Facebook Twitter Pinterest
Qty:1
Gardner Bender GBT-500A B... has been added to your Cart
Ship to:
Select a shipping address:
To see addresses, please
or
Please enter a valid US zip code.
or

Sorry, there was a problem.

There was an error retrieving your Wish Lists. Please try again.

Sorry, there was a problem.

List unavailable.
Other Sellers on Amazon
Add to Cart
$10.71
+ Free Shipping
Sold by: antonline
Add to Cart
$10.71
+ Free Shipping
Sold by: MidAtlantic Merchant
Add to Cart
$11.79
+ Free Shipping
Sold by: Home Plus Hardware
36 new from $7.50
Have one to sell? Sell on Amazon

Gardner Bender GBT-500A Battery Tester for 1.5-volt Button Cell to 22.5 Photo and Lantern Cells, 1/Ea

4.6 out of 5 stars 520 customer reviews
| 36 answered questions
List Price: $23.01
Price: $11.92 & FREE Shipping on orders over $49. Details
You Save: $11.09 (48%)
In Stock.
Want it Tuesday, April 12? Order within and choose Two-Day Shipping at checkout. Details
Ships from and sold by Amazon.com. Gift-wrap available.
  • Enter your model number above to make sure this fits.
  • Analog Battery Tester
  • Includes test leads for easy testing
  • Tests all common batteries to determine if they are charged or need replacement
› See more product details
36 new from $7.50
$11.92 & FREE Shipping on orders over $49. Details In Stock. Ships from and sold by Amazon.com. Gift-wrap available.

Frequently Bought Together

  • Gardner Bender GBT-500A Battery Tester for 1.5-volt Button Cell to 22.5 Photo and Lantern Cells, 1/Ea
  • +
  • Amprobe BAT-200 Battery Tester
Total price: $18.87
Buy the selected items together

Special Offers and Product Promotions

  • Working on a home project? Need some help? Check out Amazon Home Services and get a $30 Amazon Gift Card when you book your first service. Learn more

Product Information

Technical Details

Part Number GBT-500A
Item Weight 3.5 ounces
Product Dimensions 1.5 x 2.5 x 3.8 inches
Origin China
Item model number GBT-500A
Size EA
Item Package Quantity 1
Batteries Included? No
Batteries Required? No

Additional Information

ASIN B000BOBZJ0
Customer Reviews
4.6 out of 5 stars 520 customer reviews

4.6 out of 5 stars
Best Sellers Rank #3,296 in Home Improvements (See top 100)
#4 in Home Improvement > Electrical > Testers > Battery Testers
Shipping Weight 4.8 ounces (View shipping rates and policies)
Domestic Shipping This item is also available for shipping to select countries outside the U.S.
International Shipping This item can be shipped to select countries outside of the U.S. Learn More
Date First Available November 4, 2005

Feedback

Would you like to update product info or give feedback on images?
Would you like to tell us about a lower price?

Customers Viewing This Page May Be Interested In These Sponsored Links

  (What's this?)
Customer Questions & Answers
See questions and answers

Customer Reviews

Top Customer Reviews

5.0 out of 5 starsBest one I've seen for anywhere NEAR the price
By DrBob on March 15, 2012
Verified Purchase
Edited 12/10/15 to fix some typos. Thanks for kind comments!

This is a very nice analog tester. It has a quality feel, and test leads that appear likely to hold up to long use. It handles a very wide range of batteries. I am very pleased with mine, especially at its low price. There are incredibly cheap units available on Amazon, but they lack the ability to appropriately load the battery being tested. Here's what I mean.

A battery tester works by putting a load on a battery and measuring the voltage at the battery terminals. The reason is that this voltage, measured with a good voltmeter that draws almost no current, changes little as the battery wears out. What does change is that the battery's internal resistance increases, which wastes energy, and the amount of chemicals available to generate current decreases. By putting a load on the battery, the meter can see whether the battery is still able to do its job.

This tester has 9 positions which set it to select a reasonable load and voltage range for a battery type, giving you a much more reliable test than a plain voltmeter can. See the table below. Notice that there are 3 different current drain settings for 1.5 V batteries. These are chosen to roughly match their normal use; 1 mA for tiny button cells used for watches, 50 mA for AAA batteries, used for remote controls, and 150 mA for AA or bigger C and D batteries used for flashlights, etc. If a tester draws too much current, it can deplete the battery just by testing it, and a battery tested at too little load may test "Good" yet not work in your device.

