|Item Weight||12.8 ounces|
|Product Dimensions||4 x 2 x 2 inches|
|Item model number||7001|
|Manufacturer Part Number||7001|
|OEM Part Number||7001|
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Tekonsha 7001 12 Volt 4 Terminal Battery Isolator
|Price:||$17.00 & FREE Shipping on orders over $25. Details|
|You Save:||$13.00 (43%)|
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Tekonsha 12 Volt 4 Terminal Battery Switch fits all your needs. 4 terminal has insulated ground terminal for use with fiberglass or other non-conductive materials. Includes terminal nuts and lock-washers. Nothing else to look for or buy, saves time and money. Isolates starting batter. Assures primary battery power for starting engine and provides secondary battery current for auxiliary power. Cadmium plated, non-breakable heavy duty housing. Resists rust, gives long life in most any environment. Full time charging of both batteries. Gives you early re-use of secondary battery. 12 volt DC continuous duty.
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I have an RV, which has two batteries - one for the truck(starter, headlights, normal car-type stuff), and one for the camper(interior lights, water pump, etc). When I was plugged into "shore power" via the converter, everything worked fine. When I unplugged, however, the lights would get dimmer over time, even though I would drive places. While the truck was running, I tested the truck battery with a multimeter, and it showed 13.5 volts(it was being charged by the alternator). (with engine still running) I tested the second battery, and it only had 12.4 volts - it was good, but not receiving a charge. Just to make sure the wiring wasn't bad, I took the multimater to all posts on the battery isolator, and sure enough it was not giving a charge(13.5v) to the second battery. At this point, I was fairly certain the isolator was bad, and at 18 bucks it was worth a shot. It was a direct replacement for me(even had the same mounting pattern), so it was an easy swap.
After installing, I started the engine and tested the secondary battery with a multimeter. 13.5 volts. Happy happy. Joy joy.