These are honestly pretty decent, and one of the few reasons I will buy lithium primary cells. Alkalines don't have the shelf life, and they leak once they die, so they're pretty nonideal in a road flare. Lithiums sidestep both issues and justify their price here.
I prefer to store my emergency equipment without batteries. Once the battery is inside the unit (e.g. Flashlight), the battery starts to drain and will (likely) be dead when needed. As reported in comments, these have a rather difficult battery replacement design (e.g. Hard to add batteries when needed in an "emergency"). So, maybe pass. What say others?
They should just build this feature into cars and call it Blinky McBlinkface... or hazard lights... or something.
I've never torn down or measured these, but I have plenty of flashlights that don't drain the cells at all when they're off.
However if you store batteries in a hot vehicle, they will degrade faster. Personally I'd just use alkalines and replace them every 5 years or so (less if they've had use) or sooner the first time if the included cells are generics or zinc carbon instead of alkaline.
h have these and had to use them after a blowout. I did store them without batteries but had them in a box next to the lights. These worked great even in the day light turned into super lights at night. would buy again if needed and I even paid full price the first round.
>They should just build this feature into cars and call it Blinky >McBlinkface... or hazard lights... or something.
- dave_c
No, these must be separate device. Because you can place it further on the road as early warning and because they must not depend on your car electrical system -- it might be damaged/destroyed/whatever.
Oh wait... hazard lights... they've done it anyway!
Ive had something like these for over a decade. They saved my skin when I had a total electrical failure where I couldn't use my hazards. They also put off a different light pattern from normal hazards that seem to make people take notice and slow down
Comments & Reviews (8)
I've never torn down or measured these, but I have plenty of flashlights that don't drain the cells at all when they're off.
However if you store batteries in a hot vehicle, they will degrade faster. Personally I'd just use alkalines and replace them every 5 years or so (less if they've had use) or sooner the first time if the included cells are generics or zinc carbon instead of alkaline.
- dave_c
No, these must be separate device. Because you can place it further on the road as early warning and because they must not depend on your car electrical system -- it might be damaged/destroyed/whatever.
Oh wait... hazard lights... they've done it anyway!
Thank you!