20 Best Battery Tester For Small Batteries (2022 Updated)

This battery tester is very easy to use. After receiving it, I was able to test over 200 old batteries in about 15 minutes and discard the expired batteries. Saved a lot of space that was storing batteries, took away guesswork as to whether batteries were good or not, and saved me a lot of time.

This tester is well worth the price.

My used batteries were piling up, the expired and good ones all mixed up together. This tester helped me sort them out.

It works as it says it will. You really have to look to see it is in the green which means the battery is good. The meter is a lot larger in the red area for a battery not working. Other than that it works well is small in size for a pocket, purse or any place to store it.

This is the current version of the Tenergy battery tester I’ve been using for several years. The old one still works so I’m keeping it around. Only reason for replacing the old with the new is part of the liquid crystal display quit working.

It’ll still show a battery with a full charge but the middle range won’t light up. Even with that I still like the tester good enough to order the same model as a replacement. Was glad to find it still stocked by Battery Mart.

That should tell you something.

I wish I could recommend this product. It is so darn convenient. The problem is that the test measures the battery without a load. I intentionally saved various batteries that the device it was being used in indicated that the battery needed to be replaced.

In most cases The Tenergy T-333 indicated that the battery was good. The shortcoming is that the batteries are not tested under load, i. e. , are measured open-circuit. Unfortunately, battery testers that do test under load, test far few types of batteries and are much more expensive.

So, the Tenergy T-333 can’t be beat for convenience and price and can tell a dead battery from a well-charged one. Testing for a weak battery, well, that isn’t within the T-333’s ability.

I was surprised; I’ve used battery testers all my adult life, mostly Radio Shack products. A battery tester is usually a plain vanilla product. This one isn’t. It’s designed to be used without much thought, and to be used with speed or haste.

You only need to fit your battery into the appropriate slot, and look at the scale. That’s it. It doesn’t require looking at a User Guide (I can’t remember if it came with a User Guide–I don’t think so).

There is a slight downside: it requires one AAA battery to work–included with the product. So, while you’re testing batteries, you have remember, at some point, your AAA battery must be replaced and the replacement must be on hand.

But if you have klutzes in your family, at your workplace, this is the battery tester for you and them.

Extra fast delivery. Great product (non-rechargeable batteriesonly). This battery tester measures the battery voltage under load. 150mA (AA,C,D), 50mA (AAA, NiCad, large button cell), 1mA (small button cell)and 10mA (all others).

Be sure to test 3/4in button cells only under the red button (50mA drain) Testing them with the test leads applies only 1mA drain. (For rechargeable AAA,AA and 9V batteries, yoiu need a tester that measures mAhr).

This meter seems to work fine but it is no where near as large a meter as described. The specs show this meter to be 8. 75″ high X 4. 5″ wide X 1. 5″ deep. That is probably more likely the measurements of the card it came packaged on.

The actual size of the meter itself is 3. 75″ high X 2. 5″ wide X 1. 0″ deep. It is a very small meter and much smaller that I was expecting. The meter does seem to work just fine, the case is strong and sturdy and it comes with fold out legs on the back to prop it up which makes it easier to use and view the meter face.

The test leads are 2 feet long which seems to be enough for most battery testing. I compared this meter to a Radio shack battery tester I have and it gave the same indication for several batteries so it seems to be accurate.

This is the second one of this particular battery tester that I have owned. I really loved the first one, so when I needed to get another, I decided to get the exact same battery tester. It’s nice and compact, easy to use and read, and can be used with a variety of different battery types.

It is also a vbery good price.

the battery tester is easy to use and accurate in its readings. I recently had a small flashlight on for an extended period of time. when I cut it off it would not turn back on. I tested the single AA cell and it showed the battery was just in the red zone needing a new one.

I put a new battery in, it tested well into the green zone, and the flashlight was back in business!.

We had so many batteries laying around with no idea which were good or bad. I decided to do something about the mess. This device works great and is inexpensive. I recommend it to anybody with the same problem! Useful for troubleshooting if you think you have a bad electronic device like a remote or a battery operated clock too.

