BatteryJack inc. 12V Smart Battery Charger Maintainer With Ring Terminals
A 12 V automatic smart charger with LCD display maintains 2–90 Ah lead-acid, AGM, GEL and VRLA batteries at up to 3.8 A and includes interchangeable ring terminals and clamps
- Charges 2–90 Ah lead-acid, AGM, GEL, VRLA batteries
- LCD display shows charging status and protection alerts
- Automatic multi-stage charging with reverse-polarity, over-charge and thermal protection
- Switchable 6 V / 12 V output up to 3.8 A max current
- Includes interchangeable alligator clips and ring terminals
12V Smart Charger for Lead-Acid Batteries
The BatteryJack inc. 12V Smart Battery Charger Maintainer charges and maintains 6V and 12V lead-acid batteries including WET, MF, AGM and GEL types. It suits capacities from 2 to 90Ah, making it suitable for motorcycles, cars and snowmobiles. The unit operates automatically once the battery type and terminal set are selected.
Automatic Protection with LCD Monitoring
The charger delivers a maximum current of 3.8A with a maximum charging voltage of 14.4 or 14.7V depending on the selected mode. Built-in protections guard against reverse connection, over-charge, short-circuit, over-temperature and high or low voltage conditions. An LCD display shows the charging status throughout the cycle.
Interchangeable Ring Terminals and Clamp Leads
Detachable lead sets include both pole clamps and ring terminals that can be swapped without tools. The ring terminals allow a permanent connection to the battery for quick maintenance access. This charger is not for lithium chemistries or for users needing a jump-start function.
How it compares
Measured against everything we stock in Jump Starters, Chargers & Power Packs, at today’s prices. Recalculated every night.
- Price $23.99
- Pricier than about 72% of the 1,744 comparable items (median $14.99).
Specifications
No published specifications for this item yet.
Questions about this item
How do I connect the ring terminals to my vehicle battery and what step is often missed?
Attach the red ring terminal to the positive post and the black ring terminal to the negative post, then select the 6V or 12V setting on the charger before plugging it into mains power.
Which wearable parts will need replacement after repeated use?
The detachable lead sets including the alligator clips and ring terminals are interchangeable and can be swapped out if the connectors become worn or damaged.
What limit appears first when the charger runs continuously at its 3.8A maximum output?
Over-temperature protection activates first under sustained high-current charging, automatically pausing the cycle until the unit cools to a safe operating range.
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