Cut down on external devices, such as USB devices, like a mouse. Also WiFi will drain your battery so turn it off when you aren't using it to save power. Different cells, different production batches, there are some differences about battery capacity. All kind prevail! Please ensure the product(s) that you are going to buy fits the brand, model and part number of your device. HP TPN-C135, TPN-C136, TPN-I130, TPN-I131, TPN-I132, TPN-I133, TPN-I134, TPN-Q207, TPN-Q208, TPN-Q209, TPN-Q210 Laptop PC Defrag your computer regularly. This will allow your hard drive to not work as hard which won't drain your battery more.

HP HT03XL, L11119-855, HT03041XL-PL, HT03045XL-PL, L56424-005, L11421-542, L11421-545, HSTNN-UB7J, L11421-421, HSTNN-LB8L, L11421-422, HSTNN-LB8M, L11421-2D2, L11421-2C2, HSTNN-DB8R, L11421-1C1, HSTNN-IB8O, HSTNN-IB80, HSTNN-DB8S, HSTNN-DB9D, L11421-2C1, L11421-2D1, L11421-2C3, L11421-271Our HP L11119-855 battery replacement has a built-in high-quality smart circuit board with 12 protection functions such as short-circuit protection and overvoltage protection, which can safely provide power to your laptop. HP L11119-855 battery Warranty Try to keep the amount of programs to a minimum. Every program open helps drain the battery a little bit more.