Opti Mate TS-126. State of charge tester – all 12 V lead-acid & 12.8 V/13.2 V Lithium batteries. The ideal parts counter battery voltage tester for all 12 V lead-acid & 12.8 V / 13.2 V Lithium starter batteries – easily check any battery voltage instantly! Features Indicates static voltage & state of charge percentage for 12 V AGM, GEL & STD lead-acid & 12.8 V / 13.2 V Lithium LFP/ Li Fe PO4 batteries Easy to understand comparitive display compares voltage & state of charge for all vehicle starter battery technologies – helps educate customers Easy to use! Connect with the included clips to the battery or connect to an installed SAE battery lead Industry standard durability – Built to last The smart choice for a battery sales counter – check new batteries before sale or test returned batteries Length: 40″/100 cm Charge connector (input): 2-pin SAE (+set battery clips) Operation: fully automatic State of charge result in VOLTS & %, 3 different bands for STD, AGM/GEL & Li Fe PO4 4 series batteries Cable rating: SPT-2W 16 AWG (1.32 mm 2) Fuse: No fuse Use: -40 °C/-40 °F very low temperature, remains flexible at ‘below freezing’ temperatures Style: Fully enclosed electronic circuitry with multiple LEDs, SAE charge connector Easy to use! Connect clips to the battery & read the result. The Opti Mate battery tester’s microprocessor draws very low power from the battery itself to determine & display battery status. Tests all 12 V Lead-acid & 12.8 V / 13.2 V Li Fe PO4 (LFP) Lithium batteries & displays result that can be used to convey information to customer.