If its not a bad battery, you know its the device.

Simple little gadget I shouldve bought years ago. Great investment. I got two!The slide is not spring loaded, which is good, no snapping shut on fingers. If I wanted that Id wrap a rubber band around the 9 volt terminal and the slide.

Once you size the slide you can check batteries real quickly. Buy one, youll see!.

I have owned voltmeters for many years and just measuring voltage isn’t good enough. I had a flashlight that just quit working and all batteries were just like they were supposed to be at 1. 5 volts.

Under load they were dead. I looked around locally for testers, but they seemed cheaply made. After looking on B&H one tester stood out. I went to the manufacturer site and looked at their documentation and even one site that recommends the tester [with great documentation] for their battery-operated blinds.

I received the tester received earlier than expected from B&H and spent several hours looking at every battery in the house. The tester is easy to use, and it makes a satisfying click when the level of charge is displayed.

Found several devices with batteries beginning to leak. Found several new when stored batteries that were not powerful enough to operate anything. Not much worse than needing a battery and finding the stock useless.

I can test my wife’s music stand lights batteries before she heads out for a gig. Yes, it is more expensive than other testers. It is also bigger than I thought as some other reviewers mentioned. I always have extra batteries with me when out and about anyway.

At least now I will know whether my backup batteries are good or just dead weight.

Excellent product very easy to use far more accurate than digital. Only one drawback-it’s made in china. Would love to see Milton bring it back to the U.S.

It is easy to use but would be better with a little longer leads

This product is very good for the price. Works well, as per the instructions.

This product works well. The price is very reasonable. It is important to read the manual which is fairly well written, and it doesn’t hurt to know a little bit about electricity and batteries. In unloaded mode, it is simply a voltmeter.

It agreed with my high impedance multimeter. But, the Schumacher meter has graduated markers which tell you if your unloaded voltage is consistent with a healthy battery fully charged or not. When you flick the switch to loaded mode, the Schumacher meter measues the voltage of the battery when it is producing 100 amps of current.

The voltage across the battery drops from the unloaded case due to the internal resistance in the battery. There are markings on the meter that tell you if the loaded voltage is in the ok range. Also, if the engine is running, using unloaded mode, it tells you if your alternator is providing enough voltage to charge the battery.

The manual recommends that you should put accessories on to place additional load on the alternator to make sure that it is good enough to maintain charge on the battery even when maximum accessory loads are being applied.

There are graduated markings which show the acceptable range for the alternator voltages. You can test the current draw for your starter too. There are instructions in the manual for this. Basically you can read the voltage drop across the battery when the starter is being powered.

If this voltage drops too low, the current that is required by the starter is too high. The instrument works for 6 volt batteries as well as 12 volt. It is large and a bit heavy because it must dissipate the heat from 100 amps produced by approximately a 12 volt source, or a DC power dissipation of 1.

2 kilowatts. That’s why the product sometimes smokes. There are wires inside that heat up due to resistive heating, and if there is any condensation or other residue on the wires, the heat may evaporate it.

The wires are housed in a ventilated cage, so that they don’t get too hot. That’s why the product is largish. Nothing to be concerned about the smoke. The cables are short. This is probably to reduce the cost, but also to reduce the resistance in the cables.

Even a tenth of an ohm in resistance at 100 amps would introduce 1 volt error in measuring the loaded battery voltage. This is a useful product to have if you have a battery warranty, and your battery provider is arguing with you about whether or not your battery is bad, or whether it’s something else in your car, like your alternator or starter.

You can disconnect the battery from the car, charge it up with a battery charger, and do the load test. If it fails this test, then the battery is bad. Case closed. No more baloney from the warranty provider that it’s probably not the battery.

Getting a warranty battery supplier to honor their warranty would pay for about five of these instruments. If you have one or more than one car in the household, it can be used to periodically monitor the health of all your car batteries, and replace the batteries when they are getting too weak.

Unfortunately my Duralast 6 Volt and 12 Volt Handheld Battery Tester was stolen October 2021. Great if this is all you have. Otherwise it’s heavy enough & the User Manual is a good thing to read even before a quick use.

