Raspberry pi 2 + T'Rex controller -> battery

hi, I need to know, how to supply raspberry pi 2 and T'Rex controller together. I have this battery (http://emotors.cz/pohonne/11445-giant-power-nimh-1600mah-72v-10-20c-.html) - 5000 mAh, 7.2 V, 10-20C.

I dont know how big voltage can I connect to raspberry. If I can connect in series or paralel rasp with T'Rex to battery or I need new battery for rasp.

PS. - if you have some good article about connecting raspberry pi 2 to T'Rex (arduino) through I2C, send me that please :)

thanks :)

thx

thanks :slight_smile:

so it means I can connect rasp with T’Rex through his 4 - I2C gpio pins??