Under $100 buys a digital tester that reads a 2,000 CCA battery and checks the starter and alternator, and in a couple of cases adds a built-in printer. It also buys a simple fixed-load tester. For checking the family’s cars a couple of times a year, there is little reason to spend more.
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 Car Battery Testers Under $100: Digital testers
- Ancel BA101 Plus#1 of 5Full review
A good fit for a garage with motorcycles, mowers and cars, since it tests 6 V and 12 V batteries and keeps a long test history.
Amazon $69.99$69.99Conductance (digital)20-2,000 CCA6/12 V - Topdon BT200#2 of 5Full 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 - Topdon BT100#3 of 5Full review
A low-cost 12 V tester for a car owner who wants to check a battery, starter and alternator at home.
Amazon $53.99$53.99Conductance (digital)100-2,000 CCA12 V - Foxwell BT301#4 of 5Full review
A simple 12 V tester for home garages, with a long cable for running the starter test without a helper.
Amazon $69.99$69.99Conductance (digital)100-2,000 CCA12 V - Clore Solar BA9#5 of 5Full review
A basic, low-cost 12 V tester from the maker of the Solar shop line, for cars with ordinary batteries.
Amazon $60.92$60.92Conductance (digital)40-1,200 CCA12 V
Best Car Battery Testers Under $100: With printer
- Konnwei KW700#1 of 2Full 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 2Full 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
Best Car Battery Testers Under $100: Load testers
- Schumacher BT-100#1 of 2Full review
A classic, low-cost load tester for checking 6 V and 12 V batteries under a real load.
Amazon $54.99$54.99Fixed load-6/12 V - OTC 3181 130 Amp#2 of 2Full review
A rugged fixed-load tester for quick pass or fail checks on 6 V and 12 V batteries, including side-post ones.
Amazon $89.37$89.37Fixed load--
