My experience was happier than that. I also bought two and although
one reads 0.3 Volts lower, they appear to be consistent regardless of
temperature.
        There has been a lot of discussion on various RV sites about
the problems you mentioned. Perhaps their quality control isn't up to
snuff.
                                        David (dsl82westy)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

>  >  See here > _Click  here: 12/24 Volt LCD Voltage Meter - Camping
>>  World_
>  >
>(http://www.campingworld.com/browse/skus/index.cfm/Outdoor-and-RV-Accessories/19983/skunum=19983:src=SRQB)
>>
>
>That's exactly the one that is worthless.  Anyway, I've had a couple
>and the displayed voltage is VERY temperature sensitive.  That is,
>when cold it reads WAY low--like 10.x.  I checked it out--brought
>it out from the warm indoors and it read much higher.  Checked it
>with a regular voltmeter to confirm it was way off when cold.
>
>Richard
>Boulder