will it test a 3 volt button battery?

It can do 1.3-1.5 button cell only. It does have two nodes on the front that are for Lithium 3 volt batteries but it doesn't say "button" type. You charge the 1.5 size button by slipping into a slot on the right side of the charger and pressing that red button you see on the front.

Does the Battery Tester use an internal battery that must periodically be replaced?

No it does not use an internal battery, the meter gets its power from the battery being tested, the better the battery the stronger the test reading. The main purpose of this meter is to give you a general idea of remaining battery life.

Will this test 9volt batteries

Yes. It has 9 test positions, as follows: Button Cell & Zinc Air 1.3V -1.5V, AAA-N & Ni-Cad 1.5V, AA-C-D 1.5V, 22.5V, 15V, 12V, 9V, Photo 6V, Lithium 3V

As per Amazon site: This item is non-returnable

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Gardner Bender GBT-500A Analog 1.5 V Button Cell/22.5 Photo/AA/AAA/12 V/9 V/Lantern Cells & More, Leads Battery Tester,14 Range, Black

Gardner Bender GBT-500A Analog 1.5 V Button Cell/22.5 Photo/AA/AAA/12 V/9 V/Lantern Cells & More, Leads Battery Tester,14 Range, Black

Product ID: 275566429

Details

Brand
Gardner Bender
Colour
Black
Item weight
100 g
Power source
Battery
Style
14 Battery

⚡Voltage range 1.5V to 22.5V

📏Compact 3.8x6.3x9.6 cm size

🔋14 battery types tested

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€ 30.72

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Sold byAmazon SpainDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔋 Never get caught powerless—know your battery’s true charge every time!

TRUSTED LONGEVITY - A 20-year user favorite with a 4.6-star rating, ensuring reliability you can count on.
COMPLETE TESTING KIT - Includes test leads and coin battery probes for versatile and hassle-free use.
PRECISION ANALOG READOUT - Instant, easy-to-read needle gauge for accurate battery health insights.
DURABLE PORTABLE DESIGN - Lightweight and compact, built to last and ready for on-the-go diagnostics.
UNIVERSAL BATTERY COMPATIBILITY - From tiny button cells to robust lantern batteries, test them all with one device.

The Gardner Bender GBT-500A is a versatile analog battery tester that accurately measures voltage from 1.5V button cells up to 22.5V lantern batteries. Featuring a clear analog needle display and included test leads, it offers reliable, on-the-spot battery health diagnostics for alkaline, rechargeable, and specialty batteries. Compact and durable, this USA-made tester is a trusted tool for professionals and enthusiasts alike, backed by over a decade of proven performance and high customer satisfaction.

Specifications

ASIN	B000BOBZJ0
ASIN	B000BOBZJ0
Best Sellers Rank	#58,341 in Electronics ( See Top 100 in Electronics ) #68 in Household Battery Testers
Brand Name	Gardner Bender
Color	Black
Country Of Origin	USA
Country of origin	USA
Customer Reviews	4.6 4.6 out of 5 stars (4,074)
Customer reviews	4.6 4.6 out of 5 stars (4,074)
Date First Available	7 August 2012
Department	Unisex-Adult
Global Trade Identification Number	00032076016869
Included Components	Rough Electrical^battery-testers
Is Discontinued By Manufacturer	No
Item Dimensions	38 x 64 x 97 millimeters
Item Type Name	Battery Tester
Item Weight	100 g
Item model number	GBT-500A
Manufacturer	Actuant
Manufacturer	Actuant
Measurement Type	Voltmeter
Minimum Operating Voltage	1.5 Volts
Model	GBT-500A
Part Number	GBT-500A
Power Source	Battery Powered
Product Dimensions	3.81 x 6.35 x 9.65 cm; 99.79 g
Specification Met	RoHS
Style Name	14 Battery Range
UPC	032076016869
Unit Count	1 Count

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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