Due to low morning temperatures in the van this past winter, my lithium batteries would not charge until they warmed up later in the day, wasting lots of solar power. I have installed Facon model CW-E313 pipe elbow heating pads onto the battery sides to allow me to warm up the batteries on those cold mornings.Specifications of the pads are shown at the end of this video. To see an update on using these heating pads, go to: [ Ссылка ]

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