Your Browsing History
Meet Your Seller
Optimate Test Cranking & Alternator, TS-121, 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!
+
+
Overview
Reviews
Any questions? Our AI beta will help you find out quickly.
Try me now
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.; Verifies charging voltage when engine is running.
The ultimate pocket tester for on-vehicle battery performance & alternator voltage testing that every service technician or gear head should have! Easy to use! Connect clips to the battery or connect to an installed SAE battery lead, then: 1. Check battery charge level. A low battery cranks (starts engine) poorly. 2. Start engine. OptiMate TEST records and indicates (for 20 sec) the lowest start volts. 3. 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! A premium tester designed by. 3-year limited replacement.
Easy to use! Connect with the included clips to the battery or connect to an installed SAE battery lead.; Verifies charging voltage when engine is running.
The ultimate pocket tester for on-vehicle battery performance & alternator voltage testing that every service technician or gear head should have! Easy to use! Connect clips to the battery or connect to an installed SAE battery lead, then: 1. Check battery charge level. A low battery cranks (starts engine) poorly. 2. Start engine. OptiMate TEST records and indicates (for 20 sec) the lowest start volts. 3. 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! A premium tester designed by. 3-year limited replacement.
Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
- Please contact the Seller directly for warranty information. Warranty information may also be found on the Manufacturer's website.
- CONTACT
Return Policies
- Return for refund within: 30 days
- Return for replacement within: 30 days
- This item is covered by Grandwood Tech Limited Return Policy
Manufacturer Contact Info
- For a directory of all our manufacturers, please click below.
- Manufacturers Directory
LOADING...







