10 Best Auto Battery Testers | March 2017
We spent 25 hours on research, videography, and editing, to review the top choices for this wiki. Whether you are having difficulties with your auto or boat starting or you just like to preempt any problems, these car battery testers are capable of providing a complete charging system diagnosis, including testing the load, the starter motor draw and reporting the overall battery's health, so you know if it is near the end of its life. When users buy our independently chosen editorial picks, we may earn commissions to support our work. Skip to the best auto battery tester on Amazon.
The Noco BTE181 can test both engine cranking ability and starter motor performance. It's great at checking deep cycle batteries in solar applications, too. Unfortunately, it can't stand up to daily use and isn't suitable for commercial applications.
- draws very little power
- budget-friendly price
- at 4lbs it is heavy to hold
|Rating||4.0 / 5.0|
The Schumacher BT-100 boasts a shock resistant meter and well-insulated copper wires that safely conduct the testing load. It works well on boat batteries, too, and has a helpful color-coded display that DIYers can understand.
- provides a charge system diagnosis
- graphs for 12v and 6v testing
- doesn't always detect bad cells
|Rating||3.9 / 5.0|
The Actron CP7612 has a durable chrome-plated steel housing that is nearly impossible to bend. It comes with thorough and easy to understand instructions, and it has strong connection cables and clamps with tight jaws to ensure they won't wiggle loose.
- performs voltage and load tests
- backed by a one-year warranty
- gets hot while testing
|Rating||3.7 / 5.0|
The OTC 3181 Heavy Duty features an ergonomic design with a well-placed operating switch, can be used on both top and side posted batteries, and it features on-board clamp storage and has back brackets, so you can mount it on a wall.
- feels very well made
- extra large analog display
- cables are too short
|Rating||4.1 / 5.0|
The Cen-Tech Digital 66892 uses your car's battery for power, so you never have to worry about dead batteries in the unit preventing you from testing. It also has a slim grip and soft siding, allowing you to hold it with one hand while adjusting the clamps with the other.
- displays battery impedance
- comes with nearly 20-inch leads
- buttons don't always work
|Rating||4.4 / 5.0|
The Auto Meter SB-300 can detect issues like discharged batteries and bad cells and will also report a battery's health, so you know if it is near the end of its life and needs to be replaced. Conveniently, it also stores the last 100 test results in case you need them.
- produces a 40-amp test load
- also works on 6v systems
- very intuitive menu
|Rating||4.3 / 5.0|
The Clore Automotive Solar BA9 has been designed specifically to work with four battery types: flat plate and spiral wound AGM, gel cell and wet cell. It can produce accurate results as long as the batteries haven't been discharged below seven volts.
- reverse polarity protection
- for batteries up to 1200 cca
- step-by-step testing sequence
|Rating||4.1 / 5.0|
The Midtronics PBT300 boasts a wide measurement range from 100 to 1,400 cold cranking amps and delivers a test decision in seconds. It's a favorite among professional mechanics because you can use it on a daily basis without worrying about internal components breaking.
- checks alternator efficiency
- bright easy-to-read screen
- detects bad battery cells
|Rating||4.8 / 5.0|
The QuickyLynks BA101 can test the condition of charged and discharged batteries and display those results in six different languages. Also, it's very compact and weighs under a pound, so it's perfect to keep under a motorcycle seat or in a glove compartment.
- instructional dvd
- simple 4 button operation
- produces consistent results
|Rating||4.9 / 5.0|
The Clore Automotive Solar BA327 has a built-in printer that will produce a hard copy of your test results so there is no chance of you forgetting them. It also has an internal counter to track the number of tests performed and gives a unique code to each one.
- up to a 30 volt operating range
- suitable for multiple battery types
- cable ends can be replaced as needed
|Rating||5.0 / 5.0|