Most people don’t use these. I’ve yet to see anyone using this product. Nothing wrong with it if there’s nothing else. Lucky had many options to check battery voltage. If a person lives out in the Country far from the city.

I’m a do it yourselfer and responsible for keeping our three vehicles in top running order. Over the years I used a basic multi-meter to monitor battery/alternator voltage. However, I was never was able to perform a load test unless I had my wife or son crank while I read multi-meter.

I recently had an a cranking issue with one of the vehicles. Although the battery reflected 12. 4 volts(engine not running) it simply wouldn’t crank. After checking alternator output and ruling out starter, I realized that I had experienced this issue before.

weak/damaged battery. Rather than waiting for my wife to return from work to perform the load test I decided to buy the the BT-100 at a local store. Bought the BT100 and charged the battery. Hooked up the BT-100 and performed the load test.

Just as I thought, the battery was a goner. The BT100 is a vital tool to assist any user with keeping their auto in top running shape. Performing easy maintenance testing using the BT-100 will prevent potential no starts down the road.

It’s easy to use this tool. I highly recommend the BT-100.

Tests 6V & 12V batteries up to 1000 CRANKING AMPS 135A load test 12V charging system analyzer. Tests battery state of charge, cranking ability, charging system output & starter system. Simple to use, complete test in less than 10 seconds.

Fully insulated, color-coded clamps. Completely portable – external power source not required. For conventional & maintenance-free batteries in cars, light trucks, lawn tractors & RVs. I really like the quality & ability of functions the 135A Battery Tester w/ Clamps provides & I would recommend the 135A Battery Tester w/ Clamps to others.

I received this 135A Battery Tester w/ Clamps and am completely satisfied with its ease of use and accuracy. I am not a mechanical person by any means; consequently, having a product that I can manipulate with ease is a high priority for me.

In addition, lately, I’ve been on more long distance road trips and need an accurate testing of one of the most important instruments on my vehicle. Plus, it’s easy to store since it’s compact.

Instead of me going to autozone to have my battery checked out I am now able to do it on my own. I love that as a woman I am able to do some things where my car is concerned on my own. This has helped me not be taken advantage of by men or stores whom think I don’t knkw these things on my own.

I love proving men wrong and this tool has helped me do that where my battery is concerned.

Either the model I received did not have a screen to navigate to for actual ca/cca results, or it was too difficult to navigate to. Only gave me a pass/fail result after entering battery info. I did not find mention of actual test ca/cca results in my manual.

I cannot comment on accuracy as I only tested it on new batteries. Either way, I returned it for a different brand (my manager insists on digital testers), and I will always trusts a carbon pile load tester over a digital tester.

For the pro it doesnt provide enough information and is overpriced for what it is, for the novice it is way overpriced for what it is.

Bought this to replace an identical unit that I did something dumb to and destroyed. I have found this to be completely accurate as long as it is used on a fully charged battery. I also have a carbon pile, and the results are always very close between the two.

Just be careful, it will let you test on batteries that really need more charge before testing. If you’re not sure of state of charge, charge overnight on low first, then test. You won’t go wrong with this simple tester.

I’ve used on dozens of batteries and it hasn’t led me wrong.

This meter is simple to use and performs all functions you could ask for from a battery tester. The only problem Ive had with it is it will not work on batteries that are in the extreme cold. I work on generators that are spread out across a mine site north of Fort McMurray and at this time of the year the temperature is consistently -30, the meter is useless in this temperature.

It is ideal for a shop setting.

This charger is a great deal — it has brought some of my poorly performing batteries back from the dead, and does a great job at charging and conditioning them. It’s pretty straightforward to use if you’re not geeky about batteries, and incredibly powerful and fun if you are.

I really appreciate how much information it gives me throughout the process. The displays are useful and informative. My only quibble is that it can be a little tricky to set complex combinations of modes on different batteries, but who does that, anyway? With only four buttons, the interface is can be a little bit unintuitive, but not worth knocking off a star for.

