TecMate TM-275v2 OptiMate Lithium 4s 10A Battery Charger and Maintainer, 10-Step, 12.8V LiFePO4, Dual-Voltage Input

TecMate TM-275v2 OptiMate Lithium 4s 10A Battery Charger and Maintainer, 10-Step, 12.8V LiFePO4, Dual-Voltage Input

• TecMate TM-275v2 is the OptiMate Lithium 4s 10A battery charger and maintainer for 12.8V/13.2V LiFePO4 batteries. It features a sealed, 10-step program with Ampmatic current control, low-volt start from 0.5V, and TUNE power-supply mode for diagnostics, supporting performance vehicles and deep-cycle applications.
• Features:
  • 10-step lithium program automatically charges, tests, and maintains 12.8V/13.2V LiFePO4 batteries for long-term performance
  • Ampmatic control adjusts current up to 10A to match battery size and condition for faster, safer charging
  • Low-volt save starts from 0.5V to recover deeply discharged batteries protected by a BMS
  • TUNE mode provides a stabilized power supply for diagnostics and programming during service
  • Sealed, weather-resistant case with spark suppression and automatic shutoff for shop-safe operation
• Includes:
  • OptiMate Lithium 4s 10A charger (TM-275v2)
  • Weatherproof battery lead with SAE connector
  • Battery clip lead set with SAE connector
• Specifications:
  • Manufacturer: TecMate
  • Part Number: TM-275v2
  • Battery Chemistry: LiFePO4/LFP, 4s, 12.8V/13.2V
  • Charge Current: Up to 10A (Ampmatic)
  • Battery Capacity Range: Approximately 3 to 120 Ah
  • Input Power: 100 to 240 V, 50/60 Hz
  • Programs / Modes: 10-step automatic, Low-Volt Save, TUNE power supply
  • Protection: Spark suppressed, reverse-polarity and short-circuit protection, sealed housing
  • Connections: SAE output with clip set and permanent lead
  • System Compatibility / Application: Designed for charging, maintaining, and recovering 12.8V LiFePO4 batteries in automotive, motorsport, marine, and powersport systems
• The OptiMate Lithium 4s 10A Battery Charger and Maintainer can also be referred to as lithium battery charger, LiFePO4 charger maintainer, 12.8V lithium charger, 10A lithium charger, and lithium battery power supply.

TecMate develops OptiMate battery chargers and maintainers for professional and enthusiast use across automotive, powersport, marine, and industrial markets, with a focus on battery diagnostics, recovery, and long-term maintenance.

Q: What batteries is TM-275v2 designed for?
A: It is designed for 12.8V/13.2V LiFePO4 batteries and supports capacities from about 3 to 120 Ah. Verify your battery’s chemistry and capacity before charging.

Q: Can it recover a deeply discharged lithium battery?
A: Yes. The Low-Volt Save function can start from about 0.5V to recover batteries whose BMS has shut down, then continue with the automatic charge program.

Q: What does TUNE mode do?
A: TUNE mode provides a stabilized power supply for diagnostics or programming, allowing you to power on-board electronics without discharging the battery during service.