2 x AA Battery Holder with On/Off Switch JST PH Connector

This battery holder is a great choice for powering various projects. It connects two AA batteries in series. The slim box design makes it convenient, and with two AA batteries, it provides about 3V, perfect for many low - voltage electronics projects. It also features a handy on - off switch. It fits all standard AA batteries. When using rechargeable NiMH batteries, the output voltage ranges from about 2.7V when fully charged to 1.8V at the end of their life, with a nominal voltage of 2.4V. For alkaline batteries, the output ranges from 3.2V with new ones to 2.2V at the end of life, and the nominal voltage is around 3V. The polarity matches our 2 - pin JST cable and Li - Ion/Poly batteries. It uses a genuine JST connector, preventing it from getting caught or torn in JST connectors. This is an excellent upgrade for the battery packs that come with micro:bit devices. The built - in on - off switch means you don't have to remove the batteries to turn off the power, and AA batteries last 3 to 5 times longer than AAA ones.

Using this battery holder is easy. First, open the holder and insert two standard AA batteries. Make sure to follow the correct polarity as indicated inside the holder. Then, close the holder. You can use the on - off switch to turn the power on and off for your project. When it comes to choosing batteries, you can use either rechargeable NiMH or alkaline batteries. Just remember that the output voltage will vary depending on the type and the state of charge. For maintenance, keep the battery holder clean and dry. Avoid exposing it to extreme temperatures or moisture. If you're not using it for a long time, remove the batteries to prevent any potential leakage. And that's all you need to know to make the most of your battery holder!