OptiMate 3 x 4 BANK SILVER series: 7-step 12V 0.8A sealed battery saving charger & maintainer

Featuring a smart 7-step charging routine, the OptiMate 3 X4 recovers deeply discharged batteries from as low as 2 V, desulfates neglected cells, performs bulk and absorption charging, optimization, diagnostic testing, and then shifts to continuous maintenance mode. Its dual-mode functionality allows you to maintain up to four batteries simultaneously or dedicate full power to fewer units while monitoring others.

Built to endure tough environments, the charger is fully weatherproof (IP54), operates between –40 °C and +40 °C, and consumes less than 0.5 W in standby. Safety features include reverse-polarity protection, spark suppression, and automatic shut-off in fault conditions. The unit’s compact, wall-mountable design includes integrated cable storage for convenience.

Key Specifications

• Battery Chemistry: 12 V lead-acid (flooded, AGM, GEL, spiral, EFB)
  
• Battery Capacity Range: 2–50 Ah per bank
  
• Number of Banks: 4 independent charging outputs
  
• Charge Current: 0.8 A total shared across banks
  
• Recovery Voltage: From 2 V
  
• Charging Program: 7-step automatic cycle (Recovery, Desulfation, Bulk, Absorption, Optimize, Test, Maintenance)
  
• Float Maintenance: Alternating test and float pulses to keep batteries full
  
• Operating Temperature: –40 °C to +40 °C
  
• Standby Power Draw: < 0.5 W
  
• Enclosure Rating: IP54 weatherproof, wall-mountable
  
• Input Power: 100–240 VAC, 50–60 Hz
  
• Safety Protections: Spark suppression, reverse polarity protection, auto shut-off
  
• Cables Included: Four 2 m DC output leads with SAE connectors and included battery clips
  

• Datasheet

• Trickle Charger vs Regular Charger: What’s the Real Difference?
• A Guide to Choosing the Right Battery Charger