Chances are that since it’s just after the holidays, you’ve got some nifty new gadgets that need power. If buying batteries is breaking the bank, we’re here to help. Here are three of the best battery-related hacks culled from the internets.

1. Upping Your Battery’s Life Expectancy at HackCollege: Rechargeable batteries do eventually die — permanently. Whether it’s a cell phone, digital camera or laptop, if you plan on regularly depending on the battery for more than a year, you better be cautious. Rechargeable batteries will eventually hit the point of no return, which means as much as a $200 replacement for laptops.

2. The $40 hidden inside a 12V battery at Wise Bread: Kipkay over at Metacafe has done it again, with a life hack and battery hack that will save you roughly $40 on those 1.5V button cell batteries. All you need is a 2-pack of 12V A23 batteries, which retail at less than $2 a pack. I found my set on Amazon for $1.66.

3. The famous Pandora’s Battery at N00bz!: We told you that we’d be releasing an unbricker for the M33 bricks. But then we got to thinking, maybe that just wouldn’t be exciting enough. Would you like a super special surprise bonus? How about an unbricker for ALL PSPs? Yep, you read that right. We call it “Pandora’s Battery”.

Batteries are a must, especially for an electronic gadget like a laptop. So when you find your laptop’s battery not performing well, you’d be very concerned. Don’t worry though, because fixing these is easy, as long as you know how. Here’s how to fix laptop power input.