Best Solar Battery Testers – Top Reviews for 2021

The best solar battery testers can tell you how much juice is left in an accumulator, but also whether the latter is too worn out to maintain. In the case of EVs and especially during the winter, it’s essential to ensure that the car battery is still healthy before fastening your seatbelt for a long drive.

Whether you own an electric vehicle, a residential solar power system, or any appliance that runs on solar electricity, keeping tabs on the health of your rechargeable batteries is a must. Over the years, knowing whether your batteries need maintenance or replacement can save you thousands of dollars, which is where a solar battery tester comes in.

SOLAR BA7 100-1200 CCA Electronic Battery and System Tester

Schumacher BT-100 100A Battery Load Tester and Voltmeter

SUNER POWER Digital 12V Car Battery Tester

What Are the Best Solar Battery Testers in 2020?

Solar battery testing is still in its infancy and most products (like these solar power banks) available on the market are not able to properly assess the condition of an accumulator due to imprecise measurements. For your convenience, we’ve chosen only testers of the highest caliber that you can trust, so you’ll be able to test your solar light batteries, for example, with ease.

SOLAR BA7 100-1200 CCA Electronic Battery and System Tester

Editor's Pick

The BA7 Solar battery tester from Clore Automotive strikes the perfect balance between versatility, reliability, and cost, which is why we rank it first on our list. Although it does not offer extensive testing, it is more than sufficient to assess the condition of a solar battery with ease.

In addition, this solar conductance tester is compatible with multiple types of 12V accumulators rated between 100 and 1200 CCA, with an operating range of 7-15V. It works for conventional batteries, but also for AGM, Spiral Wound, Gel Cell, and Deep Cycle accumulators. When used, it can assess not only the condition of the battery itself, but also that of the starting and charging system for additional information.

Finally, the BA7 Solar battery tester comes with a 4-digit LED screen with 2 brightness settings and is very easy to use even if you have no prior experience with similar devices. The handheld tester guides you every step of the way and even offers pointers as to how you should interpret the results.


  • An affordable, well-rounded solar battery tester
  • Highly versatile; can test virtually any type of 12V battery, including conventional lead acid, Gel Cell, AGM, spiral wound, and deep cycle accumulators
  • Provides information about the battery, as well as the starting and charging systems. Works with numbers and a Pass/Fail qualification
  • User-friendly; requires no previous experience to be used


  • The LED screen may be difficult to read outdoors, when the sun is very bright

SOLAR BA327 20-2000 CCA Electronic Battery and System Tester with Printer

The BA327 Solar battery tester is the solution provided by Clore Automotive for professional mechanics who test accumulators on a regular basis and also need/want to issue service documentation for each assessment. This product is significantly more expensive than other options presented here, but it is, by far, the most reliable as well.

This solar conductance tester can be used with 6V and 12V accumulators that are rated between 40 and 2000 CCA, with an operating range of 1.5-30V. Using this gadget, you can evaluate the condition of most types of batteries, from lead acid car batteries to spiral wound, AGM, Gel Cell, and deep cycle accumulators. The tester provides information for both charged and discharged batteries and can perform its evaluation quickly and accurately. The operator is prompted for any necessary details during testing and is guided through the entire process.

The built-in printer can be used to issue service documentation for each test, while its internal counter keeps track of all performed assessments in order to provide a unique warranty code. The extra-long cable leads are a convenient way to connect the device to any battery, while the backlit LED screen ensures good visibility in both dark and bright environments.


  • Professional and versatile solar battery tester
  • Can test most types of batteries, both 6V and 12V, as well as charged and discharged
  • Extra-long cable leads and user-friendly LED display with backlight
  • Built-in printer for service documentation and internal counter for unique warranty codes


  • Significantly more expensive than other options

Schumacher BT-100 100A Battery Load Tester and Voltmeter

Most Popular

The Schumacher BT-100 is one of the best solar battery testers you can get for an affordable price. Although it features an analog, rather than digital display, once you become accustomed to its measurements, you learn to appreciate its reliability across numerous tests.

You can use this solar conductance tester to assess 6V and 12V accumulators rated up to 1000 CCA, which includes deep cycle and most other battery types. The device is an integrated tester and voltmeter, so it can offer accurate readings of the accumulator’s health, its load (100A for 12V or 50A for 6V), the starter motor draw, and the charging system. Overall, it offers a comprehensive picture of the entire battery system, which can come particularly in-handy with cars, RVs, boats, motorcycles, and any other vehicles with a conventional lead or electric battery.

Furthermore, the Schumacher BT-100 has a baked enamel, steel case and a durable build that can last through consistent wear and tear. The included heavy-duty, super-grip battery clamps are color-coded to help avoid any unwanted accidents, while the rocker switch mounted on top of the device makes it very easy to use.


  • One of the most reliable and overall best solar battery testers for this price
  • Can test both 6V and 12V batteries of up to 1000 CCA
  • Will assess both the battery and the entire charging system
  • Heavy-duty build, including a baked enamel, steel case and super-grip, color-coded battery clamps


  • Does not feature a digital, LED display

Battery Tester FOXWELL BT705

The Foxwell BT705 is viewed by many reviewers as one of the best solar battery testers currently on the market. This is mainly because, unlike many other devices, it boasts a flawless reputation when it comes to the accuracy of its results. This battery tester takes our top pick for electric vehicles precisely because it can be relied upon to help, rather than hinder the assessment of your car.

