3.7V 2600mAh Rechargeable Batteries Lithium ion Battery with PH2.0/2P Connector for DIY Electronics Products, Toys, Lighting, Bluetooth Equipment

I replaced my Hosmart wireless alarm sensor battery with this one. Unfortunately the plug didn't fit, so I connected the wires to the original plug. My alarm immediately began going off when I plugged it in. Hope it lasts a while.

If you have a snap on flip up light this is the battery for it. My dealer told me the light isn’t under warranty and to get it replaced would be 90 dollars. He wrote the part number down so he wouldn’t forget to call on it again. I googled the part number found this and it works great. Exact size and plug.

It wasn't fully charged when I received it and it initially wouldn't take a charge. I let it run down to fully discharged, then it finally charged up, but didn't hold the charge. I charged it again and now it seems to be working okay. Time will tell.

I bought this for a speaker that I have. It's old battery wouldn't keep charge no more.This battery that I bought does not even charge. It's completely dead. Had it plugged in for hours and still didn't charge.Will be sending this one back

These were the perfect replacement and have lasted longer than the original batteries. Would recommend for replacement of any outdoor lights.

Perfect replacement for the one in my mouth irrigation device.

The media could not be loaded. Got this as a backup battery for my grandson’s remote control car. It has the same voltage, connector, and shaped the same but it was just a bit too long to fit inside the compartment. Make sure you measure before purchasing just to be safe.

I have just installed this in my Cygolite 400 bike light. I had to clip the connector off, and solder solder the old one on. Getting the whole ball of wax back in the tube was challenging. So be careful pulling the old one apart. Do a video. I have done several of these battery changes with Cygolites.