Amazon.com : 2 Pack - Replacement for Pentaxist D Battery - Compatible with Pentax CR-V3 Digital Camera Battery (1300mAh 3.3V Lithium-Ion) : Electronics
Pololu 3.3V Step-Up/Step-Down Voltage Regulator S7V8F3
750mAh 3.7V LiPo Battery Pack — ameriDroid
Amazon.com: ALAMSCN 3.3V 5V MB102 Solderless Breadboard Power Supply Module with 9V Battery Clip Power Cable 2.1x 5.5mm Male DC Jack Plug for Arduino (Pack of 3) : Electronics
Ultralife UB1426 1/2 AA Battery | Battery Junction
Lithium Werks ANR26650M1-B, 3.3 Volt, 2.5Ah NanoPhosphate® Lithium Ion Cell
LiFe 3.3V Battery 2pcs 26650 3300mAH to Tria TRH25 laser SunKing Pro solar light | eBay
LithiumWerks ANR26650M1-B, 3.3 Volt, 2.5Ah, Lithium Iron Phosphate (LiFePO4) Battery
Variable Voltage Battery 3.3v - 4.8v w/ Charger — Extracts Academy
Vape Gear Twist Cube 3.3V - 4.8V Adjustable Battery With Preheat Mode & USB Adapter - Display of 12 | Pen Style Batteries | Midwest Distribution