The BT705 is an advanced solar conductance tester equipped with top quality copper clips and wire to maintain a stable connection to the battery throughout the assessment. In a matter of seconds, it can accurately determine how healthy the battery is, measure its actual CCA, as well as determine the reliability of the car’s starting battery. These results are displayed on a user-friendly LCD screen, together with information about the charging system, charging current, and rectifier diode.

The included 7.8ft of tester cable with heavy-duty alligator clips allows you to diagnose the car while sitting inside the vehicle, which can be particularly useful during cold winters. The device can be connected to a printer via Bluetooth so that you can print test results with ease. Meanwhile, the menu is highly intuitive and can guide you through the testing process, while the backlight on the LCD display ensures clear visibility in all environments.


  • Currently the best solar battery testers for cars and electric vehicles
  • Advanced solar conductance tester that delivers accurate results in a timely manner
  • Can be connected to 12V and 24V batteries and solar power systems
  • User-friendly display with backlight for clear visibility


  • Slightly more expensive than other options

SUNER POWER Digital 12V Car Battery Tester

Best Value

The solar conductance tester by Suner Power is more affordable than all other gadgets mentioned here, but it still comes with enough features to keep it in this top 5. Its compatibility ranges across most types of battery, including flood, AGM, gel cell, and deep cycle accumulators rated between 5 and 9555 CCA, with an operating range of 7-15V.

Suner Power’s solar battery tester accurately measures parameters that can offer a complete picture of the battery’s condition. Included in its appraisal are the battery load system, the actual CCA, its life percentage, as well as its voltage and its resistance to unexpected shutdowns. The device’s large LED screen is easy to read and intuitive to operate. In addition, it includes a grading system that can help you interpret results without any previous experience with similar devices.

Several features of this solar battery tester are designed to ensure that the device is perfectly safe to use. The heavy-duty clips, the reminder alarm, but also the its reverse polarity and over voltage protection make it so that the tester can endure frequent use without causing any damage to your batteries.


  • A more affordable solar conductance tester with plenty of useful features
  • Compatible with most types of batteries rated between 5 and 9555 CCA, charged or discharged
  • Large and intuitive LED display that includes several grids to help you interpret results
  • Safety features include heavy-duty clips, a reminder alarm, and protection against reverse polarity and over voltage


  • Readings are not as reliable as with other testers described here

How Does a Solar Conductance Tester Work?

Most batteries, either for electric vehicles or outdoor solar lights, don’t come with a built-in meter that assesses their remaining lifespan. As such, when something stops working, it can be difficult to tell whether the battery is at fault. To avoid unnecessary costs and to know precisely when a solar battery must be replaced, you can use a solar conductance tester.

The best solar battery testers feature a conductive medium that, when connected properly to an accumulator, elicits the production of electricity. Basically, the tester verifies whether the battery still releases any current and, if so, it measures how much. More sophisticated testing methods have been developed recently to allow for more accurate readings, but regardless of the device, this is the basic working principle.

There are several reasons why it’s important to test your solar batteries when you think something might be wrong with your EV or home appliance. (To avoid something going wrong in the first place, consider springing for a solar charge controller.) For one, you can save a lot of money if you know exactly when a rechargeable solar battery is too degraded to function properly because this can help you avoid buying new accumulators more frequently than needed. More importantly, in the case of EVs, for instance, running a diagnostic on the car’s battery prior to a long trip can save you from a roadside automotive failure about 40% of the time.

Before You Buy a Solar Battery Tester

Before You Buy a Solar Battery Tester

The products we’ve presented above are some of the best solar battery testers currently on the market, which means that by buying one of them, you can have the certainty of an accurate read. However, if you can’t find something you like here, then there are a few things you should bear in mind as you search for a more suitable gadget. Keep in mind that they go great with devices like these solar car battery chargers.

Size, Weight, and Durability

Most solar battery testers are handheld devices that should be compact and lightweight for optimal use. In addition, like with solar phone chargers, the best testers come with a heavy-duty build that can withstand repeated and frequent use, as well as with fairly long, insulated cables and clips.

Tested Battery Types

Not all solar conductance testers are made the same. Most are only compatible with 12V batteries, while others can also work with 6V or 24V accumulators. Moreover, it’s important to know your specific battery type or to choose a gadget that can assess anything from lead acid batteries to Gel Cell, AGM, spiral wound, and deep cycle accumulators.

System Diagnosis

Some battery testers can also give you information about different adjacent parts of the solar power system or EV engine. For instance, you might be able to determine whether the starting and charging components are in order, which can further help you determine the cause of any malfunction in the system.


While professional mechanics will likely have no trouble reading a solar conductance tester, this is not necessarily the case with people who use these devices for the first time. If you have no previous experience assessing a battery, you could look for a tester with a digital, LED display and plenty of built-in guidelines.

These pointers sum up everything you need to know in order to buy the best solar battery tester for you specific needs. If you’re looking for a device that is guaranteed to work well, we recommend one of the items on our list of five. Otherwise, feel free to explore other options, but don’t forget to consider them carefully against the guidelines mentioned above.

Rated 4.6 out of 5
Based on 29 reviews

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