Dc resistance tester built-in battery maintenance:

Charge on a regular basis

When the instrument for a long time without using or use batteries after a period of time, will cause the battery is low, need to the instrument battery charging, charging first plug in ac power cord, open the power switch, the charge indicator into a red light, start the instrument battery charging, charging test instrument can use communication at the same time, The switch can also be hit in the middle position, so that the instrument in the closed state. When the charge indicator turns green, the battery is fully charged and you can turn off the power switch.

Avoid discharge

When the DC resistance tester indicates low power, it needs to be recharged. If the tester has an AC input interface, it can be used with AC power, but it must be directly supplied by AC power, not by AC floating charge.

For the ac floating charge tester, that is, THE AC only charges the DC resistance tester, and then the power supply is discharged by the battery. This kind of instrument should not be charged while testing, similar to mobile phone charging, we do not advocate the use of mobile phone while charging. The reason is that the battery is afraid of heat, charging and discharging easy to cause the battery overheating.

Storage environment

The body of the built-in battery has metal contacts. For the welding of the charge and discharge line, such as in a humid environment, the metal contacts will rust, resulting in high impedance at the connection, and battery discharge will have power loss at the rusty connection. It is easy to feel that the battery is extremely undurable.