Autel MaxiBAS BT506
A good add-on for a shop that already uses Autel wireless scan tools, or anyone who wants test reports on a phone.
Amazon $175$175
The Autel MaxiBAS BT506 is the better car battery tester overall, rated 3.8 to 3.6. The Autel MaxiBAS BT506 leads on features or load, battery coverage and system tests. The Foxwell BT705 wins on price and warranty. The Foxwell BT705 costs $68.01 less ($106.99 vs $175).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
Foxwell BT705
A sturdy 12 V and 24 V tester with a cable long enough to run the starter test alone, and a longer warranty than most.
Amazon $106.99$106.99
Which should you buy?
- Choose the Autel MaxiBAS BT506 for features or load (color or phone screen, app or QR report, stored results vs cable of 5 ft or more), battery coverage (up to 2,000 CCA, 6 V batteries, 24 V systems vs up to 2,000 CCA, 24 V systems) and system tests (tests the starter, charging system, ripple or diode vs tests the starter, charging system).
- Choose the Foxwell BT705 for price ($106.99 vs $175) and warranty (2-year warranty vs 1-year warranty).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every digital testers car battery tester; a clear win is highlighted. How we rank explains each one.
| Factor weight | Autel MaxiBAS BT506 | Foxwell BT705 |
|---|---|---|
| Overall rating | 3.8/5 | 3.6/5 |
| Price 25% | 46 $175 | 67 $106.99 |
| Battery coverage 25% | 100 up to 2,000 CCA, 6 V batteries, 24 V systems | 80 up to 2,000 CCA, 24 V systems |
| System tests 20% | 100 tests the starter, charging system, ripple or diode | 80 tests the starter, charging system |
| Features or load 20% | 40 color or phone screen, app or QR report, stored results | 10 cable of 5 ft or more |
| Warranty 10% | 0 1-year warranty | 50 2-year warranty |
Specifications
| Autel MaxiBAS BT506 | Foxwell BT705 | |
|---|---|---|
| Testing | ||
| Type | Conductance (digital) | Conductance (digital) |
| Battery voltages | 6/12 V | 12/24 V |
| System voltages | 12/24 V | 12/24 V |
| Rating range | 100-2,000 CCA | 100-2,000 CCA |
| Battery types | Flooded, AGM, AGM spiral, EFB, gel | Flooded, AGM, gel, EFB |
| Lithium batteries | - | No |
| Rating standards | CCA, SAE, CA, EN, IEC, DIN, JIS, MCA | - |
| Starter test | Yes | Yes |
| Charging system test | Yes | Yes |
| Ripple or diode test | Yes | - |
| Features | ||
| Display | Phone app | 2.8 in screen |
| App or QR report | Yes | - |
| Stores results | Yes | - |
| Cable length | - | 5.9 ft |
| Build | ||
| Warranty | 1 year | 2 years |