Battery holders come in all sorts of shapes and varieties. These single “AA” battery holders are a bit interesting because they have PC pins (for soldering into circuit boards) rather than the standard wire leads you see on most. The nice thing about these PC Pins is that they happen to work quite well in Solderless Breadboards and Perfboards / Protoboards. No more wire running to your battery case!

The output voltage from this single “AA” battery case would be approximately 1.5VDC. The single holders can be used to build bigger battery banks in parallel or series.