Main Features: - Adjust to three kind of battery 7mm, 10mm, 20mm separately. - A great gadget for instant testing of your battery capacity, can check button cell battery's power. - Place cell battery into the concave and check the pointer moves slightly to accommodate the battery to make sure the positive and negative terminals is in good contact.
Operation Manual(three different zone): - When the indicator is on red zone, the battery is low power station and must be replaced. - When the indicator is on yellow zone, the battery is current. - When the indicator is on green zone, the battery is full.
Type: Repair tool Material: Plastic
Package weight: 0.076 kg Product size (L x W x H): 10.00 x 6.00 x 3.00 cm / 3.94 x 2.36 x 1.18 inches Package size (L x W x H): 11.00 x 7.00 x 4.00 cm / 4.33 x 2.76 x 1.57 inches