1. Security
Because the moment the car starts, it needs a lot of current support. portable car starter battery ，Therefore, both the power supply itself and the wires used require extremely high standards. If not handled properly, it will lead to security incidents.
2. Battery capacity
The power supplies of big brands are usually marked truthfully, and the batteries also use high-end media. It is usually calculated that the power will not lose much if it is not charged for several months.
3. Function and size
Because the vehicle is under normal circumstances, the chance to use the emergency power supply is still relatively small. Therefore, adding some new functions can also increase the frequency of use of such products. For example, it can be used to charge tablets, mobile phones, etc.
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