Before using our Digital Linear Gauge, please charge the secondary battery in the connection with the exclusive accessory AC adapter and use the gauge after disconnect it.
The battery can be used in the connection with the AC adapter when the power is switched ON. During this time, small amount of battery will continue to be charged. From the feature of the secondary battery, if you continue to use the battery in the connection with the AC adapter, sometimes the battery will become unavailable due to the battery deterioration. Moreover the long hours charging affects the secondary battery, so please avoid using it with the AC adapter for long hours.
If the AC adapter is disconnected when the power switch is left ON, the power is continued to be supplied to the gauge with the secondary battery so the power will be not switched OFF. Please use the power switch to turn the power OFF. The secondary battery can be charged in the connection with the AC adapter when the power is switched OFF. If you want to use the gauge for long hours not with the secondary battery but with the AC adapter, it will require modification of the gauge. Please contact our nearest distributor or send us an e-mail.