What can I expect from EV Box (despite car brand)?
Basically, all these solutions are range extenders basing on lower battery current flows (for both directions: drain or charge) and lower energy usage.
- it promotes more accurate drive with enhanced pedal precision for full loads
- it protects the battery from unwanted rapid burst discharge, by creating "kick down" behaviour only at the end of pedal position.
- it reduces battery wear by adding coast/glide functionality. EV car without box drains or charges this battery, but it is almost impossible to coast with zero energy usage. As battery efficiency and motor efficiency are not 100%, continuous energy flows cause thermal loss of energy. Box improves car behaviour and thanks of about 20% lower energy flow - it reduces battery temperature and prolongs its life!
It is especially important in Nissan Leaf (both 2012-2016 versions and new 40kWh versions) as Leaf hasn't thermal management of battery. Using Leafbox you will quickly notice, that your battery SOH (State of Health) will stop descending or at least - slow down. It's simple: less bi-directional energy flow = less energy converted to temperature = lower temperature of battery = longer battery life.
Range extender, torque controller & coast/glide mode for Opel Ampera-E and Chevrolet Bolt (2016+)