The Philips 9V Longlife 6F22L1B battery is a long-lasting, non-rechargeable battery that is ideal for devices with low energy consumption. This battery uses zinc-carbon technology, which provides a reliable and affordable source of energy for applications where long operating time is important. This battery provides reliable energy for everyday use and is a practical choice for single use. Choose the Philips Longlife 6F22L1B if you are looking for an economical battery with solid performance.