4 Pieces 6F22 6LR61 Bulk 9V Heavy Duty Long Duration Carbon Zinc New Battery

The customer experience surrounding the 4 Pieces 6F22 6LR61 Bulk 9V Heavy Duty Long Duration Carbon Zinc Batteries is mixed, showcasing a range of functionality and reliability based on individual usage scenarios. Many users appreciate the affordability and practicality of the batteries, particularly for specific applications like powering old tube radios or water detection systems. One customer highlighted their effectiveness in building a B-battery for a vintage radio setup, noting that with a 16mA current draw, these batteries were a cost-effective solution that promised a decent runtime of about 10 hours. This sentiment is echoed by users who value their extended duration and budget-friendly price, making them an attractive option for intermittent use. However, there are notable drawbacks that have made a significant impact on customer satisfaction. Some users reported issues with battery longevity, with one customer mentioning that batteries purchased in March 2020 were dead by November of the same year. Additionally, a rather alarming incident involving a smoke detector highlighted safety concerns, as the batteries caused the alarm to go off continuously. Such experiences raised doubts about the overall reliability and safety of the product for critical applications. On balance, while these batteries may serve well for casual use and specific projects, potential buyers should weigh the risks associated with reliability and safety, particularly for devices that are essential for home safety. **