Trucks, buses and heavy equipment often run two 12 V batteries in series for a 24 V system. Most testers listed here test each 12 V battery on its own and then check the 24 V starter and charging system as a whole; a few also test a 24 V battery directly. Check which one the tester’s specs list before you rely on it for a fleet.
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.
Best Battery Testers for 24 V Trucks: Digital testers
- Autel MaxiBAS BT506#1 of 3Full review
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$175Conductance (digital)100-2,000 CCA12/24 V - Topdon BT200#2 of 3Full review
A step up from the BT100 for anyone who also works on 24 V trucks or equipment, with a sunlight-readable color screen.
Amazon $77.99$77.99Conductance (digital)100-2,000 CCA12/24 V - Foxwell BT705#3 of 3Full review
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$106.99Conductance (digital)100-2,000 CCA12/24 V
Best Battery Testers for 24 V Trucks: With printer
- Konnwei KW700#1 of 7Full review
The lowest-priced tester here with a printer, and it handles lithium and 24 V batteries too.
Amazon $59.99$59.99Conductance (digital)10-2,000 CCA12/24 V - Topdon BT300P#2 of 7Full review
The cheapest way to get printed battery results, for a small shop or a mobile mechanic.
Amazon $99.99$99.99Conductance (digital)100-2,000 CCA12/24 V - Topdon BT600#3 of 7Full review
A shop-friendly tester with a big screen and a printer, for 12 V batteries and 24 V truck systems.
Amazon $169.99$169.99Conductance (digital)100-2,000 CCA12/24 V - Ancel BST600#4 of 7Full review
A printer tester for shops and fleets that work on 24 V batteries and want a dated paper record for each job.
Amazon $119.99$119.99Conductance (digital)100-2,000 CCA12/24 V - Foxwell BT780#5 of 7Full review
A shop tester that keeps working on a nearly flat battery and prints branded reports.
Amazon $219.99$219.99Conductance (digital)100-2,000 CCA12/24 V - Autel MaxiBAS BT608#6 of 7Full review
A combined battery tester and scan tool for a shop that wants printed reports and code reading in one tablet.
Amazon $449$449Conductance (digital)100-3,000 CCA12/24 V - Clore Solar BA327#7 of 7Full review
A heavy-duty Solar printer tester for shops that see everything from 6 V tractors to 24 V trucks.
Amazon $341.21$341.21Conductance (digital)up to 2,000 CCA6/12/24 V
Best Battery Testers for 24 V Trucks: Load testers
- Clore Solar 1876 1000 Amp#1 of 1Full review
A full-size carbon-pile tester for shops and fleets that load-test heavy-duty and 24 V batteries.
Amazon $284.84$284.84Carbon pileup to 2,000 CCA6/12/24 V
