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Battery Circuits

Portable Battery Charger Via USB Port

Portable Battery Charger Via USB Port

Almost all devices like mobile phones or iPods can be charged by this tiny USB battery charger through USB and by using only two AA cells.

USB LI-Ion Battery Charger

USB LI-Ion Battery Charger

The project aims to create a charger for lithium ion batteries which takes its power from the USB port of a computer.

ATmega8 Based Lithium Ion Battery Charger

ATmega8 Based Lithium Ion Battery Charger

The project illustrates a universal charger for Li-Ion battery using a Smart Battery interface based on Atmel ATmega8 microcontroller with GCC software.

Multi-Chemistry Battery Charger

Multi-Chemistry Battery Charger

The project produces a battery charger that may be used to charge NiMH, Li-Ion, NiCad, sealed lead acid, and rechargeable alkaline batteries.

Charger Circuit for Lead Acid Batteries by MAX773

Charger Circuit for Lead Acid Batteries by MAX773

The circuit utilizes the MAX773 current-mode controller and the MAX471 current-sense amplifier for charging lead acid batteries.

Charger Device for NiCd and NiMH Battery Cells

Charger Device for NiCd and NiMH Battery Cells

The project illustrates a constant current and automatic charge termination when the total voltage for all cells reach the setting voltage as it produces a NiCd/NiMH charger.

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