Anyone know how this differs from topdon ab100? marketing for bt100 includes boats, but not clear how they differ? ab100 has copper clamps i think.

No difference, unless the test range is smaller ab100. If cca range is same, then you should be fine with using either one.

Does this automotive battery analyzer apply a load to the battery?

No, you have to crank the engine to apply a load for testing. The unit is too small to apply a useful load on it's own.

Wll this load-test a disconnected battery?

Hello, car battery tester 12V Load tester TOPDON BT100 can test a disconnected battery. Any further questions, please feel free to contact us: support@topdon.com.

Is there a bag/case for this? Thought I saw one some where?

A case/bag did not come with the tester.

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TOPDON BT100 Car Battery Tester 12V Load Tester, 100-2000 CCA Automotive Alternator Tester Digital Auto Battery Analyzer Charging Cranking System Tester for Car Truck Motorcycle ATV SUV Boat Yacht

Product ID: 165213039

Details

Brand
TOPDON
Color
BT100
Item Weight
9 Ounces
Power Source
Battery
Style
For cars/

⚡3-in-1 battery, cranking & charging test

🔋100-2000 CCA range

🛠️Spark-proof copper clamps

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€ 91.04

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Sold byAmazon SlovakiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔋 Never get stranded again—know your battery’s health before it’s too late!

COMPACT DURABLE DESIGN - Fits perfectly in your glove box with premium spark-proof clamps for safe, reliable testing anytime, anywhere.
TRIPLE TEST POWER ASSURANCE - Verify battery health, engine cranking power, and alternator charging system in one sleek device.
UNIVERSAL VEHICLE COMPATIBILITY - Test batteries on cars, trucks, motorcycles, boats, ATVs, SUVs, golf carts & more—no charging needed.
USER FRIENDLY LED MENU INTERFACE - Quickly interpret results with color-coded LEDs and intuitive menu navigation—no guesswork required.
COMPREHENSIVE 12 V BATTERY HEALTH SCAN - Instantly access SOH, SOC, voltage & current for all lead-acid types including AGM, EFB & GEL.

The TOPDON BT100 is a compact, professional-grade 12V car battery tester supporting 100-2000 CCA batteries across multiple vehicle types. It delivers fast, accurate diagnostics on battery health, cranking power, and alternator function using a safe, spark-proof design with intuitive LED indicators. Ideal for managers and DIYers who demand reliable, on-the-go vehicle maintenance.

Specifications

ASIN	B07Z67MMGC
Best Sellers Rank	#2,361 in Automotive ( See Top 100 in Automotive ) #2 in Battery Testers
Brand Name	TOPDON
Color	BT100
Compatible Devices	Cars, Trucks, Motorcycles, Boats, ATVs, SUVs, Golf Carts
Customer Reviews	4.7 4.7 out of 5 stars (5,507)
Global Trade Identification Number	00850028162088
Included Components	1*Car Battery Tester
Item Dimensions	5.3 x 3 x 1 inches
Item Type Name	TOPDON USA - BT100 BATTERY TESTER
Item Weight	9 Ounces
Manufacturer	TT TOPDON
Measurement Type	Voltmeter
Minimum Operating Voltage	12
Model	BT100
Part Number	TT TOPDON
Power Source	Battery Powered
Specification Met	Cca
Style Name	For cars/ trucks/ Boats
UPC	850028162088 632111309187
Unit Count	1.0 Count
Upper Temperature Rating	140 Degrees Fahrenheit
Warranty Description	TOPDON offers 30 days return & 12-month friendly customer service.Safety tips: It’s important that you always turn off your car’s ignition when testing your battery, and always read the safety features section in the manual carefully to ensure optimum safety.

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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