Hi,

I am currently building a robot and need some recommendations for a battery
source.

I require a 12V source that can source approximately 300mA for at least 15
minutes. I have
considered using remote control car batteries, but was hoping that there may be
a cheaper source.

A friend has also recommended using solar power, but
I do not want to limit the robots use to bright places.

Lastly, cost is a major factor as I am a student and do not want to spend
all of my money on a battery
and charger, and then not have money to work on other projects.

Any recommendations would be greatly appreciated.

Thanks,
Marc

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