122-T7Y5Q-12

All
1401
Equipment Information
Recommended Use of a Battery Charger
Attention:
Service Managers and Service Technicians
Vehicle Type:
All current and future vehicles
Model Year:
2009 - present
USA
Binder - Equipment Information
Replaces bulletin dated 8/11/2014.
Information:	
This document updates information previously published in EQ 1105, EQ 1105, and EQ 1401.
		To provide stable voltage and sufficient current throughout certain service operations, you should connect
the vehicle to a battery charger (sometimes referred to as a power supply). However, you may experience
ECU programming and coding issues if the chosen battery charger has insufficient power.
		Many workshop manuals currently advise use of a battery charger with a 40 or 70 A current rating. However,
with the increasing current requirements of modern Porsche vehicles, we recommend a battery charger
capable of producing a minimum current of 90 A.
		Specific Notes
		
Modern series-production vehicles. Since the generation of G1 Panamera, E2 Cayenne, and 9x1 sports
cars, most Porsche series-production vehicles use an AGM starter battery. (The exception are vehicles coded for a Li-ion or “lightweight” starter battery.) For AGM batteries, set the battery charger to a current of 90
A and a fixed voltage between 13.5 and 14.5 V.
		Use of battery chargers during ECU programming. Specifically for workshop operations requiring the
programming of control modules, we recommend to set the battery charger to a “flash programming” mode
with fixed voltage set between 13.5 and 14.5 V.
		Verification of battery voltage during charging. To avoid clamping or connection issues with the battery
charger, we recommend that you verify battery voltage by means of the PIWIS tester actual values or by
using the voltage display in the instrument cluster.
		Notes about the 918. The 918 Spyder uses a 12 V Li-Ion battery. As in previous documents, we recommend use of a regulated 12 V DC power supply capable of at least 70 A, set to “flash programming” mode.
The charging voltage should be set between 13.5 and 13.8 V. Failure to observe this requirement will damage the internal electronics of the lithium ion battery,
Dr. Ing. h.c. F. Porsche AG is the owner of numerous trademarks, both registered and unregistered, including without limitation the Porsche Crest®, Porsche®, Boxster®, Carrera®, Cayenne®,
Cayman®, Macan®, Panamera®, Speedster®, Spyder®, Tiptronic®, VarioCam®, PCM®, PDK®, 911®, RS®, 4S®, 718®, 918 Spyder®, FOUR UNCOMPROMISED®, and the model numbers and
distinctive shapes of the Porsche automobiles such as, the federally registered 911 and Boxster automobiles. The third party trademarks contained herein are the properties of their respective owners.
Porsche Cars North America, Inc. believes the specifications to be correct at the time of printing. However, specifications, standard equipment and options are subject to change without notice. Some
options may be unavailable when a car is built. Some vehicles may be shown with non-U.S. equipment. Please ask your authorized Porsche dealer for advice concerning the current availability of options
and verify the optional equipment that you ordered. Porsche recommends seat belt usage and observance of traffic laws at all times.
©2017 Porsche Cars North America, Inc.
AfterSales
November 6, 2017
Page 1 of 1