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Old 08-22-2019, 08:38 AM   #15
Winnebago Camper
Join Date: Apr 2019
Posts: 44
Originally Posted by Morich View Post
We often want to know what the battery level is but not spend a lot of time opening the covers, etc. so I thought this might look good to some of you old hats who remember what we thought of lights on the dash!
I keep one of these in all my vehicles, just as a way to test things without having to open the hood! On RV, they can do a quick check of coach and chassi batteries if you have a lighter type plug on each.
I do not leave them plugged in full time as I feel that might tend to shorten the life but just keep it handy fro quick checks like when the engine seems a little slow on starting.
Non of them will indicate the fluid level and that is what I would be able to keep an eye on without pulling the floor up each time
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Old 08-22-2019, 12:21 PM   #16
Join Date: Nov 2018
Posts: 382
Originally Posted by sunvale1 View Post
Non of them will indicate the fluid level and that is what I would be able to keep an eye on without pulling the floor up each time
Got that right, for sure. Now how to explain what "maintenance free" really mean to the life of a battery! Kind of like the new lawnmowers that advert that you never change the oil! No consideration given to how long it lasts!

Checking voltage is just a small part of looking at batteries and I only use it as an early warning sign to help avoid the totally dead thing.
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Old 08-22-2019, 06:37 PM   #17
Winnebago Owner
Join Date: May 2017
Posts: 137
Originally Posted by TATANKA01 View Post
Quite often Harbor freight has a coupon for a free multimeter which is much more useful and (FREE). Even if you had to buy it from them it is less than $10 and measures ac dc voltage, resistance and current flow. I carry one in each vehicle as every time I purchased something there I got another meter free.
I've got a bazillion of those. All six of our vehicles have one. But, while you're driving, don't you think it is a bit distracting trying to find two points to get your test leads onto?

The constant reading devices are cheap insurance. They can easily tell you the status of your alternator (voltage while running) and battery (voltage during cranking) - all without leaving your seat.
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Old 08-22-2019, 07:08 PM   #18
Join Date: Nov 2018
Posts: 382
The ease of use on checking voltage is part of the "dumbing down" process that has come about since the old days of having a meter on the dash which actually showed the voltage. At the time it was stated that it was much more useful for the normal person to just have a light (aka idiot light!) and not have to think about what the meter was telling them. Now when we really need to use a meter to know what is going on, many have lost the training to know what is up with the RV and battery.
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