LC709204F Battery Fuel Gauge onsemi LC709204F Battery Fuel Gauge is used for 1-cell Lithium-Ion/Polymer batteries. This device is a member of the Smart LiB Gauge family of fuel gauges that uses a unique algorithm called HG-CVR2. This accurately measures a battery's Relative State of Charge (RSOC) even under unstable conditions, including changes in battery temperature, loading, aging, and self-discharge. The HG-CVR2 algorithm can be easily configured to begin taking battery measurements by setting up a few parameters after battery insertion, reducing complexity in the development process. LC709204F also includes SOH reporting and multiple integrated alarm functions to support battery safety.