Amazon.com: Digital Low Voltage Protector Disconnect Switch Cut Off 12V Over-Discharge Protection Module for 12-36V Lead Acid Lithium Battery Low Voltage Cutoff for Solar Panel Lighting System Camper : Electronics
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12 V battery, low voltage shutdown, automatic on, recovery protection module : Amazon.de: DIY & Tools
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App note: Battery protection using low-side FETs controlled by GPIOs – Dangerous Prototypes