Dear All,
Firstly, I want to charge the battery from usb and solar panel. Vin may be 4.5V between 5.5V. Battery is 3.7V Li-on 18650 2000mah(x2 parallel). In total, 3.7V 4000mah.
Also, I also want to monitor the charging status of the battery.
Secondly, after I want to boost the battery to 5v and use it on my system. The system is always on and so the battery will always be used.
In some cases the system will draw 5-10mA (mostly like this) and sometimes 200-300 mA.
I want to discharge and charge the battery at the same time to make the batteries go longer. Would this be a problem for the battery life in the future?
I'm looking for a schematic where I can do it. Which development board or chip can I use in Texas Instruments?
Is there someone who can help or what do you recommend?
Regards,