This battery holder offers space for 3x AAA batteries in series, perfect for powering different projects. This particular holder has an on/off switch and is suitable for 3.3V projects which require a 2-pin JST-PH 2.0 connector for e.g. Li-Ion/Poly batteries.
Note:
When using rechargeable NiMH batteries, the output voltage will range from about 3.75V when fully charged to 2.7V when almost empty with a nominal voltage of 3.6V.
When using alkaline batteries, the output voltages will range from 4.5V with new batteries to 3.3V at the end of their life with a nominal voltage of about 4.5V.
Do not use this battery holder with boards with Lithium/LiPo charging capabilities!