In the U.S., about 250 million pounds of batteries wind up in landfills each year - along with a variety of toxic heavy metal ingredients. Now more than ever, rechargeable batteries are part of the solution.
In the City of San Francisco's new report, Charging Ahead: How to Find Powerful Rechargeable Batteries that Go On...and On
, the City of San Francisco's Department of the Environment teamed up with RPN to survey the best of household rechargeable batteries - that is, those familiar AAA, AA, and D cells. We reviewed the latest technologies, what is on the market, and the most important performance indicators to help you make a better choice.
The good news: rechargeables have improved dramatically. Previous generations of rechargeables suffered from self-discharge. That is, they would lose as much as 4% of their charge per day just sitting in the drawer. "Low self discharge" (LSD) technologies, introduced in 2005, have largely remedied that problem; however, navigating manufacturers' claims on what is or is not LSD is challenging. That's where this report might help.
For more information, including a shorthand view of the report's findings, go to the "batteries" section of the City of San Francisco's website
. There you will find the new purchasing specifications for high capacity, low self-discharge batteries (under "criteria for batteries"), as well as product summaries for AAA, AA, and D cells that meet these criteria.
RPN also held a webinar on rechargeable batteries, featuring findings from the report, on Sept 28, 2016. View the recording and slides on our webinars page