Unbranded Black Electrical Tools | sku-13903171527

This Unbranded Black Electrical Tools item (sku-13903171527) is a battery internal resistance tester listed for 100V electric vehicle groups and 18650 cells. It uses true 4-wire AC sinusoidal measurement to reduce the effects of test leads and contact resistance.

It has two function interfaces, a battery sorting function, a built-in battery and Android phone charger charging, with power-saving options. Its listed range extends to 200 ohms, with 0.01 milliohm resolution and measurements below 5 milliohms. HOLD enables the ZR function for internal resistance as low as 0.30-0.50 milliohms.

The listing also specifies a four-wire 1Khz AC sinusoidal meter with a 0.00001 ohm to 200 ohm range. It is listed for lead-acid, lithium-ion, lithium-polymer, lithium-iron-phosphate, alkaline, dry, hydrogen and button batteries. The unit is described as handmade.