TecMate TM522-D2 OptiMate Solar DUO 20W Solar Battery Charger and Maintainer, 12V/12.8V, 6-Step

TecMate TM522-D2 OptiMate Solar DUO 20W Solar Battery Charger and Maintainer, 12V/12.8V, 6-Step

• The TecMate OptiMate Solar DUO TM522-D2 is a 20W solar-powered battery charger and maintainer for 12V lead-acid and 12.8V/13.2V lithium (LFP) batteries. It uses a fully automatic 6-step smart charge program that charges during the day and monitors battery charge level at night, and is suited for ATVs, motorcycles, jet skis, boats, cars, and agricultural equipment.
• Features:
  • Can recover flat batteries from as low as 4V.
  • Smart charge controller automatically adjusts charging based on battery type and condition.
  • Delivers 1.67A maximum average current from the 20W solar panel, with 3.5A pulse current.
  • Suitable for indoor or outdoor use down to -4°F (-20°C).
  • Compatible with STD, AGM, and GEL 12V batteries from 2-240Ah, and 12.8V/13.2V Lithium LFP batteries.
  • Switches to Monitor Mode to display battery charge level when solar power is unavailable.
  • Full electronic protection allows the unit to be left connected continuously.
• Includes:
  • 20W Solar Panel
  • Weatherproof Battery Lead (O-01)
  • Standard Battery Clip Set (O-04)
• Compatible Applications:
  • ATVs
  • Motorcycles
  • Jet Skis
  • Boats
  • Cars
  • Agricultural Equipment
• Application Notes:
  • This charger is suitable only for 4-series-cell Lithium Ferrous Phosphate (LFP) or Lithium Iron Phosphate batteries. Do not attempt to charge any other type of lithium battery with this unit.
  • Connection order: solar panel cable to controller input, controller output cable to battery lead or battery clips, then to the battery.
  • Supplied specifications list the model number as TM-522-2, while the product title references TM522-D2; both appear in the supplied source and are noted here for clarity.
• Specifications:
  • Manufacturer: TecMate
  • Brand: OptiMate
  • Part Number: TM522-D2
  • Model Number (per spec table): TM-522-2
  • Product Type: Solar Battery Charger and Maintainer
  • Wattage: 20 Watts
  • Charging Amps: 1.67A (Max Average), 3.5A Pulse
  • Voltage Compatibility: 12V Lead-Acid, 12.8V/13.2V Lithium LFP
  • Battery Capacity Range: 2-240 Ah (STD/AGM/GEL)
  • Charge Steps: 6-Step
  • Operating Temperature: -4°F (-20°C) and above
  • Item Weight: 4.98 lbs.
  • Package Dimensions: 22.76" x 15.55" x 1.77"
• This item is also often referred to as a solar battery maintainer, solar trickle charger, OptiMate solar charger, 12V solar battery tender, and TecMate solar DUO charger.

TecMate manufactures battery chargers, maintainers, and testers for motorcycle, ATV, marine, automotive, and powersports batteries under the OptiMate brand.

Q: What battery types can the OptiMate Solar DUO charge?
A: It charges STD, AGM, and GEL 12V lead-acid batteries as well as 12.8V/13.2V Lithium LFP batteries.

Q: What battery capacity range is this charger suited for?
A: It is suited for 12V batteries from 2-240Ah.

Q: Can this charger be left connected to the battery long-term?
A: Yes, it includes full electronic protection and is safe to leave connected continuously.

Q: What components are included with the charger?
A: It includes a 20W solar panel, a weatherproof battery lead, and a standard battery clip set.