I’ll take this over my (fried) LaCrosse any day, and I generally prefer it over my Maha charger if I’m doing 4 or fewer batteries. I especially love being able to reliably charge an odd number of cells without worrying about which slot I put them in.

I would give 5 stars but I only have 2 other chargers to compare to. Both energizers. One charges slow, which is good in my book. But it can only charge in pairs, which causes it to overcharge one battery if they are not totally balanced.

My other charger is a fast charger, which is less desirable in my book, but can charge individually. It won’t charge if it thinks something is wrong. This newest charger has all kinds of tests you can run and charged flawlessly.

Terrific product.

I’ve kept an eye on rechargeable batteries and smart chargers for a long time and finally took the plunge and made the investment. I’ve compared with the Maha and LaCross chargers and found the Opus V2.

2 is not only the best value, but also the best choice among smart chargers of this size used primarily for AA and AAA batteries (C and D batteries being optional). This unit has been refined and there are NO quirks using the interface or of “endless” button pushing required by some others.

It offers just about any option you could want in charging, measuring capacity and “restoring” you could want in a charger and it does it well at any practical charge/discharge rate you could want and does it as easily as can practically be done with four independent charging slots.

Also, I have to date, found no heat issues at all using this unit, which speaks well of its electronics and the build quality seems very good as well. The Opus 2400 V2. 2 has lived up to everything it promised with no surprises.

This Improve BAT-200 battery tester is great for testing batteries type AA,AAA,D, C, 9V, and Lithium coin. The function is to quickly identify if the battery is still good or needing a replacement. For the actual battery measurement, I use Fluke79 digital multitester to measure the remaining voltage and current to precisely determine the condition of the battery.

When battery is weak, usually the current level is weak as well. The battery voltage could degrade but only a fraction of it. In all regards, this Amprobe BAT-200 battery tester is a great tool for checking battery condition when multi tester is not available.

Not intended for car batteries use. Highly recommend it.

Disappointed that the holder isn’t spring loaded. I bought 2 of these to replace a Radio Shack tester. It was spring loaded, but the spring broke and there wasn’t anyway to open the case to fix it. Also, there isn’t very much room to test a button battery, less than 1/4 inch.

The smaller ones are easy enough but the 2032’s are a challenge to test.

Easy to use and accurate for household use. I had batteries by the handful in the junk drawer. Some were still good, but getting the volt meter every time was not convenient for the whole family. The BAT-200 cuts down on the number of batteries in the drawer and headed to recycle before their time.

I have old and new batteries. some of the batteries i had for 5 years without using them. i needed to see which batteries were low so they could be thrown out. I bought this battery testers for that reason.

I was disappointed when i saw it. it has “LOW” and “GOOD” as the reading. the bad part is that it doesn’t say how good. all the batteries I tested put the needle on the “GOOD” reading but in the same spot (on the second “O” of the word Good) the needle did not go into the middle of the word Good nor to the far end(where the “D” is).

how could batteries that been around for 5 years has the same voltage as batteries that was just PURCHASED. my thoughts are if the batteries are good, then how good are they? I don’t think this is a good way to measure batteries voltage.

there need to be a numeric scale. for this reason i rated it a two.

Works great for multiple batteries. We have had one in the past for many years. Accidently broke that one. Purchased another type and was awkward to use.

I tested this item with an old and a new AA battery and an old and new 9 volt battery. True results with the AA battery. BUT very scary outcome with new 9V2 rayovac fusion battery. When removed from tester the 9v was very very hot to the touch.

Scary. I do not recommend this tester being used with 9 volt batteries. The new 9v worked as expected when inserted into my smoke detector.

This model is simple and easy to get accurate results. The concepts are easy to understand, without going into too much interpretation. Pretty much go or no go. Important to make solid connections. The battery measuring can be greatly effected, if connections are not well made.

For example, a bolt loosely threaded into a side post battery showed the battery to be junk. Adding a nut and tightening it gave a good result. It is that sensitive! It gives an actual value of cold cranking amps, along with the go/no go indicator.

Alternator and starter testing are a simple test and yields voltage readings which can be used to determine if a component is “on the edge” of good/bad or defective. The price is reasonable and even a novice can save money by not replacing parts that may or may not be defective.

