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Compact black rectangular charger with red and green status LEDs

BatteryJack inc.

BatteryJack inc. 6V 12V Smart Charger Maintainer 3.0A

SKU CH-BPQG-VDNYG

Charges and maintains 6V and 12V lead-acid batteries at 3.0A with three-stage smart charging and automatic shutoff

  • 3-stage smart charging optimises 6V and 12V lead-acid batteries
  • Automatic shut-off prevents overcharging when battery reaches full
  • Multi-voltage input 100–240V AC suits worldwide mains supply
  • Compact 120×60×38 mm design fits tight storage spaces
  • Built-in short-circuit and polarity protection guards against wiring errors

Smart 6V/12V charger for lead-acid batteries

This automatic charger and maintainer works with 6 V and 12 V lead-acid batteries at a 3.0 A charge rate. It suits owners of motorcycles, cars, lawn tractors and similar vehicles who want a set-and-forget solution to keep starter batteries ready. The unit handles both voltage classes without manual switching.

Check battery voltage and chemistry before use

Confirm the battery is a 6 V or 12 V lead-acid type; other chemistries are not supported. Ensure the AC supply is within 100‑240 V at 50‑60 Hz and that the battery terminals are clean and correctly identified for polarity. The charger will not operate if polarity is reversed.

LED status and safety protections simplify daily use

A red LED shows charging in progress and a green LED signals a full charge, removing guesswork. Built-in safeguards include short-circuit, reverse-polarity and over-voltage protection, so the charger can stay connected for long-term maintenance without risk of damage.

How it compares

Measured against everything we stock in Jump Starters, Chargers & Power Packs, at today’s prices. Recalculated every night.

Price $13.99
Cheaper than about 60% of the 1,744 comparable items (median $14.99).

Specifications

No published specifications for this item yet.

Questions about this item

What comes in the box with the BatteryJack 6V 12V Smart Charger Maintainer 3.0A and do I need to buy cables separately?

The charger is supplied as a 1-pack unit with integrated output leads for 6V and 12V lead-acid batteries and an AC input for 100 to 240V 50 to 60Hz mains. No extra cables are required.

Should I choose the 6V or 12V setting for my battery?

Select 6V for batteries rated at 6V (floating voltage 6.7 to 6.9V) and 12V for batteries rated at 12V (floating voltage 13.5 to 13.8V). The charger delivers 3.0A constant current in either mode.

What does the 3.0A charging current mean when the unit is connected to a vehicle battery?

It supplies up to 3,000mA constant current until the battery reaches 14.3 to 14.7V (12V) or 7.2 to 7.4V (6V), then switches to float mode at 13.5 to 13.8V or 6.7 to 6.9V respectively.

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