This model is the best ever used. It is already the third one. Anyway, even if you repeatedly charge using and using, the life of the built-in battery is long, it can be trusted. One complaint is that the content of the Japanese instruction manual is incoherent. I think that is probably because it is a literal translation of a foreign language. There is a switch called "POWER", but that is not a power switch, just a battery check. Even if this switch is "OFF", cell start is possible. This is because misunderstanding tends to occur because the instruction manual is incomplete.
While large-scale passenger sports cars have been struggling with batteries many times, I encountered this product and immediately thought that it was good to buy the engine as soon as I tried it and tried it
There is no problem with emergency engine starting performance. This time I bought the shorter of the code but I think that it is easier to use a longer code because it may be a work putting it in the engine room in one person's work. If the power shortage is a passenger car, there is no problem regardless of gasoline or diesel.