Dual Output Micro USB 3.3V 5V 16340 Power Bank Battery Charging Module Rechargeable Battery Holder Lithium Battery Charger Board|Integrated Circuits| - AliExpress
Samsung Digimax 530 Battery and Charger - Replacement for Samsung CR-V3 Digital Camera Batteries and Chargers (1300mAh, 3.3V, Lithium-Ion) - Walmart.com
Amazon.com: Dual Output 16340 Micro USB Power Bank Battery Charger Module 3.3V 5V Rechargeable Battery Holder Lithium Battery Charging Board : Cell Phones & Accessories
It Just Got Easier to Convert Lithium-Ion Battery Voltage to 3.3V with this Efficient Single Inductor Synchronous Buck-Boost Regulator | Analog Devices
China 12.6V 3.3A Smart Li-ion Battery Charger - China Charger and Battery Charger price
Dynamic charge-discharge of a 2.3Ah, 3.3V Li-Ion battery | Download Scientific Diagram
3PCS 10 300MA 3V 3.6V Coin Cell Rechargeable lithium battery Charge management module 3.3V 4.2V Charger NI MH Ni CD Li ion LiFe|Integrated Circuits| - AliExpress
LiPo USB Charger Hookup Guide - learn.sparkfun.com
Kodak CRV3 Battery - Replacement for Kodak CR-V3 Digital Camera Battery (1300mAh, 3.3V, Lithium-Ion) - Walmart.com
Charge voltage experiments with lithium ion batteries showing how capacity varies with charge voltage and higher cycle live with lower charge voltage
3.3V Supply using lipo - Electrical Engineering Stack Exchange
3.3V Power Failover Supply with USB Li-Ion Charger - Electrical Engineering Stack Exchange
DC to DC Converter 3.7V 5V to 3.3V Step Down Module 18650 Li-ion Battery for MCU Development Board Power Supply - Walmart.com