TECMATE Battery Charger - Solar - Duo TM522-D2

Dead batteries are a racer's nightmare—especially when your vehicle sits in storage or between seasons. The TECMATE Duo TM522-D2 keeps your 12V battery in peak condition around the clock, combining solar charging during the day with intelligent monitoring at night, so you'll never turn the key to a dead cell again. With its ability to resurrect batteries as low as 4V and support for standard, AGM, and lithium LFP chemistries, this is essential maintenance equipment for any serious enthusiast or professional team.

The real advantage here is placement flexibility—mount the solar panel where the sun hits and position the charger display right at your battery, giving you immediate, real-time battery state information every 3 seconds. No guesswork, no surprises when race day arrives.

• Charges 12V batteries via solar
• Monitors battery health nightly
• Recovers batteries from 4V
• Pulse-action charging technology
• 124" maximum panel-to-battery distance
• Supports STD, AGM, lithium LFP
• Real-time status display
• Updates every 3 seconds
• Ultra-low monitor mode draw
• Less than 0.5mA standby current
• Automatic charge mode activation
• MPN: TM522-D2