12 V Lead‑Acid (AGM/SLA) Solar Charger

Single-Cell Li‑ion Solar Charger + 5 V Output (Power Bank Style)

Simple 5 V USB Solar Charger (No Battery)

Simple Solar charger circuit project using transistors

Automatic 9-volt Battery Charger

Bicycle USB Charger Circuit Diagram

Battery-Discharge Measurement Circuit Diagram

Monitor for 6V/12V Batteries

Nicad Battery Tester Circuit Diagram

Ni-cad battery zapper Circuit Diagram

Simple Battery operated emergency light Circuit Diagram

Simple 12 Vdc Battery Operated 120 Vac Power source Circuit Diagram

Simple Capacitance operated battery powered light Circuit Diagram

Battery Isolator

Making a Solar Energy Powered an iPhone Battery Charger

Dimmable Low Battery Indicator Circuit Diagram

5v Powered Charge Pump Battery Charger

Simple Lead Acid Battery Charger #2

9V Automatic Battery NiCd Charger

Motobike Battery Monitor