Negative Positive
Title: Not the greatest
Review: This gauge works okay, when it's working. But the batteries drain too fast and are inconvenient to replace. First, it requires flat camera-type batteries, not readily available AAA or AA batteries. Second, a very small Phillips screwdriver is needed to open the unit to get to the batteries. So right when you need to replace the batteries - say when you're out on the road - you may find yourself without the right batteries or the right screwdriver.
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