Where can I buy another load test switch for the unit?

Any auto parts store, NAPA, O’RIELLYS, Auto Zone. You may have to order it. Oh and Harbor Freight.

Wll this load-test a disconnected battery?

Hello, Thanks for reaching out. The Neiko 40510A Car Battery load tester is designed for this purpose. Please see user manual for detailed step by step instructions. If you have any additional questions/concerns please feel free to reply to this message below.

My boat battery is little over 13 volt. Can it be tested using this device?

Yes. Most fully charged 12 volts will show 13 volts. It is a great little tester and works well. (golf cart batteries)

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NEIKO 40510A Car Battery Tester | 100 AMP 6 and 12 Volt Automotive Load Checker | CCA Analyzer

NEIKO 40510A Car Battery Tester | 100 AMP 6 and 12 Volt Automotive Load Checker | CCA Analyzer

Product ID: 62695548

Details

Brand
NEIKO
Color
Black
Min. Operating Voltage
6 Volts
Power Source
Battery
Style
Car Battery

⚡Tests 6V & 12V batteries up to 1000 CCA

🔋100 AMP fixed load current

🛠️Durable copper clamps with rubber grips

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2053489₫

Duties & taxes included

In stock

Sold byAmazon VietnamDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Details

Brand
NEIKO
Color
Black
Min. Operating Voltage
6 Volts

Description

🔧 Power up your confidence—never get stranded with NEIKO’s ultimate battery tester!

ROBUST BUILD QUALITY - Copper clamp connectors with color-coded rubber grips ensure secure, reliable connections every time.
PRECISION LOAD TESTING - Simulates real starter motor draw with a 100 AMP fixed load for accurate battery health insights.
FAST RELIABLE RESULTS - Quick 10-second load tests with ±0.2V accuracy to keep your vehicle powered and ready.
PORTABLE DIY FRIENDLY - Compact design with ergonomic handle and anti-spark switchgear for safe, on-the-go diagnostics.
DUAL VOLTAGE COMPATIBILITY - Effortlessly tests both 6V and 12V automotive batteries, covering cars, trucks, boats, and more.

The NEIKO 40510A Car Battery Tester delivers professional-grade diagnostics with a 100 AMP fixed load, accurately testing 6V and 12V batteries up to 1000 Cold Crank Amps. Its rugged copper clamps, anti-spark safety features, and portable design make it ideal for mechanics and DIYers alike, ensuring fast, reliable battery health checks wherever you are.

Specifications

ASIN	B07B3R4TS6
Best Sellers Rank	#61,855 in Automotive ( See Top 100 in Automotive ) #65 in Battery Testers
Brand	NEIKO
Brand Name	NEIKO
Color	Black
Customer Reviews	4.6 out of 5 stars 1,274 Reviews
Included Components	Battery Tester
Item Type Name	Car Battery Tester \| 100 AMP 6 and 12 Volt Automotive Load Checker \| CCA Analyzer
Manufacturer	Neiko
Measurement Type	Ammeter
Min. Operating Voltage	6 Volts
Minimum Operating Voltage	6 Volts
Model	40510A
Part Number	40510A
Power Source	Battery Powered
Style	Car Battery Tester
Style Name	Car Battery Tester
UPC	816914021488
Unit Count	1.0 Count

Reviews

L**W

7.07.2025

P**M

8.12.2025

A**S

15.04.2026

E**.

12.08.2025

A**R

20.03.2023

L**H

18.03.2026

S**Y

19.10.2023

M**M

11.01.2026

A**L

17.02.2024

G**K

3.03.2024

K**D

20.07.2024

L**N

15.02.2023

D**E

20.04.2024

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2053489₫

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In stock

Sold byAmazon VietnamDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Vietnam.

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