Build an electronic circuit

Is the electronic circuit plus the power source with an ON/OFF switch. The circuit should be able to use the current generated by the dc current (preferred: Rechargeable lithium batteries) and sent it to a of nichrome coil wire in order to heat it enough (100 c degrees) 1- The current should be sent as intermittent to reserve the power of the batteries as long as possible. 2- The batteries should be rechargeable to repeat the experiment successfully. 3- The circuit should have an On/Off switch. We need to understand the following: A - How much dc power is consumed to reach the desired temp? B – How long the batteries will be lasting until the need to recharge again? C – What components should the electronic circuit have in order to achieve the required functionality? D – What components will do the intermittent function? E – What specifications for the Nichrome coil are required: thickness, length etc.)? - Can we get the diagram circuit that can achieve the project as specified above? - How much will cost and the time to deliver and send the diagram. - Can we order a prototype? How much it will cost and the time to deliver and send the circuit? Thank you (Removed by Freelancer.com Admin)