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BLACK+DECKER BM3B Fully Automatic 6V/12V Battery Charger/Maintainer with Cable Clamps and O-Ring Terminals, Multi, 1.5 Amp

BLACK+DECKER BM3B Fully Automatic 6V/12V Battery Charger/Maintainer with Cable Clamps and O-Ring Terminals, Multi, 1.5 Amp

Q: How is Black Decker 1.5 amp battery charger compares to Axtra 3.6-amp battery charger maintainer?

The Black & Decker battery charger has been out a while and gets good ratings. The Axtra 3.6 battery is new but has very good specifications. If you are in an area with wide temperature ranges, the Noco Genius 5 has a temperature sensor so it's operational range is -4 F to 110 F.

Q: What is the float voltage? When the charger indicates it is done charging what is the voltage of the battery?

As this is a "true float charger", the maintenance voltage is dependent upon the Full Charge Voltage (FCV) of the battery, which is usually anywhere from 12.6 to 13.2 depending on battery design and how much sulfation has taken place on the internal plates. Unlike chargers that use a "trickle maintenance mode" with a fixed voltage output, the B&D unit senses when the battery will accept no more current (full charge) and then stops sending voltage and rests until the battery voltage drops below that threshold and then it should "wake up" and start charging again.

Q: how fast does it charge

Math will tell you. If it's a 1.5 Amp charger and you're trying to charge a 7 Ah battery, 7/1.5 = 4.7 hours till full charge. If it's a 50 Ah battery, 33.3 hours till full charge (50/1.5 = 33.3). But, there's typically about a 20% efficiency loss, so it's really more like 5.6 hours and 40 hours for these examples.However, you may not need full charge if you're wanting to charge a battery that will be installed in a car or bike that has an alternator which will continue to charge it while it's running. Also, it's not a good idea to use too powerful of a charger to charge the battery quickly. For example, using a 5 Amp charger on a 2 Ah battery will charge it VERY quickly, but could overheat and shorten the live and cycles of the battery. Different battery chemistry allows for different charging amps. But in all cases, low and slow is better for the life of the battery and safety than fast charging.

Product ID: 81903514

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Details

Brand
BLACK+DECKER
Color
Multi
Product Dimensions
5"D x 1.6"W x
Item Weight
1.2 Pounds
Output Voltage
12 Volts (DC)

⚡1.5 Amp smart charging

🔋6V/12V AGM, GEL & WET battery compatible

🛡️Built-in overcharge & reverse polarity protection

Frequently Bought Together

BLACK+DECKER BM3B Fully Automatic 6V/12V Battery Charger/Maintainer with Cable Clamps and O-Ring Terminals, Multi, 1.5 Amp

SinLoon Cigarette Lighter SAE Battery Charger Cable,12V 15A Cigarette Lighter Plug to Waterproof SAE Quick Release Adapter Extension Charging Cable with Fuse and LED Light(10FT,3 Meter)

Description

🔌 Power up smartly — never miss a charge, always stay ready!

SAFETY FIRST DESIGN - ETL certified with built-in circuit protection against reverse polarity and short circuits.
COMPACT CONVENIENT - Lightweight 1.2 lb charger with built-in mounting bracket for effortless placement anywhere.
DUAL CONNECTION OPTIONS - Choose between easy battery clips or secure O-ring terminals for versatile setup.
SMART AUTO STOP CHARGING - Prevents overcharging by switching to float mode once full, preserving battery life.
UNIVERSAL BATTERY COMPATIBILITY - Seamlessly charges 6V and 12V AGM, GEL, and WET batteries for all your vehicles.

The BLACK+DECKER BM3B is a fully automatic 1.5 Amp battery charger and maintainer designed for 6V and 12V AGM, GEL, and WET batteries. Featuring dual connection options with cable clamps and O-ring terminals, it ensures universal fit and easy installation. Its smart charging technology automatically stops charging and switches to float mode to protect battery health. ETL certified with built-in protections against overcharging, reverse polarity, and short circuits, this compact charger includes a mounting bracket for convenient placement.

Specifications

Item Weight	1.2 Pounds
Item Dimensions D x W x H	3"D x 5"W x 8.9"H
Color	Multi
Energy Specifications Met	ETL
Current Rating	1.2 Amps
Input Voltage	12 Volts
Output Voltage	12 Volts (DC)

Have a Question? See What Others Asked

How is it compare to Axtra 3.6 amp car battery charger?

How is Black Decker 1.5 amp battery charger compares to Axtra 3.6-amp battery charger maintainer?

What is the float voltage? When the charger indicates it is done charging what is the voltage of the battery?

how fast does it charge

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KSh12300

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