Reputations are built over time and ECHO has a solid foundation that’s 50 years in the making. The ECHO eFORCE™ line of products is built upon the existing foundation of our gas-powered reputation. ECHO eFORCE™ is one battery platform for all ranges of ECHO 56V featuring long-lasting power that quickly swaps from product to product. The ECHO eFORCE™ batteries feature ECHO's exclusive eCM Technology™ to maximize the battery's lifetime.