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Mercury Electronic Kill Switch - "1st Mate System

Posted on 6/9/22 at 12:51 pm
Posted by dawg23
Baton Rouge, La
Member since Jul 2011
5066 posts
Posted on 6/9/22 at 12:51 pm
Has anybody bought one of the "new" (new to me) Mercury 1st Mate kill switch systems ?

I had one installed this week and have a battery issue. The "fob" you wear (If you land in the water the fob sends a signal to the onboard "hub" telling it to kill the engine) is eating batteries like the proverbial MF'er. Is this normal ?

Before you ask - yes, I have a conventional kill switch with a lanyard. With this new system, the existing kill switch still works - the 1st Mate is redundant or a back-up (in case you forget to hook your old kill switch to your life jacket). The system also calls the people that you have entered on a notification list, telling them where you are located if you fall overboard.

Anyway -- it's the battery consumption (CR2430) that I'm asking about.
Posted by deeprig9
Unincorporated Ozora
Member since Sep 2012
73267 posts
Posted on 6/9/22 at 4:28 pm to
I had a fob once that was eating batteries and I changed battery brands and the problem stopped. Try a higher cost battery and see if that helps.
Posted by dawg23
Baton Rouge, La
Member since Jul 2011
5066 posts
Posted on 6/10/22 at 4:42 pm to
Using "Energizer" batteries. Is there a brand you found that holds up better ?
Posted by 2dogs
ArkLaMiss
Member since Feb 2011
158 posts
Posted on 6/11/22 at 7:33 am to
Try the Ranata brand battery. If your problem continues it’s not the battery.
Posted by 2dogs
ArkLaMiss
Member since Feb 2011
158 posts
Posted on 6/11/22 at 10:33 am to
The fob's batteries have an estimated life of 100 hours before they are likely to need changing.
Posted by dawg23
Baton Rouge, La
Member since Jul 2011
5066 posts
Posted on 6/11/22 at 1:29 pm to
I fiddled with it yesterday using the app. Every time I changed pages on the app, when I checked the battery strength it was slightly higher. Started around 5%, then 15, then 17 , the 24, etc. until it went to 100%. Almost like there's a capacitor in the circuit and you're charging it.

Really weird - but seems to be OK now.
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