As long as the conditions are suitable, which charging method can be used, this condition is that the voltage is suitable, the charging current is suitable, and the charging can stop after the charge is finished
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So your car charger voltage needs to meet the following conditions.
1: This voltage car charger is still more.
2: Charging current can also be (each battery can withstand the maximum charging current is not the same, but can be designed to be a small current, at most is a long charging time, so this problem is not big)
3: The most critical thing is how to know the end of the battery charge (this problem is more complex, simply say that each type of battery is different, we can judge the condition is that the charging current is less than how much is considered to be full)
So you need to be able to achieve the above conditions can be used, but can not often use (affecting battery life), specific there is no special I do not know, can only answer to this!