Hey there! If your Zebra QLn420 barcode printer is losing its juice, this replacement battery is exactly what you need. It's a perfect match for the OEM battery number P1050667-016, so you know it'll fit and work just like the original. With a solid 5000mAh capacity and 7.4 volts of power, this Li-ion battery will keep your printer running through those long shifts without constantly needing a recharge. The cells are made in Japan, which means you're getting quality components that are built to last. Whether you're in retail, warehouse, or any environment where your Zebra printer is essential, this battery ensures you won't have downtime when you need to print labels or barcodes most. Installation is straightforward - just swap out your old battery and you're back in business. No more worrying about your printer dying in the middle of an important print job. This is definitely one of those 'why didn't I replace this sooner' kind of products that makes your work life so much easier!