TECMATE - TS-121 - Battery Charging System/Alternator Tester
The TECMATE TS-121 is a pocket-sized battery and alternator tester for 12V lead-acid and 12.8V LiFePO4 batteries, checking voltage, starting power, and charging system output without disassembly—displaying cranking and charge voltage simultaneously to detect weak batteries or overcharging, with removable battery clips and mounting accessories.
Features
- The ultimate pocket tester for on-vehicle performance & alternator voltage testing with either 12V lead-acid or 12.8 V LiFePO4 starter battery - easy troubleshooting from cranking to charging
- Checks battery voltage to provide an indication of battery health; checks battery starting power and checks charging system without disassembly by indicating low charging voltage
- As easy as 1-2-3, connect to battery, check state of charge, start engine tester displays cranking voltage and vehicle charge simultaneously - 15 seconds is all you need
- Includes two cable straps, adhesive hook-and-loop straps and screws for use if mounting the removable backplate into an enclosure
- Display cranking volts down to 6 V and charge voltage range up to 15 V - check weak battery or overcharging
- Easy to use! Connect with the included clips to the battery or connect to an installed SAE battery lead
- Battery clips are removable and replaceable
Specs
- Product Name: Battery Tester
- Color/Finish: Black
- Units: Each
- Riding Style: Street
Frequently Asked Questions - TECMATE - TS-121 - Battery Charging System/Alternator Tester
How do I know if this part fits my vehicle?
Check the fitment information listed on this page against your exact year, make, model, and (where applicable) trim, engine size, or configuration. If your exact vehicle isn't listed, or you're not sure, use the product chat on this page or contact our support team before ordering - we're glad to help confirm fitment.
What does it mean if a product is listed as universal fit?
Universal fit means the product is designed to work across a range of vehicles, not that it's guaranteed to fit every one. Compare the listed measurements, mounting requirements, and connector or hardware specs against your specific vehicle before ordering, since some installations may need additional hardware or minor fabrication.
Where can I find installation instructions for this product?
General installation notes are provided above where available. For detailed step-by-step instructions, refer to the manufacturer's documentation included with the product, or use the product chat on this page for questions about difficulty, required tools, or whether professional installation is recommended.
What if I have more questions about this product?
Use the product chat on this page for fitment, specs, installation, and compatibility questions, or contact our support team directly for help before you order.
