Bluetooth Battery Monitor

Having two cars in the shed that don’t get driven enough, I always tend to try and either start or at least charge their battery to keep things happy. Recently, I stumbled across these little fellas on eBay and thought I’d have a go!

eBay Link

I chucked the first monitor on a dead(ish) battery and put it on charge and took some screenshots of the app on my Android smartphone to show you what it can do:

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There are a couple of really sweet tests the monitor can perform and log in the app, including start/crank voltage, mileage log ( In minutes ), and RPM charge voltage ( to ensure alternator is in good working order ).

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The install is easy if you just want to throw the monitor down as pictured, but I will place them into a better spot here they are hidden.

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The biggest issue with having two battery monitors is that the app doesn’t allow two profiles, so, you must connect to one and then choose the other. To combat this I installed an application called “Island” that allows you to run two instances of the one application:

Island Android App

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The app is great with it’s notifications and logs data on the monitor until you come into range and connect to it. I believe it has a 30 day life before it wipes data from the monitor itself. The app holds infinite history on all aspects of your battery.

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For a relatively cheap little gadget, I’m happy with this. The app needs a polish but otherwise it’s super helpful!

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