powering the pi 2 with aa's - Raspberry Pi Forums
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first question: have raspberry pi 2 , want power using 4 2800 mah rechargeable aa batteries , read online when connected in parallel mah adds up, if so, can implement increase pi's life on batteries? if not, last 3.5 hours? given pi draws 800 mah.
second question: want connect rechargeable batteries 5v solar panel whilst powering pi, how can prevent batteries overcharging. there way measure how full batteries either through pi, or through connect battery case whilst in use? know it's possible because phones it.
first question: have raspberry pi 2 , want power using 4 2800 mah rechargeable aa batteries , read online when connected in parallel mah adds up, if so, can implement increase pi's life on batteries? if not, last 3.5 hours? given pi draws 800 mah.
second question: want connect rechargeable batteries 5v solar panel whilst powering pi, how can prevent batteries overcharging. there way measure how full batteries either through pi, or through connect battery case whilst in use? know it's possible because phones it.
there no type of battery give satisfactory results if connected directly rpi. rpi should fed 5 volts +/- few percent. 4 nimh aa cells series manage when freshly charged fall low , give short run time. need ubec between battery , rpi.
easiest solution use 1 of usb powerbanks intended recharging mobile phones or tablets. of them have solar panels built in. panels near large enough produce enough current run rpi without depleting battery.
if opt rechargeable powerbank check specs before purchase. cannot, or not recommend to, provide power , recharged @ same time.
easiest solution use 1 of usb powerbanks intended recharging mobile phones or tablets. of them have solar panels built in. panels near large enough produce enough current run rpi without depleting battery.
if opt rechargeable powerbank check specs before purchase. cannot, or not recommend to, provide power , recharged @ same time.
raspberrypi
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