6 Pack Rechargeable 14250 Battery with Charger, Fitinoch 3.7V 1/2 AA Lithium Batteries Can Replace Disposable Battery 3.6 Volt LS 14250, ER14250, CR14250 for Laser

I have a significant alarm system for my house and they go in the window and door sensors. The original 14250 (3.6v) batteries would go out every few years and I purchased these rechargeable ones. I took the battery clip in the device off, expanded with tweezers and these fit and work perfectly although they are a mm or less taller. They charged in an hour or less and I’ll chime in later for how long they last. Btw, I purchased 5 regular ones and they died in a year.

Great product as described

I am always nervous when I purchase rechargeable batteries. There are many things that can go wrong resulting in damage to people of products. When I popped these in the charger, they charged right up. I haven't used them often as I purchased them for items I use very sporadically so I can't attest to their longevity. That's the ONLY reason I'm giving this four stars instead of five. I don't like when people post a five star review for a product they haven't yet used it its entirety. Those aren’t helpful in my opinion.

Great

The batteries came fully charged however the charger wouldn't return to closed position like the left side does charged a battery but seemed like something inside was wrong

Batteries hold 6 hours...charge fast...1 hour

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Worked well on door sensors