Product Description
Choose the TECMATE TESTER CRANK / ALT TS-121 from Knobtown Cycle, Kansas City’s go-to shop for motorcycle parts.
Key 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
Product Specifications
- Part Number: 38070245
- Brand: TECMATE
- Weight: 0.35 lbs
- UPC: 5425006141864
Available at Knobtown Cycle
Shop online or visit our Kansas City showroom. Fast shipping available on all orders! Free Ship to Store!
Part Locations
| Location |
Available |
| Wisconsin (WI) |
12 |
| New York (NY) |
0 |
| Texas (TX) |
0 |
| Nevada (NV) |
0 |
| North Carolina (NC) |
2 |
| National Total |
14 |
Stock levels last updated: January 30, 2026 8:09 PM
Professional Installation Available
Knobtown Cycle offers professional installation services. Contact us via a service request to learn more.
Thank you for Shopping at Knobtown Cycle!
When you shop with us, you’re not just buying motorcycle parts — you’re supporting a small, family-run business rooted right here in the heartland of America. Every order helps us keep riders on the road and fuels our passion for serving the motorcycle community.
From all of us at Knobtown Cycle, thank you for choosing local and riding with us.
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