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Choosing between the TOPDON BT600 Plus and the OBDMATE BT770 comes down to how deep you want to go with battery diagnostics. The TOPDON covers 6V, 12V and 24V batteries with 99.8% accuracy, while the OBDMATE BT770 sticks to 12V and 24V but handles 100-2000CCA and prints reports with one tap.
This comparison is for car owners, home mechanics and DIYers who want a battery tester with a built-in printer without overpaying. The trade-off is simple: more test types and a bigger screen versus a lighter, cheaper unit. Here’s which one I’d actually buy.
🏆 Quick Picks — My Top Recommendations
Best Overall: TOPDON BT600 Plus
99.8% accuracy and 6V/12V/24V coverage with a 3.5-inch screen — Check Price →
Runner-Up: OBDMATE BT770
100-2000CCA range and one-tap thermal printing in a 2.46-pound package — Check Price →
Here’s how the TOPDON BT600 Plus and the OBDMATE BT770 stack up side by side on the specs that actually matter when you’re testing a battery.
Full Specs Comparison
| Specification | TOPDON BT600 Plus Car Bat | OBDMATE 12V/24V Battery T |
|---|---|---|
| Supported Voltages | 6V/12V/24V | ✅ 12V/24V |
| Battery Types | — | ✅ Flooded, AGM, Gel, EFB |
| CCA Range | — | ✅ 100-2000CCA |
| Display Size | ✅ 3.5-Inch | — |
| Display Type | — | — |
| Built-in Printer | ✅ Yes | ✅ Yes |
| Printer Type | — | ✅ Thermal |
| Power Source | Battery Powered | Corded Electric |
| Item Weight | ✅ 4.44 pounds | 2.46 pounds |
| Color | Black Grey | Yellow |
| Brand | TOPDON | OBDMATE |
| Style | ✅ BT600 PLUS | New |
| Cranking Test | ✅ Yes | ✅ Yes |
| Charging Test | ✅ Yes | ✅ Yes |
| System Test | ✅ Yes | — |
| Resistance Test | ✅ Yes | — |
The biggest gap for me is voltage coverage: the TOPDON handles 6V, 12V and 24V batteries while the OBDMATE BT770 only goes down to 12V.
Individual Product Breakdown
I looked at voltage coverage, accuracy claims, screen size, battery type support, and how each unit handles printing reports in the field. Both have built-in printers, but they’re built for pretty different buyers.
TOPDON BT600 Plus Car Battery Tester
6V/12V/24V | 99.8% Accuracy | 3.5-Inch Screen | 5200mAh Battery | 4.44 lbs
- 2-in-1 Battery & Resistance Tester: TOPDON BT600 Plus battery load tester...
- 99.8% High Accuracy: Tested in rigorous lab simulations, the BT600 Plus car...
- One device covers all your testing needs: The 12V/24V system test runs...
This is the tester I’d grab if I work on more than just my own car. It runs 6V, 12V and 24V tests, adds resistance and sequence testing, and the 5200mAh battery gives up to 14 hours of standalone operation. The built-in thermal printer spits out professional reports instantly, and the 3.5-inch HD color screen is easy to read in a garage. The main catch is the 4.44-pound weight and the fact that it’s aimed at pros who’ll actually use the extra test modes.
✅ Pros
- 99.8% accuracy backed by upgraded algorithms
- Tests 6V, 12V and 24V batteries plus resistance and sequence modes
- Up to 14 hours of standalone use from the 5200mAh battery
- Sequence test handles up to 5,000 batteries in one go
❌ Cons
- Heavy at 4.44 pounds for a handheld tester
- Only saves 10 records per test type
- More tester than most casual car owners need
OBDMATE BT770 Battery Load Tester with Printer
12V/24V | 100-2000CCA | 2.8-Inch LCD | Thermal Printer | 2.46 lbs
- 【Battery Tester for 12/24V Batteries】 BT770 Car battery tester works...
- 【One-click Battery Health Reports Printing】 Built-in thermal printer...
- 【Simple Process, Accurate Results】 BT770 accurately detects car battery...
For a casual car owner, this is the smarter pick. It covers 12V and 24V batteries from 100 to 2000CCA, including regular flooded, AGM flat plate, AGM spiral, Gel and EFB, and the one-tap thermal printer makes quick work of cranking and charging reports. At 2.46 pounds with a carrying case and 31.5-inch copper clamps, it’s genuinely easy to toss in a trunk. The 2.8-inch color screen is smaller than the TOPDON’s, and it won’t test 6V batteries at all.
✅ Pros
- Wide 100-2000CCA range for cars, trucks and boats
- Supports flooded, AGM flat plate, AGM spiral, Gel and EFB
- Light at 2.46 pounds with a hard carry case included
- Reverse polarity, leakage and overload protection built in
❌ Cons
- No 6V battery testing
- Smaller 2.8-inch screen than the TOPDON’s 3.5-inch
- Corded electric power, so no standalone battery mode
Which One Should You Buy?
The right pick really comes down to what you work on and how often you test batteries. I’d split these two by buyer type rather than by raw performance, because both do their core job well.
