In summary, Cornell Dubilier/Illinois Capacitor RJD Series lithium-ion batteries are the right choice where a high level of performance is desirable. They offer the highest storage capacity which can increase the operating life of IoT wearables and Bluetooth devices. The round package design  matches standard sizes and popular applications. A wide operating temperature range allows use in varied environments. Reliability is enhanced by a patented design that virtually eliminates internal shorts. Overall, the design is safer than conventional rechargeable options and is UL listed.