This charger circuit will step up the voltage from 1.5V to 5V DC to reach the cell phone charging requirement. The circuit uses only an AA or AAA 1.5v battery (1V to 2.4V). The charger is composed of ...

Ralph’s simple battery charger is essentially this simple voltage regulator circuit. He chose the voltage-setting resistors R1 and R2 to give him 2.5 V on the TL431 when the output sees 3.6 V ...

Perhaps the most surprising product unveiled by Apple last week was its new environmentally friendly $29 Battery Charger and six AA batteries. AppleInsider offers a look at the rechargeables that ...

Milwaukee unveiled two new charging solutions for the landscape industry: the M18 Six Bay Daisy Chain Rapid Charger and the M18 Dual Bay Simultaneous Super Charger with four-point mounting.

A short circuit can expel gas Specs Comes pre-charged: Yes Charge cycles ... Energizer Rechargeable AA and AAA Battery Charger. See It Pros Can charge up to 4 batteries at once ...