity in case you place the red to the positive and black to the negative and it's now war. You can use it to charge almost anything. It charges a smartphone, it charges a Samsung tablet, even my iPad and all that without having spent more than 1 dollar on eBay. Now you're ready to enjoy the new weapon of greedless power in your pocket. Thanks for watching, don't forget to comment, rate and subscribe.