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Great and simple to use tool. I can not be sure.how accurate it is, but after a short playing with it I found two ruined usb-cables, faulty wall socket charger and one under-capacity power bank. It is also a funny toy for techno enthusiasts... Good value for money spent.
Verified purchase: Yes | Condition: New
However this tester is build well it does not meet sellers specification. Resolution step is 0.03 A not 0.01 This results in high error in mAh reading see photo 3. The first model is the older version with the COB chip This one is more accurate The second has a Holtek chip. Pity , it nice display and quality design but reading is very very inaccurate
Verified purchase: Yes | Condition: New
It's very useful for measure voltage and current of usb ports, its display is easy to read and is capable to collect information about the amount of charge in mAh.
Verified purchase: Yes | Condition: New
Interresting to see what current and voltage is being delivered. It does not however allow the full charge speed and current through. When plugging my Samsung Note, it tells me 1 hour to full charge. When plugged in through the voltmeter the time rise to almost 2 hours. Nice "toy" but not for everyday use.
Verified purchase: Yes | Condition: New
for use with many battery types using a male and female USB cable with open ends testing both charge and discharge capacity .
Verified purchase: Yes | Condition: New
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