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3 x AAA Battery Holder with On/Off Switch and 2-Pin JST : ID 727 : $1.95 : Adafruit Industries, Unique & fun DIY electronics and kits
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Car Battery Disconnect Switch, TSV 50A/100A/200A Battery Switch, Waterproof Heavy Duty Battery Power Cut Master Switch Disconnect Isolator for Motorcycle Marine Boat Camper RV ATV UTV Vehicles - Walmart.com
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