Rechargeable Batteries - at RS Components AdShop over 550,000 Products In Stock for Next Working Day Delivery. Get your Parts Today!30 Day Returns5,000 New Products/MonthLarge Order DiscountsBrands: Schneider, Raspberry Pi, TE Connectivity, 3M, Vishay, Siemens Battery Charger Circuit - Make a 12V Battery Charger at Home Here is the circuit diagram of a simple and straight forward 12 V battery charger circuit with diagram. This circuit can be used to charge all type of 12V rechargeable batteries including car batteries. The circuit is nothing but a 12V DC power supply with an ammeter for monitoring the charging current. The Simplest Rechargeable Battery Circuit (and Save the The Simplest Rechargeable Battery Circuit (and Save the Planet Too)!!!: Hallo to all.. idea came to me when i was ready to replace a battery cell in my alarm clock next to my bed. Even i am using the last 5 years only rechargeable batteries of the most types i Make an Inexpensive Lithium-Ion Battery Pack : 10 Steps Make an Inexpensive Lithium-Ion Battery Pack: I started this project out of a desire to keep my phone working on long bike tours. I needed a lightweight, inexpensive battery to put on my touring bike. Unfortunately, the lithium battery I needed costs 200 dollars new. Add a charger and powersu..