I plan to use a 3.7V Li-Ion battery from a mobile phone as a power supply for a variety of devices that usually run on 2 1.5V AA batteries.
This is what I plan to do. Tell me if anything will go wrong:
1. Use a voltage regulator (adjustable LM317 or a 3.3V LM3940 with a diode to drop it down) to bring the voltage to ~3V.
2. Connect the battery to a MCP73833/4 with all required components according to the datasheet.
That should keep it charged (and not let it be overcharged) as long as it's connected to a power source.
3. To prevent over-discharge, I can maybe just have a relay/transistor switch to break the circuit after voltage across the terminals of the cell drops below critical (around 3V) [When not connected to the power source]
Please do reply. Thanks.
This is what I plan to do. Tell me if anything will go wrong:
1. Use a voltage regulator (adjustable LM317 or a 3.3V LM3940 with a diode to drop it down) to bring the voltage to ~3V.
2. Connect the battery to a MCP73833/4 with all required components according to the datasheet.
That should keep it charged (and not let it be overcharged) as long as it's connected to a power source.
3. To prevent over-discharge, I can maybe just have a relay/transistor switch to break the circuit after voltage across the terminals of the cell drops below critical (around 3V) [When not connected to the power source]
Please do reply. Thanks.