TOPDON BT600 Plus Car Battery Tester is right for you if…
- You work on 6V batteries too, like golf carts, motorcycles or older equipment the 12V/24V-only OBDMATE can’t touch
- You test in bulk and want the sequence mode that handles up to 5,000 batteries in one run
- You need up to 14 hours of standalone testing away from an outlet, thanks to the 5200mAh battery
OBDMATE BT770 Battery Load Tester with Printer is right for you if…
- You only deal with 12V and 24V vehicles and want the full 100-2000CCA range covered
- You want a light 2.46-pound tester with a hard carry case that lives in your trunk or toolbox
- You test flooded, AGM flat plate, AGM spiral, Gel or EFB batteries and want one-tap printed reports
❌ Who Should Skip All of These?
If you just want a quick voltage read on one car battery once a year, a basic multimeter or a simple plug-in voltage checker will do the job for a fraction of the bulk. Neither of these is worth it unless you actually want printed health reports and CCA testing.
For most car owners, I’d go with the OBDMATE BT770 — it’s lighter, covers the 12V/24V batteries you’ll realistically test, and the one-tap printer is genuinely handy. Step up to the TOPDON BT600 Plus only if you need 6V support, bulk sequence testing, or the bigger 3.5-inch screen.
Frequently Asked Questions
Which is better for testing 12V car batteries, the TOPDON BT600 Plus or the OBDMATE BT770?
For plain 12V car batteries, both will get the job done, but they get there differently. The OBDMATE BT770 covers 100-2000CCA across flooded, AGM flat plate, AGM spiral, Gel and EFB, which is more than enough for any normal car battery. The TOPDON BT600 Plus adds 99.8% accuracy and a 3.5-inch screen, but for a standard 12V test you won’t notice the difference. I’d pick the OBDMATE for a single car and the TOPDON if you’re testing a lot of batteries.
Is the TOPDON BT600 Plus worth the extra money over the OBDMATE BT770?
Only if you use the features the OBDMATE doesn’t have. The TOPDON tests 6V batteries, runs a sequence test on up to 5,000 units at once, and gives you up to 14 hours of standalone operation from its 5200mAh battery. If none of that matters to you, you’re paying extra for a bigger screen and a heavier 4.44-pound body. For most car owners, the OBDMATE is the better value.
Does the OBDMATE BT770 test 6V batteries?
No, and that’s the clearest split between these two. The OBDMATE BT770 only handles 12V and 24V batteries. The TOPDON BT600 Plus goes down to 6V and can even test batteries as low as 2V. So if you own a golf cart, a classic 6V setup, or older equipment, the TOPDON is the only one of the two that works.
Which battery tester is more portable, the BT770 or the BT600 Plus?
The OBDMATE BT770 wins this one easily at 2.46 pounds versus the TOPDON’s 4.44 pounds. The OBDMATE also comes with a hard carry case and 31.5-inch copper clamps, so it’s simple to keep in a trunk or toolbox. The TOPDON is the heavier, more bench-oriented unit. If you want something you can grab and go, go with the OBDMATE.
Do both testers print battery health reports?
Yes, both have built-in thermal printers, which is the main reason to buy either one. The OBDMATE BT770 prints with one tap during cranking, charging and battery tests. The TOPDON BT600 Plus also prints instantly and includes 5 rolls of thermal paper in the box, versus 2 rolls with the OBDMATE. Either way, you get a paper report without hooking up to a computer.
Can the OBDMATE BT770 test trucks and boats too?
Yes, and that’s one of its strengths. The BT770 works with 12V and 24V vehicles including cars, trucks, motorcycles, golf carts, lawn mowers, boats, yachts, water scooters, RVs, ATVs and SUVs, with a 100-2000CCA range. The TOPDON BT600 Plus also covers 12V and 24V cranking and charging tests, so both handle big batteries. The real difference is still the TOPDON’s extra 6V support and bulk sequence mode.
My Final Verdict
After weighing everything, I’m giving the win to the TOPDON BT600 Plus. The 99.8% accuracy, 6V/12V/24V coverage, and up to 14 hours of standalone runtime from the 5200mAh battery make it the more capable tool for anyone who tests regularly. The OBDMATE BT770 is the better pick for casual car owners — it’s lighter at 2.46 pounds and still covers the full 100-2000CCA range with one-tap printing.
If you’re on the fence, ask yourself one question: do you ever test a 6V battery or run through multiple batteries at once? If yes, the TOPDON earns its keep. If you just want reliable 12V/24V reports from something you can toss in the trunk, save the money and get the OBDMATE.
WINNER: TOPDON BT600 Plus
- 2-in-1 Battery & Resistance Tester: TOPDON BT600 Plus battery load tester...
- 99.8% High Accuracy: Tested in rigorous lab simulations, the BT600 Plus car...
- One device covers all your testing needs: The 12V/24V system test runs...
Best for pros and home mechanics who need 6V support, 99.8% accuracy, and bulk sequence testing. The 3.5-inch screen and 14-hour runtime make it the more complete tester.
RUNNER-UP: OBDMATE BT770
- 【Battery Tester for 12/24V Batteries】 BT770 Car battery tester works...
- 【One-click Battery Health Reports Printing】 Built-in thermal printer...
- 【Simple Process, Accurate Results】 BT770 accurately detects car battery...
Best for everyday car owners who want 12V/24V testing, a 100-2000CCA range, and one-tap thermal printing in a light 2.46-pound package with a carry case.
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