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Dual 2.1 amp usb and voltmeter combo (in one cigar lighter sized housing)

Some items like these come with with small inline glass tube fuses. Do yourself a favor and toss those cheap glass fuses and holders in the trash. Use inline mini blade fuses in a waterproof holder or a fuse panel instead.
 
Some items like these come with with small inline glass tube fuses. Do yourself a favor and toss those cheap glass fuses and holders in the trash. Use inline mini blade fuses in a waterproof holder or a fuse panel instead.
If buying a new fuse holder, sure, I like the mini blade too. But if it comes with a glass tube fuse why not use it? What's the issue?
 
If buying a new fuse holder, sure, I like the mini blade too. But if it comes with a glass tube fuse why not use it? What's the issue?

The issues are; corrosion for the ends of the fuses, vibration, quality of the the connection between the fuse contacts and the included wire, quality of the holder (if the tiny plastic dents break or bend it is toast). Will they work most of the time without issue? Yes. It is that most of the time that bothers me vs. something I know to be better quality for a marine application. I am a bit (ok perhaps very) OCD when it comes to wiring. Good connections = less things to have to trace down when issues pop up. Plus one less fuse type to keep on board. Don't get me wrong I do have a distribution block with the very large glass tube fuses but those are gold plated and in distribution block.
 
I picked up a dual batter voltmeter with a rocker switch for battery 1/2/off...will install this weekend. Sorry for the huge picture. Amazon has for $21 with Prime. I like this because I can check each battery with a single meter and also turn off to avoid any draw. Now that I cannot plug in my batter charger between trips I need to watch my batteries more closely! I also got a dual 2.1A USB charger, plan to install that in the glovebox.

Here is the link: https://www.amazon.com/BANDC-Voltme...id=1492178485&sr=8-2&keywords=bandc+voltmeter
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@eticket Could you please share the link to that! Thank you!

Added...hope it works but if not just search for BANDC voltmeter. There are a few more that look just like it.
 
Anyone using one of these in place of the cigarette lighter socket on the helm?
 
Anyone using one of these in place of the cigarette lighter socket on the helm?
I did. Referencing the round ones with USB ports and voltage reading in the middle. Fit perfectly in both spots. (AR240)
 
Hope this is not too much of a thread hi-jack, but got my larger dual battery volt meter and USB charger installed. The meter is pretty big and I could not find a good spot on the helm, so I installed it on the port side under the seat, actually very close to the batteries. I have stoop over to see it, but one a trip is not a big deal. The USB charger is in the glove box. I like the location but I directly wired it to one of my batteries (with in line fuse) and it has a small LED light on it, which will always be on. The bugs me, so next weekend I think I will be putting in a terminal block downstream of my main battery switch so the charger can be switch off when the main batter switch is set in the off position. In the meantime I've taken note of my battery charge with my new meter and next weekend I will check if there is any movement in the charge after that LED has been on for a week.

IMG_3640.JPG
 
Thanks for posting. They sell various configurations. I got the one with the voltmeter, usb, power plug and then added a matching switch. I plan to shut the panel down when not in use.
 
Finally got a picture to share of how I setup my twin units on the dash. I only had the House batteries on. No cutting needed.
View media item 4627
 
Finally got around to installing the one I got from Amazon. I got this one https://www.amazon.com/gp/product/B01DVTQ46A/ref=oh_aui_detailpage_o00_s01?ie=UTF8&psc=1
But I added a switch instead of the cigarette plug. The volt meter monitors the house battery. That way I can monitor the house battery when sitting and I can also see that the VSR relay closes and starts to charge when under way. The starting battery is completely isolated now and is still monitored on the OEM gauges.
The switch kills the panel and OEM power plug.

 
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