Porsche Charge-o-mat Pro

Charge every 12V starter battery fitted to a Porsche. The lead-acid program covers all WET, MF, Ca/Ca, AGM, and GEL batteries from 1.2 Ah up to 160 Ah, which includes standard batteries in the 911, 718, Cayenne, Macan, Panamera, and Taycan. The lithium-ion program covers Porsche 12V LiFePO4 lightweight batteries from 5 to 120 Ah, including the optional lightweight battery fitted to selected 911 GT models.

No. The Charge-o-mat Pro is designed exclusively for 12V starter batteries. Use the Porsche Wallbox or the Porsche Mobile Charger to charge the high-voltage traction battery of a Panamera E-Hybrid, Cayenne E-Hybrid, Macan Electric, or Taycan. The Charge-o-mat Pro can still be used on the 12V starter battery in those same vehicles.

Plug the charge cable into your Porsche's 12V accessory socket (the cigarette lighter socket in most models), plug the mains cable into a standard UK three-pin socket, press the MODE button to select the correct program for your battery, and lock the vehicle. The charger then runs the full cycle automatically. For Porsches without a cigarette lighter socket, use the optional clamp adapter available through your Porsche Partner.

Your Porsche's 12V accessory socket automatically deactivates after 30 minutes without a load to protect the vehicle battery. If the car has been standing for longer than that, cycle the ignition on and off once before you connect the charger. This wakes the socket up and lets the charge cycle begin. If a low-battery warning is already showing in the vehicle, the socket will still switch off after 30 minutes even during charging, and you should switch to the optional clamp adapter to connect directly to the battery.

Yes, and this is exactly what the charger is designed for. Once the battery reaches a full state of charge, the Charge-o-mat Pro switches automatically to maintenance mode (Float and Pulse) and holds the battery at 95-100 percent capacity indefinitely without overcharging. This makes it ideal for classic, weekend, track, or seasonally stored Porsches. The unit has a very low back-current drain of less than 1 Ah per month, so it will not discharge the battery even if the mains supply is disconnected for a period.

Lead-acid and lithium-ion batteries need different charging voltages and different charge profiles. The lead-acid program targets 14.4 or 14.7 V and includes a Desulphation stage that removes sulphate crystals from the lead plates to restore lost capacity. The lithium-ion program targets 13.6 V and includes a Wake Up stage that can reactivate cells sitting below their under-voltage protection threshold. Selecting the wrong program can shorten battery life significantly, so always check which battery your Porsche has before pressing MODE.

Yes, in most cases. Porsche lithium-ion batteries include under-voltage protection that disconnects the battery from the vehicle when it drops too low, and this normally prevents chargers from detecting it. The Charge-o-mat Pro includes a dedicated Wake Up function that overrides the protection and reactivates the battery. Select the lithium-ion program, hold the MODE button for 10 seconds until one of the indicator lamps lights up, and the charge cycle begins.

Charging time depends on battery capacity and starting state of charge. As a guide, an empty 60 Ah lead-acid battery reaches 80 percent charge in around 12 hours, and an empty 60 Ah lithium-ion battery reaches 90 percent in around 16 hours. Smaller batteries charge proportionally faster. If the charger has not switched to maintenance mode within 50 hours (24 hours for lithium-ion), this indicates a fault and the charger should be disconnected.

Yes, provided the garage is dry and well ventilated. The charger carries an IP20 rating for indoor use only, so it must not be exposed to rain, snow, or wet floors. Never cover the unit during charging, and never place the charger directly on top of the battery. Reverse polarity protection, short-circuit protection, and automatic output reduction at high ambient temperatures all safeguard the battery, the charger, and the vehicle.

The delivery includes the Charge-o-mat Pro control unit with its integrated charge cable for the 12V accessory socket, a UK three-pin (BS 1363) mains cable, and the operating instructions. The optional clamp adapter for vehicles without a cigarette lighter socket, or for charging a dismounted battery, is available separately via your Porsche Partner or Porsche Tequipment.