The most popular wearable electronics batteries are coin or button batteries, which come in various sizes and chemistries and offer different voltages, discharge currents, and prices.
Silver-Oxide Chemistry
Silver-oxide batteries are non-rechargeable batteries that use silver oxide as the cathode material and, when compared with alkaline batteries
Lithium-Ion Chemistry
Lithium-ion chemistry is a rechargeable chemistry offering batteries with an output voltage of 3.2-3.7 volts that can withstand 500-1000