Purpose-built diagnostic tools for Tesla battery modules and full packs. Voltage monitoring, cell balancing, health reports — everything you need to test, repair, and refurbish Tesla battery systems.
Two tools for two jobs. The TBMM handles individual modules outside the car. The TPM scans complete battery packs — sealed or open.
A portable, single-purpose tool for checking Tesla Model S and X battery modules outside the car. Plugs directly into the stock BMB to read cell group voltages, temperatures, and imbalances. Now includes active balancing via the stock BMB with auto and manual modes.
A comprehensive scantool for diagnosing full Tesla battery packs — sealed or unsealed. Connects to Classic S/X and modern 3/Y/S/X packs to deliver a detailed health report. Comes in a rugged carrying case with all cables and its own battery.
Whether you're a salvage yard tech, a DIY builder, or running a battery repair shop, these tools pay for themselves on the first job.
Sort through stacks of modules at a dismantler. Quickly identify balanced, communicating modules worth pulling.
Open a pack and immediately see which modules are out of balance, have bad BMBs, or faulty cell groups.
Monitor Tesla modules repurposed for solar energy storage. Track voltage, balance, and health over WiFi.
Scan sealed or open packs for full health reports. Document condition with auto-generated reports for customers.
Decide which tool fits your workflow — or grab both for full-spectrum coverage.
| Feature | TBMM | TPM |
|---|---|---|
| Scope | Individual Modules | Full Battery Packs |
| Compatibility | Model S, Model X | S, X, 3, Y (All Gens) |
| Cell Voltages | ✓ | ✓ |
| Temperature | ✓ | ✓ |
| Imbalance Detection | ✓ | ✓ |
| Active Balancing | ✓ (Auto + Manual) | — |
| BMB Comm Check | ✓ | — |
| Multi-Module | Up to 62 | Full Pack |
| Serial / Part No. | — | ✓ |
| Mileage Estimate | — | ✓ |
| Auto Reports | — | ✓ |
| SMT Compatible | — | ✓ |
| WiFi Interface | ✓ | ✓ |
| Power Source | USB-C | Built-in Battery |
| Portability | Pocket-sized | Rugged Carry Case |
| Software Updates | OTA via Website | OTA via Website |
| Price | $140 | Contact for pricing |
Community reviews, video demos, and forum discussions from real users across the Tesla DIY ecosystem.
In-depth interview covering the design, capabilities, and real-world applications of the TBMM as a DIY battery repair tool.
Watch Video →Hands-on demonstration of testing BMBs on 2013 Tesla battery modules, including close-up use of the TBMM tool for diagnostics.
Watch Video →Demonstration of the TBMM monitoring two Tesla S modules in a solar storage setup, showing real-time voltage differences.
Watch Video →Real-world pack diagnosis at EV West on a Tesla S battery that threw faults and wouldn't charge.
Watch Video →Walkthrough of how to read and interpret the auto-generated health reports from the Tesla Pack Monitor.
Watch Video →Short-form overview of the TBMM as a troubleshooting tool for Tesla Model S/X battery modules.
Watch Short →Official marketplace listing and community discussion for the Tesla Battery Module Monitor on TMC forums.
Read Thread →Official marketplace listing and community discussion for the Tesla Pack Monitor scantool on TMC forums.
Read Thread →Community discussion and buyer feedback on the TBMM in the DIY Electric Car Forums marketplace.
Read Thread →Real feedback from battery builders, repair shops, and solar enthusiasts using our tools every day.
Grabbed a TBMM before heading to Pull-A-Part. Tested about 20 modules in an hour and found 3 perfectly balanced ones for my Powerwall project. Tool paid for itself on the first trip.
The TPM identified a bad cell group in a 2018 Model 3 pack that we couldn't locate with any other tool. The auto-generated report made it easy to show the customer exactly what needed repair.
We use the TBMM daily in our refurb operation. Being able to monitor up to 62 modules and run auto-balancing has cut our turnaround time significantly. The WiFi interface is a great touch.
Shipped to Germany in about a week. Works flawlessly with my Model S modules. The balancing feature alone makes this worth every penny. Kevin was super responsive with questions too.
The TPM gave us serial numbers and mileage estimates on a stack of mystery packs with missing labels. That alone saved us hours of research and guesswork.
Been monitoring my two Tesla modules in my off-grid solar setup via WiFi. The TBMM lets me check balance remotely without going to the battery shed. Simple, reliable, well-made.
Grabbed a TBMM before heading to Pull-A-Part. Tested about 20 modules in an hour and found 3 perfectly balanced ones for my Powerwall project. Tool paid for itself on the first trip.
The TPM identified a bad cell group in a 2018 Model 3 pack that we couldn't locate with any other tool. The auto-generated report made it easy to show the customer exactly what needed repair.
We use the TBMM daily in our refurb operation. Being able to monitor up to 62 modules and run auto-balancing has cut our turnaround time significantly. The WiFi interface is a great touch.
Shipped to Germany in about a week. Works flawlessly with my Model S modules. The balancing feature alone makes this worth every penny. Kevin was super responsive with questions too.
The TPM gave us serial numbers and mileage estimates on a stack of mystery packs with missing labels. That alone saved us hours of research and guesswork.
Been monitoring my two Tesla modules in my off-grid solar setup via WiFi. The TBMM lets me check balance remotely without going to the battery shed. Simple, reliable, well-made.
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