Understanding this, this tester is still very useful in sorting through batteries, even if your device uses an unusually high or low amount of current.Read more ›
14 Comments 312 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback.
Sorry, we failed to record your vote. Please try again
Report abuse
5.0 out of 5 starsWorks Well -- Even with NiMH Batteries
By Georgia Dude on January 1, 2010
Verified Purchase
I spent many hours researching battery testers and decided to purchase the Gardner Bender GBT-500A. It has worked very well. It is easy to use and has been very accurate. I was a bit concerned that it did not list NiMH batteries as being batteries that could be tested. But after more research I noted that NiMH batteries are the next generation of rechargeable batteries (replacing NiCAD). So far the tester has worked like a champ with the NiMH batteries as well as the other kinds listed. I highly recommend it.
5 Comments 94 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback.
Sorry, we failed to record your vote. Please try again
Report abuse
1.0 out of 5 starsNot The Best...
By Dan on February 14, 2014
Verified Purchase
Length: 1:42 Mins
Most battery testers in this price range only tests the batteries voltage. The Gardner Bender GBT-500A battery tester puts a load on the batteries by using resisters. If you test a battery for 5-seconds and the "Replace & Good" indicator needle fluctuates on your GBT-500A means the battery is poor health even though it reads in the "Good" range. Battery readings that fluctuates will not have enough power to operate anything demanding like flashlights camera flash units ect.

Brand new AA Energizer battery reads 70% on the "Replace & Good" indicator and 60% with fully changed AA Sanyo Eneloop rechargeable batteries on my GBT-500A battery tester. Make note of your needle reading on the "Replace & Good" indicator since this reading may very between testers. The GBT-500A battery tester is going to be the best buy in this price range for testing alkaline batteries. Keep in mind the GBT-500A battery tester has a manufacture date of 1995.

The GBT-500A is not a true 1.25 Volt battery tester for rechargeable batteries since the resister is made to put a load resistance of 1.5.Volts the voltage of an "alkaline battery". The most accurate battery tester on the market these days is the "ZTS" which that puts a pulse load test on the battery testing the battery as if it was in use and tells you the % of the battery life remaining. What is a Pulse Load Test? A 'load' refers to a current drain that is applied to a battery. For example, charging the flash in a camera. We use the term 'Pulse Load' to indicate that the load is automatically applied for a specific period of time, then disconnected without user intervention. This method enables testing of the battery under relatively large loads without draining or damaging the battery.Read more ›
6 Comments 114 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback.
Sorry, we failed to record your vote. Please try again
Report abuse
5.0 out of 5 starsA True Battery Tester
By C. R. Cannon on August 27, 2011
Verified Purchase
Important to understand about this battery tester compared to other testers: this tester draws the proper amount of current according to the battery size. So a battery that passes this tester will REALLY WORK wherever you install it. Other cheaper testers only check the no-current voltage of the battery--an almost dead battery will show the proper voltage, but will NOT function properly when installed in a device that draws current. With the Gardner Bender tester, you can check each battery separately when your electronic device reports "battery low" and recycle only the batteries that are truly used up; the others can safely be returned to service. The best and only choice for a compact battery tester.
Comment 31 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback.
Sorry, we failed to record your vote. Please try again
Report abuse
4.0 out of 5 starsWorks well!
By G N on May 19, 2010
Verified Purchase
Works very well. My only reservations are that it needs a NiHM and AA and AAA Lithium setting or needs to be relabeled. It has a NiCad setting which can be used for NiHM batteries and the AA and AAA Alkaline setting can be used for Lithium batteries because they are similar. Finally, the test probes, electrical connects, are standard pointed needles. It would better if it had flat contacts or a flat side on the probe. After using this battery tester for about a year now, I found the best way to check batteries is to put the minus side of the battery on the silver button marked "-" and use the red probe to contact the plus side of the battery and not use the black probe anymore.
Comment 41 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback.
Sorry, we failed to record your vote. Please try again
Report abuse

Set up an Amazon Giveaway

Gardner Bender GBT-500A Battery Tester for 1.5-volt Button Cell to 22.5 Photo and Lantern Cells, 1/Ea
Amazon Giveaway allows you to run promotional giveaways in order to create buzz, reward your audience, and attract new followers and customers. Learn more
This item: Gardner Bender GBT-500A Battery Tester for 1.5-volt Button Cell to 22.5 Photo and Lantern Cells, 1/Ea
Set up a giveaway

There's a problem loading this menu right now.

Learn more about Amazon Prime.