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Compact black rectangular charger with LCD screen and attached hook, clamps connected by coiled cables

BatteryJack inc.

BatteryJack inc. 0.75 A 6 V / 12 V Smart Battery Charger Maintainer car electronics accessory

SKU CH-PK53-2CW05

Smart 0.75 A charger maintains 6 V and 12 V lead-acid batteries with automatic voltage sensing, LCD readout and full safety protection

  • Product typeWired Car Charger
  • Automatically detects 6 V or 12 V for flexible use
  • 750 mA charge current keeps batteries topped up
  • LCD shows voltage and charge level at a glance
  • Multiple protections prevent overcharge, short circuit and reverse polarity
  • Hook attachment lets you hang the unit safely outside the work area

Smart Battery Charger Maintainer

The BatteryJack inc. 0.75 A charger automatically senses 6 V or 12 V lead-acid batteries for cars, motorcycles, RVs and trucks. It charges at 750 mA and maintains voltage to prevent overcharging during long storage periods. An LCD shows measured voltage with a bar graph so you can confirm charge level at a glance.

Hook Mount and Automatic Operation

A built-in hook lets you hang the unit outside the work area for safety and convenience. Digital prompts guide each step so the process stays effortless even if you rarely use a charger. Protection covers short circuit, reverse polarity, overcharge and overheat, reducing the risk of damage from incorrect connection.

Dual-Voltage Input for Steady Maintenance

The charger accepts 105-125 V AC at 60 Hz or 220-240 V AC at 50 Hz, delivering 7.2 V for 6 V batteries and 13.9 V for 12 V units. The 0.75 A output is designed for slow, continuous maintenance rather than rapid recovery of deeply discharged cells. It keeps stored batteries ready without the stress of high-current bursts.

How it compares

Measured against everything we stock in Car Audio Accessories & Wiring, at today’s prices. Recalculated every night.

Price $21.99
Typical for this category: the median of 2,768 items is $21.99.

Specifications

Product
Product typeWired Car Charger

Questions about this item

How do I confirm the charger is maintaining the battery correctly after connecting it?

The LCD shows measured voltage with a bar graph indicating charge level, and digital prompts guide you through the charging and maintaining process.

What comes in the box and what extra items are needed to start charging?

The unit includes hook attachments for hanging outside the work area; you only need a compatible 6V or 12V lead-acid battery and an AC outlet.

Which voltage setting should I select for a 12 V lead-acid battery?

The charger automatically senses 6 V or 12 V, so no manual selection is required; it will apply the correct 13.9 V charging voltage for a 12 V battery.

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