Hey, I've got a Li-ion battery, 2 Amp .
Can I use a DC booster to boost it to 5V and connect it with a USB cable into Arduino UNO to power it?
I've got a solar charger connected to the battery already so the voltage will never go as low as 3V 
and never as high as 4.2V
I'm trying to find a cheap way to power Arduino with Li-ion batteries.
Edit: Power Consumption is around 270 to maximum 300 mAmps, depends on the LCD screen to be honest.
That would be fine.
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Thanks!
If the device is running 24 hours a day, then you need to ensure that there is enough charging current during the day to last throughout the night.
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Have a read of methods to charge lithium ion batteries first !
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Sure, it allows me to connect the charger to either a solar panel, two, etc or with a USB port to a power source.
Even if the solar panel can't charge the battery enough I can plug it somewhere else with the USB port.
The MPPT Cn3065 charger I use can charge safely one 18650 battery. To be honest I tested it with 4 in parallel ( 3.7V 8 Amp) only to see if this thing can handle so many batteries, and it worked ok. It was only a one in life test though, through the day I use only one battery.
Thanks for the article!
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