I bought this battery for the remote control of my subwoofer, as you can not buy such a large batteries in the supermarket. I was promised a delivery within 2 days, the battery, however, came only after more than a week. Since I can not turn the subwoofer without the remote control, which was very annoying. Now, after only a few weeks of operation, the battery is already empty. As the remote control can not consume as much electricity, I'm assuming that was completely overlaid this battery.