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This is quite a handy little gadget. When plugged into a USB port it will tell you the voltage available. When an item such as your phone is plugged into the other side it will then tell you how much current that device is taking along with the voltage supply (as this may be lower than without anything plugged in). If the voltage drops significantly but the device is only drawing low current then maybe the USB port is faulty. If the voltage remains the same and current draw is high (1 amp maybe), then you know you have a good USB port. Excellent for testing those 'cheap' USB chargers to see if they will deliver what it says on the box! Very useful and very cheap. Cheap plasticy thing but good value.
Verified purchase: Yes | Condition: New
Nice display - very useful. Only one output whereas other products on the market can have 2 outputs. Similarly there are other similar units that can provide an indication if the battery capacity under charge & also the time taken to charge the battery. This is a 'simple' type one for non techies so recommend for ufvyiubfall inti that category!
Verified purchase: Yes | Condition: New
works well with easy to read display, only issue is if you are drawing a small current 10~20ma it fails to count use so not a good measure for low power devices nice way to check how well your power bank or phone are behaving on charge
Verified purchase: Yes | Condition: New
Cheap and easy to use. Does what it says but display changes a bit quickly and difficult to read current.
Verified purchase: Yes | Condition: New
Though the LCD display is not quite as good as my older unit but it is still a great design and great value, especially with right angle style making it much more compact than my older unit
Verified purchase: Yes | Condition: New