[Lambda's mouth twitches into a tiny frown, and she almost corrects Laura, but the kid is onto the next thing before she can actually do so. So, Lambda lets it go.]

I do possess an internal power supply. However, I do not currently have access to the equipment necessary to recharge it, so I must convert food into energy capable of being processed by my systems instead. Additionally, one of the women I am presently living with requested it of me.