I wouldn’t put those in a fire alarm. Fire alarms are really low-power, long term devices. Perfect for non-rechargable batteries. A lot of rechargeable batteries have some self-draw, meaning, if you leave them out on a shelf for a year, they’ll be noticeably emptier.
Yeah, definitely not something for a fire alarm lol, when I said random tools I was actually thinking about my tone test tool. No clue why it uses a 9v but that and my favorite multimeter both need them.
I wouldn’t put those in a fire alarm. Fire alarms are really low-power, long term devices. Perfect for non-rechargable batteries. A lot of rechargeable batteries have some self-draw, meaning, if you leave them out on a shelf for a year, they’ll be noticeably emptier.
Yeah, definitely not something for a fire alarm lol, when I said random tools I was actually thinking about my tone test tool. No clue why it uses a 9v but that and my favorite multimeter both need them.