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Giantz 40A MPPT Solar Charge Controller 12V–48V

A poor-quality charge controller wastes solar energy and shortens your battery's life. The Giantz 40A MPPT Solar Charge Controller delivers up to 99% tracking efficiency and supports 12V to 48V systems — keeping your batteries charged properly and protected whether you're camping, caravanning or running an off-grid setup.

Regular price $136.95
Regular price $154.81 Sale price $136.95
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Details

Off-grid power setups live or die by how well the charge controller manages the relationship between your solar panels and your battery bank. Overcharge a battery too many times and you'll find yourself replacing it far sooner than you should — a costly problem when you're deep in the bush or mid-trip.

The Giantz 40A MPPT Solar Charge Controller uses MPPT (Maximum Power Point Tracking) technology to extract up to 99% of the available power from your panels and convert it with up to 97% charging efficiency. That means more energy reaching your batteries and less being wasted as heat — a real advantage on cloudy days or when panel output is variable.

Multi-stage charging keeps your batteries healthier for longer by adjusting the charge profile based on the battery's state, rather than dumping current in at a flat rate. It's compatible with GEL, sealed (SLD), flooded (FLD), user-defined and lithium battery types, so it works with most existing setups without fuss.

An iron case heat sink and active cooling fan handle thermal management during heavy use, while RS485 and RJ45 ports allow for communication with monitoring systems. The backlit LCD display gives you a clear read of system status at a glance — whether you're checking it in bright sunlight or at dusk.

Specifications

Brand: Giantz
Rated charge current: 40A
System voltage: 12V / 24V / 36V / 48V (auto detection)
Max PV input power: 12V / 520W, 24V / 1040W, 36V / 1560W, 48V / 2080W
Max PV input voltage: 138V
MPPT tracking efficiency: up to 99% (as listed by supplier)
Max charging efficiency: up to 97% (as listed by supplier)
Battery compatibility: GEL, SLD (sealed), FLD (flooded), USR (user-defined), Lithium
Display: Backlit LCD
Communication ports: RS485, RJ45
Cooling: Iron case heat sink and cooling fan
Protection: Overcharge, reverse polarity, overload, overheat

What’s Included

1 x Giantz 40A MPPT Solar Charge Controller
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