Can this product be used on a deep charge golf-cart battery?

It can only be used to detect the car battery, not to charge the battery. Our BM550 battery tester can test all 6v 12v 24v 100-2000 CCA car batteries.

Will this tester accurately measure internal resistance in a 12V deep cycle lawnmower battery?

It measures 6v 12v and 24v system batteries. It does read internal resistance but I’m not sure how accurate that particular measurement is because I have never compared this other battery testers.

How do i know if my car battery test result soh, soc, and cca numbers are good or not?

Not sure about social or soh. Cca is one of two prompted questions. If you are not sure of target cca, you might need to look up you battery model and confirm. Once you input cca, the meter goes through a test cycle and gives you actual cca. It decides good or bad based on the cca you input.

Will it give the remaining ah amp hours for batteries or just cca?

Reported values are CCA's. Remaining AH isn't part of the output. You could, roughly, determine the remaining AH through the SOC (State of Charge). For sake of example, if the battery is a 10AH battery, and the SOC = 80%, then you have, roughly, 8AH "left" in the battery. That's not exactly the best way to derive that but it's a ballpark. The element that isn't taken into account is why the battery SOC is where it's at (e.g. age, degradation, discharge due to parasitic draw, etc.). Depending on the combination of those factors will determine what the actual AH capacity is, at that SOH and SOC.

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Bm550 6V 12V 24V Car Battery Tester, 100-2000 Cca Voltage Tester 2Ah-220Ah Internal Resistance Tester Accurate Digital Analyzer Automatic Battery for Cars, Truck

Product ID: 680280062

Details

Brand
KINGBOLEN
Colour
Black
Item dimensions L x W x H
12.4 x 7 x 2.3
Power source
Battery
Style
Digital

📊100-2000 CCA precise testing range

🔋6V/12V/24V multi-voltage support

🖥️1.8-inch HD digital display

€ 51.80

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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

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Description

🔧 Power up your ride with precision — never get caught off-guard again!

PLUG PLAY CONVENIENCE - Effortless operation for DIY pros and managers—test batteries inside or outside the vehicle in seconds.
USER FRIENDLY HD DISPLAY - Crystal-clear 1.8-inch screen delivers fast, accurate results at a glance.
BUILT IN SAFETY PROTECTIONS - Reverse polarity and clip misconnection safeguards keep your device and battery safe.
UNIVERSAL VOLTAGE COMPATIBILITY - Seamlessly tests 6V, 12V, and 24V batteries for cars and trucks alike.
COMPREHENSIVE BATTERY HEALTH INSIGHTS - Instantly reveals SOH, SOC, internal resistance, and voltage for total battery transparency.

The KINGBOLEN BM550 is a professional-grade digital car battery tester compatible with 6V, 12V, and 24V batteries ranging from 2Ah to 220Ah. It accurately measures battery health (SOH), charge status (SOC), cold cranking amps (100-2000 CCA), internal resistance, and voltage, displaying results on a sharp 1.8-inch HD screen. Designed with safety features like reverse polarity protection and clip error alerts, it’s ideal for automotive managers, DIY enthusiasts, and professionals seeking reliable, fast diagnostics for cars and trucks.

Specifications

ASIN	B09TNFLNGL
Best Sellers Rank	#74,879 in Automotive ( See Top 100 in Automotive ) #115 in Automotive Battery Testers
Brand	KINGBOLEN
Brand Name	KINGBOLEN
Color	Black
Colour	Black
Compatible Devices	Car batteries (6V, 12V, 24V), 2Ah-220Ah, Regular flooded, AGM flat plate, Spiral AGM, GEL, EFB
Customer Reviews	4.5 out of 5 stars 1,351 Reviews
Included Components	NO
Item Dimensions	12.4 x 7 x 2.3 centimeters
Item dimensions L x W x H	12.4 x 7 x 2.3 centimeters
Manufacturer	KINGBOLEN
Min. Operating voltage	6 Volts
Minimum Operating Voltage	6 Volts
Model	BM550
Part Number	KBL550
Power Source	Battery Powered
Power source	Battery Powered
Specification Met	EN 61010-1, IEC 61010-1:2000-1
Style	Digital
Style Name	Digital
UPC	756029690011
Unit Count	1 Count
Upper Temperature Rating	50 Degrees Celsius

Reviews

押**尾

自動設定について！

容量が大きいバッテリーだと電圧の表示が違うことがある、なんどか接続し直すと直る。

16.06.2026

P**T

Batterietester

Ideal für Leien eine Batterie zu Testen.

7.04.2026

M**L

Válido y fácil de usar.

Parece que funciona bien. Tiene aspecto de máquina compleja de taller pero es válido para un par de funciones que tiene. Fácil de usar.

10.07.2025

A**E

A must have product

Every car enthusiast person should use this, very useful to know the health of the battery

10.01.2026

O**9

Producto útil

Cumple con lo especificado

15.04.2026

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

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