I have a Midnite Solar Kid charge controller and I use this temperature sensor to monitor the temperature of my battery to ensure proper charging. Without them you can damage your expensive batteries at low and high temperatures. We are neither hot nor cold right now because we live in the Pacific Northwest of Washington State. However, my wife and our dogs do go for walks in the mountains before and after winter when we can take our van there. Pus, we love to travel down south as often as possible. It's good to keep a cool head and replacing our battery is very expensive and cumbersome when traveling. The quality of the cable seems to be good.
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