Adafruit Industries Adafruit Industries CR2032 Sewable Battery Holder
This battery holder is by far the easiest way to add a battery to a small wearable project. By coincidence, there are two small 1mm diameter holes in the metal connection tabs, just large enough for a #5 or smaller needle to pass through. One tab connects to common ground (negative) and the other tab is +3 Volts.
Adafruit Industries CR2032 Sewable Battery Holder
Usually ships in 5-7 business days. Limited availability. May not be in stock at time of order. No back orders.