Konnwei KW700
#1 in With printerFull review
The lowest-priced tester here with a printer, and it handles lithium and 24 V batteries too.
Amazon $59.99$59.99
The Konnwei KW700 is the better car battery tester overall, rated 4.1 to 3.4. The Konnwei KW700 leads on price and features or load. The Konnwei KW700 costs $160 less ($59.99 vs $219.99).
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 BT780
#5 in With printerFull review
A shop tester that keeps working on a nearly flat battery and prints branded reports.
Amazon $219.99$219.99
Which should you buy?
- Choose the Konnwei KW700 for price ($59.99 vs $219.99) and features or load (built-in printer, color or phone screen, lithium battery testing, app or QR report vs built-in printer, own battery, cable of 5 ft or more).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every with printer car battery tester; a clear win is highlighted. How we rank explains each one.
| Factor weight | Konnwei KW700 | Foxwell BT780 |
|---|---|---|
| Overall rating | 4.1/5 | 3.4/5 |
| Price 25% | 92 $59.99 | 36 $219.99 |
| Battery coverage 25% | 80 up to 2,000 CCA, 24 V systems | 80 up to 2,000 CCA, 24 V systems |
| System tests 20% | 80 tests the starter, charging system | 80 tests the starter, charging system |
| Features or load 20% | 70 built-in printer, color or phone screen, lithium battery testing, app or QR report | 45 built-in printer, own battery, cable of 5 ft or more |
| Warranty 10% | 0 warranty not published, scored as none | 0 warranty not published, scored as none |
Specifications
| Konnwei KW700 | Foxwell BT780 | |
|---|---|---|
| Testing | ||
| Type | Conductance (digital) | Conductance (digital) |
| Battery voltages | 12/24 V | - |
| System voltages | 12/24 V | 12/24 V |
| Rating range | 10-2,000 CCA | 100-2,000 CCA |
| Battery types | Flooded, AGM, gel, EFB, lithium | Flooded, AGM flat plate, AGM spiral, EFB, gel, start-stop |
| Lithium batteries | Yes | No |
| Rating standards | - | CCA, CA, MCA, JIS, DIN, IEC, EN, SAE |
| Starter test | Yes | Yes |
| Charging system test | Yes | Yes |
| Features | ||
| Display | 2.8 in color LCD | 3.2 in LCD |
| Built-in printer | Yes | Yes |
| App or QR report | Yes | - |
| Own battery | - | Yes |
| Cable length | - | 6.5 ft |