OptiMate TEST – Cranking & Alternator
MSRP $44.95
12V tester for battery state of charge, cranking performance and vehicle charging system.
The ultimate pocket tester for on-vehicle battery performance & alternator voltage testing with either 12V lead-acid or 12.8V LiFePO4 starter battery – Easy troubleshooting from cranking to charging!
- For vehicles fitted with 12V AGM, GEL and STD lead-acid or 12.8V LFP / LiFePO4 starter battery.
- As easy as 1-2-3, connect to battery, check state of charge, start engine tester displays cranking voltage and vehicle charge voltage simultaneously – 15 sec is all you need!
- Display cranking volts down to 6V and charge voltage range up to 15V – Check weak battery or overcharging!
- Easy to use! Connect with the included clips to the battery or connect to an installed SAE battery lead.
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MSRP = Manufacturer Recommended Retail Pricing. Price in EURO and GBP include VAT of 20%. VAT in your region may differ. Price in USD and CAD do not include sales tax.

MSRP USD $39.90

MSRP CAD $60.49

MSRP EUR €39.90

MSRP GBP £37.99
Specifications
Easy to use! Connect clips to the battery or connect to an installed SAE battery lead, then:
- Check battery charge level. A low battery cranks (starts engine) poorly.
- Start engine. OptiMate TEST records and indicates (for 20 sec) the lowest start volts.
- With engine running, verify charging voltage from alternator and voltage regulator.
TIP: Low charge voltage causes poor battery performance. Too high charge voltage causes excessive gassing and will eventually damage a lead-acid battery. Too high charge voltage is FATAL for a LiFePO4 starter battery!
LENGTH: 40″/100cm
CHARGE CONNECTOR (INPUT): 2-pin SAE (+set batteryclips)
OPERATION: fully automatic
- State of charge result in GREEN / RED LED resuls, indication of lowest start Volts when engine starts (20 sec) and running voltage from alternator & voltage regulator.
CABLE RATING: SPT-2W 16 AWG (1.32mm2)
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
WARRANTY: 3-year limited replacement warranty