1. Pull the white button on the backside for about 3s until it shows “1-U” and release it. Pull it again for 1s it shows “2-b” and release it. Pull it again for another 1s it shows “3-c” and release it. Pull it again for another 1s it shows “4-d”.
2. When it shows “1-U”, pull the white button for 3s then you can adjust the voltage admeasuring apparatus. Pull it for a longer time, the voltage goes up. Then pull it for another longer time, the voltage goes down. Do it again and again. To save and exit Automatically after the screen is twinkling.
3. When it shows “2-b”, you can change the type of battery.
12V: 1pc 12V Lead-acid battery
3.7V: 1pc 3.7V Lithium polymer battery
3.2V: 1pc 3.2V Lithium iron phosphate battery
1.2V: 1pc 1.2V NiMH battery
4.When it shows “3-c”, you can adjust the number of batteries
Please refer to the following:
12V Lead-acid battery: 1-8pcs
3.7V Lithium polymer battery: 2-28pcs
3.2V Lithium iron phosphate battery: 3-32pcs
1.2V NiMH battery: 10-70pcs
5. When it shows “4-d”, you can adjust the display mode. “V” is voltage mode. “%” is percentage mode. “V %” is voltage& percentage cycle mode.
Capacity Display Parameters:
Battery voltage > 11.2V, 1 grid
Battery voltage > 12V, 2 grid lights
Battery voltage > 12.5V, 3 grid lights
Battery voltage > 13.3V, 4 grid lights
When the battery voltage is < 11.2V, all four grids are turned off, which means you need to charge the battery right away.