How to use the meter:

1.  This meter lamp head is with an adjustable angle within 270 degrees, with this adjustable angle meter for a good position to face you so that you can see the pop-up meter indoor while you place the battery charger on the window sill for illustrating the strength of the sunpower and the power current output for charging the battery.

2.  Adjust the meter lamp head angle for good position in front o fyou for easy reading.

3. Check and scan the mter, which shows and confirms the charging activity when you place the rechargeable battery in the charger and face the solar panel to the sunlight. The meter needle pin will move to the yellow area side when there is as trong sunlight.

4. Check and scan the position of the meter needle pin. It should indicate a certain level when there is a bright sunlight. For example, if the needle pin points at 100mA, it means that the solar power energy is 100mA for charging the batteries. therefore, it takes 5 hours for charging 4pcs 00mA batteries. The more sunlight is received, the more energy will be stored in the batteries efficiently.

SIZES-                                 100mA                   80mA               40mA

AA (UM-3) 500mA              5 hours                  6.25 hours         12.5 hours

AAA (UM-4) 180mA          1.8 hours               2.25 hours           4.5 hours