Charging Lithium Ion Batteries (IMAGE) DOE/SLAC National Accelerator Laboratory Caption This is an apparatus used to charge lithium ion coin cell batteries at various rates with different levels of current at the Stanford Institute for Materials Science and Engineering. The results indicate that the benefits of slow draining and charging may have been overestimated. Credit SLAC National Accelerator Laboratory Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.