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

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

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Worked well on door sensors

Gracias son las que ocupo

I like the idea of rechargeable 1/2AA batteries, but this China-made set is not the right size. They are about 1/8 of an inch taller than the standard 1/2AA battery that I'm replacing in a temperature probe. It's enough to make removing the battery quite difficult. Also, I could not get either battery in the set of 2 to fully charge. The charging station has a light that turns from amber to green when batteries are fully charged, and the indicator did turn green. But when I put the *fully charged* battery in my temp probe, the probe's app indicated a charge of only 2.08 volts instead of a full 3.7 volts. Sending them back.