The Baintech DC-DC 40 Amp with Solar MPPT Charger (BTDC-DCS40A) delivers up to 40 A of charge current with dual inputs — accepting power from both a vehicle alternator (12 V or 24 V) and a solar panel simultaneously. Its integrated MPPT solar strategy continuously tracks the maximum power point to extract every available watt from your panels, while a high power-density design achieves up to 95% conversion efficiency in an ultra-thin 194 × 127 × 45 mm chassis built for installations where space is tight.

Engineered for the realities of Australian off-road and touring life, the BTDC-DCS40A carries an IP66 rating for full protection against dust ingress and water jets, making it equally at home under a bonnett, inside a canopy, or in a caravan battery compartment. It supports all common 12 V battery chemistries — Standard Lead Acid, Gel, AGM, Calcium and LiFePO4 — and includes smart alternator compatibility so it works correctly with modern variable-voltage charging systems without triggering alternator fault codes.

• 40 A output with dual solar and alternator input charging
• Integrated 40 A MPPT solar controller for maximum panel harvest
• Compatible with 12 V and 24 V vehicle alternators
• Supports Lead Acid, Gel, AGM, Calcium and LiFePO4 battery types
• Up to 95% conversion efficiency
• IP66 rated — dust-tight and protected against high-pressure water jets
• Smart alternator compatible — safe with variable-voltage charging systems
• Built-in protections: low-voltage, over-voltage, over-temperature and reverse polarity