<human>: Here is a goal: How do I give power to my LED bracelet ?

Which way makes more sense to accomplish this goal?

OPTIONS:
- Connect your bracelet to a 12 V / 7 Ah Lead Acid car Battery.
- Connect your bracelet to a 3.7 V / 100 mA Lithium Ion Polymer Battery.
<bot>: Connect your bracelet to a 3.7 V / 100 mA Lithium Ion Polymer Battery.