LiPo Battery upgrade for laser level

thingiverse

###LiPo Battery Upgrade for Laser Level ####Description Get the most out of your cheap laser level by upgrading to a LiPo battery, just like this one [found here](https://letyshops.com/r/aliexpress-0a1923d7abbf) (referral link). If you've got an old laser level that uses 3xAA batteries and comes with a charger, then you're in luck. ####Why Upgrade? The truth is, AA batteries are not rechargeable. You can't plug in the power adapter while still using alkaline batteries. They will eventually leak, causing damage to your device. And have you seen the prices of LiPo batteries on AliExpress? It's like they're selling used mobile phone batteries at an inflated price. Why pay more when you can do it yourself? ####Part List To get started, you'll need a small LiPo battery that fits within 35x35mm. You can find one [here](https://letyshops.com/r/aliexpress-1587ad0b3a95) (referral link). Make sure to choose one with a capacity between 300 and 600 mAh. Additionally, you'll need two M3 screws that are 3-4mm in length. ####Printing Unfortunately, there's no way to design this case without using supports, so be prepared to print both parts in any orientation with supports. Don't worry, it's worth the effort. ####Assembly Now it's time to assemble your LiPo battery upgrade. Follow these easy steps: 1. Tap two M3 screws into place. 2. Solder the positive and negative wires of the lipo battery to any screw you prefer. Use activated flux (like orthophosphoric acid) to make the soldering process a breeze. 3. Secure the lipo battery with hot glue if needed. 4. Snap in the battery case cap, or simply glue it in place with cyanocrylate glue. 5. Install the battery case with the correct polarity: the lower right screw should be negative. 6. When charging, look for a red light on the charger, which will turn green once complete.