... than 15V, especially when you use a DC adaptor, please measure the voltage before connect it to ... batteries, you MUST use the enclosed polarity reverse adaptor to charge HiModel lipos, refer to the image ... 3S polarity reverse adaptor1 x 4S polarity reverse adaptor Comments:Note: Make sure the input voltage is ... than 15V, especially when you use a DC adaptor, please measure the voltage before connect it to ...