Cartek battery isolator gt8/13/2023 I don’t see 297 days to drain the battery as being an issue. That said, one of the circuits on the MSEL device would allow you to use the familiar “flag” switches which might be a good idea. certified devices which have been on the market for a while so if that’s an issue, I’m not sure I want to run at that track. Randy gives a thumbs down because people might not know what to do with the buttons. It’s theoretically possible for it to fail closed, but that’s remote. My unit constantly monitors temperature, voltage and current on both sides of the device, and checks for a short-circuit condition before activating. Yep, that would be a massive risk if you built one in your garage or bought a poorly engineered unit. Neil, points out that if the MOSFET fails you could lose the ability to isolate the battery. One milliamp parasitic draw in standby mode.The only way to isolate the battery is via the driver or someone outside the car who knows what to do.This adds weight, resistance and the length of positive cable that could potentially short. However, I’ve seen multiple builds where the positive cable is run long distances to one of the shutoff locations. The switch should be located next to the battery with cables or rods run to the disconnect locations. Proper installation takes thought and some effort.Same if the driver’s side is pinched up against a barrier. If it lands on the driver’s side, the switch is inaccessible. If the car rolls it will land on one of four sides. If the driver is knocked out it’s up to someone on the exterior. There are typically at most two ways to isolate the battery one inside the cockpit and one in an approved location on the exterior of the car.Pretty much fail proof (so long as you don’t buy a junk knockoff).Technology has come a long way to mitigate the solid-state device failure modes and remove many of the situational failure modes that exist with mechanical switches. If you roll the car and the mechanical switch is inaccessible or if you’re knocked out and there is no one to turn the switch off does it matter that the switch didn’t fail… nope. That said, I’m not sure that 20GBP is going to get you a reliable switch.Īll that matters is if the car can be isolated when required and device failure is just one small branch on the failure tree. A mechanical switch operated by a rods and/or cables is a proven way of doing things.
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