It will pay for itself quickly.

A commercial version of this unit is used by the Telecomm industry to test large Central Office batteries. This PBT300 works great for testing auto batteries. It seems to be very accurate. The Start-Voltage-Drop test function works well and is perfect for testing battery condition and could also test battery cables if attached to the starting motor and engine block.

It can also determine the condition of the Alternator charging system. Use of this tester is a great way to determine when your battery is nearing it’s end of life. You can replace the battery BEFORE it fails and leaves you stranded.

I brought this charger because I work on vehicles and knew it would come in handy. I had the $60 cheaper version and I think that it does everything that this $215 model does except tell you the top voltage for the alternator and the low voltage for the starter.

If I had to do it all over again I would have brought the cheaper model. I gave this four stars because it does what it says it would do. pruittjr1.

An good value, easy to use battery tester for ordinary types of replaceable battery. No bother reading a meter, the LED display gives an instant indication of the battery state. Place the battery between the jaws, push up the red jaw to make contact and the traffic light display shows what is left in the battery.

Just make sure the battery is round the right way, as shown on the tester.

Received the charger yesterday. Started testing a bag full of batteries. It worked fairly well except there were a few which did not give any reading at all. I wonder if anybody who purchased these has any idea why some batteries did not give a reading.

Many thanks, Peter.

Very basic and cheaply made. Somewhat awkward to use compared with my old one. Power indicator values tend to change each time a battery is tested, and I ended up testing each battery a dozen times and taking an average of all readings I’ll be looking to buy a better one.

I was looking for a simple and inexpensive battery tester to test common household batteries: AAA, AA, C, D, 9V and button cells. This fits the bill nicely. I’ve tested a few different sized batteries, and it seems to work just fine.

It makes it easy to test batteries w/an unknown quality that have been sitting in the drawer for too long. And it was on sale. Can’t beat that! :-).

I used this to test AA & AAA batteries that were too weak to sufficiently run devices but the needle was up in the Good range. When I tested the same batteries with a voltmeter the reading was in the 1.

2 – 1. 3 range which means the batteries aren’t strong enough to perform as necessary. I had intended to give it to my elderly parents for ease of use but I will NOT be giving it to them now since they’ll think an appliance’s batteries are ok instead of too weak then replace the appliance thinking it is faulty which would waste money they can’t afford to spend.

Great product for everyday use. This is not some complicated, electrical engineer device. This is made for quick battery testing in home use. Works great. Don’t expose/test your battery for very long time since the device utilizes the tested battery’s power.

Great buy!.

This simple to use battery tester tests AA, AAA, C, D, 9V, and button batteries. Simple to use, don’t have set voltage like a Volt meter. Green good, yellow weaker, red replace. Those who are not technical minded can easily use it.

I’ve owned it a while, and it feels flimsy.

I’ve had a previous one. Very handy to have. Easy to use. Only negative is that the small nib that protrudes out for the Negative side of battery, doesnt stick out enough for some batteries for a reading.

Particularly the 123 battery. Both testers I have. have the same issue. Otherwise. a good product.

A few times something is acting not right. I check the battery, even though it is not very old, it’s power dropped enough that it could not perform anymore. Replace battery, problem solved. I bought enough to give to my kids also.

There is one similar looking one to this one online, but to me this one is superior. I think the other one requires batteries, no battery required here.

After using it a couple times it began to make sense. At first virtually every battery showed in the green section, even bad ones. However, when I closely looked at far high the gauge was showing, I can now easily discriminate the bad batteries.

This tester uses many levels per section, which gives excellent perspective on how long the battery will probably last.

How many times do you have batteries lying around, and you have no idea how much life they have left? Perhaps you put 2 batteries in something, and it doesn’t work, or not well, but you have no idea if the culprit might just be ONE of the 2 batteries? No amount of shifting around of batteries gives you the answer.

though it may get the product to work for a while. Now I can just test and toss – or test and keep! Great product.

Works great and was at a fantastic price. Thank you.

Use on my sump pump battery, My car Batteries , so easy to use !!