2Pcs18650 Battery Storage Case 2 Slots x 3.7V for 2x18650 Batteries Holder Box Container with ON/Off Leads and Switch

My AA batteries leaked on an electric safe. I got this and lithium rechargeable batteries, more power longer life and no leaking.

Have held up pretty well so far

Two batteries and this box instead of a $50 replacement battery. Wires are a bit thin but can be replaced if I need to. The on-off switch is why I chose this unit over others. I am not sure why there seems to be so much consternation over the wiring. It states plainly that this is wired in series. 3.7 V + 3.7 V = 7.4 Volts.

Looks good but bad wires used inside. This pack is only useful if you want to draw less than 250 milliamps because the wires are too small to handle more current than that. The switch is also too small to handle enough current. It won't even power a string of LED lights or a microprocessor board because the wire resistance is too high due to the thin wires and poor quality switch. Because of the tiny wires the voltage drop is excessive. The wires are also low quality - flexing them changes their resistance indicating that they are likely to fail quickly.

seems to work well with the 18650 batteries

n/a

I ordered the battery storage compartments and used one to install two 18650 lithium batteries to a LED Motion Sensor Detector Street Light for my yard. The original battery pack was poorly designed and had bad connections.

The description is misleading. An 18650 battery is larger than a normal AA battery. Some people may know this; I didn't. The item caption refers to 18650 batteries, but the entire text discusses "AA" batteries. The seller should correct this. The product seems to be well made, and it arrived exactly on time and as promised, but I bought it for AA batteries, like the text says numerous times.