OBD2 (On-Board Diagnostic) scanners are very important to know more about cars and are especially important for electric cars. With them it’s possible to know the SOH (State Of Health) of an electric car battery and have the information required to diminish further degradation.
For example, when we know the temperature of our electric car’s battery we can adjust our driving or charging behavior accordingly. If the battery is already hot we should avoid fast charges and discharges to prevent high degradation rates.
I only recommend the more expensive OBDLink LX if you have a Mitsubishi i-MiEV, Peugeot iOn or Citroen C-Zero and you want to use caniOn, otherwise go for the cheaper option, the Konnwei KW902.