Multi-level fixed battery card slot for battery measurement of various specifications.
Measurable battery types: various button batteries, 5, 7, 9V square batteries, etc.
Function: It can measure whether the battery is full or not. The color of the indication indicator is as follows.
- Red (RE-PLACE replacement or RE-CHARGE charging): If the indicator pin points to this block, the battery under test needs to be replaced or recharged, that is, the battery is basically unusable;
- Yellow（LOW）: The battery is very low, but some appliances can also be used.
- Green (GOOD): The battery is fully charged
ABS engineering plastic material, light and compact, easy to use.
Material: ABS engineering plastic.
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