The product functions adequately, however, the manual instructs users to fully charge the battery prior to use. The manual fails to provide information on how to determine when the battery is fully charged. Specifically, the manual indicates that the red charging light does not turn off, even when the battery is full, making it impossible to ascertain the battery's charge status. Ideally, the device should indicate a full charge by changing the charging LED to green or by causing the red LED to blink during the charging process.
