Method of use: connect the display plate Positive and negative port with the tested battery Positive and negative port, the digital tube will show the quantity of battery electricity in real time
Digital Color: red contour, blue of the display block (when the amount of electricity of the battery is full, it will be all on)
When the battery voltage exceeds N * 3.3 V, 1 block of electricity quantity will light (note: N represents the amount of the battery)
When the battery voltage exceeds N * 3.5 V , will illuminate 2 blocks of electricity quantity
When the battery voltage exceeds N * 3.7 V, it will illuminate 3 blocks of electricity quantity
When the battery voltage exceeds N * 3.9 V, it will illuminate 4 blocks of electricity quantity
When the battery voltage is less than N * 3.3 V, the 4-block display will be off; represents a battery less than 3.3 V, and you can charge the battery
They don't have the right item but when customer call for replacement they will say they don't have for this statement they will hold the customer call they will put in mute later they will say they don't have all are faulty item I've ordered for micro SD to micro SD but they have shipped SD to SD they are not ready to listen to the customer need also.
It is a great product for what it offers. The digital zoom is where it falls short in its clarity being digitally zoomed, but not very bad.
The optical lens is is brilliant.
Overall a great product at this price point.