Check the listing for details. 12/24V MPPT Solar Charge Controller 40A. Condition: New. Listed at 169.31 USD. This 40A Input 12/24V Solar MPPT Charger allows you to get more power from your existing panels, or alternatively reduce the overall required panel wattage for new systems. The charger utilises Maximum Power Point Tracking (MPPT) circuitry to provide up to 20% additional charge energy than conventional regulators. It is suitable for permanent installations of lead acid, gel battery and lithium chemistry solar panel systems. LEDs are provided to indicate working status - solar charge ON, load ON and battery level. Suitable for 12V or 24V systems, the charger automatically detects the connected battery voltage. Ideally suited to vehicles and simple remote power systems such as pumping stations, electric fences, remote lighting, marine applications etc. Warning: Do not set up using a common earth wiring configuration.