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I have the Porsche Charge-O-Matic for the Li battery, and i got it working with the footwell socket process a few months back. Now that I am ready to put my C2S into hiberation, when I follow the process, my charger is 'stuck' in the 2nd light, its not going into the 3rd light for the charging state.
Any idea why?
I have the Porsche Charge-O-Matic for the Li battery, and i got it working with the footwell socket process a few months back. Now that I am ready to put my C2S into hiberation, when I follow the process, my charger is 'stuck' in the 2nd light, its not going into the 3rd light for the charging state.
Any idea why?
How long has it been in the 2nd light state? The 2nd phase is when it pumps energy into the battery so this is where it will spend most time when the battery needs charging taking it to about 90% (8hrs top) 3rd light indicates the "absorption" mode - slowly filling up to 100% and the 4th light is the "trickle/maintenance" mode entered when battery is full.
How long has it been in the 2nd light state? The 2nd phase is when it pumps energy into the battery so this is where it will spend most time when the battery needs charging taking it to about 90% (8hrs top) 3rd light indicates the "absorption" mode - slowly filling up to 100% and the 4th light is the "trickle/maintenance" mode entered when battery is full.
Its in the 2nd light state for about 1-2 hours, then all lights goes off except the green power light. It never gets to the 3rd or 4th light state.
Its in the 2nd light state for about 1-2 hours, then all lights goes off except the green power light. It never gets to the 3rd or 4th light state.
All lights off except the green power lamp indicate that no charging is happening. According to the charge-o-mat manual, if the green light is on (not flashing) then no charging mode has been selected or the power to the charger has been turned off/on? If the green light is flashing, then this suggests that connection to the battery has been interrupted and something is going awry as the footwell socket is being "disconnected" by the car's control system despite there being a powered up charger connected.
Firstly, you're probably aware that there is a sequence that you need to follow in order to ensure the socket remains "active". But, to be sure, can you confirm you are doing the following:
1. Unplug everything from footwell socket
2. Turn on ignition (this activates the footwell socket)
3. Turn off ignition (this leaves socket active and importantly, the socket will now sense whether a charger is plugged in)
4. Plug charger into wall (do not turn on yet) and into car footwell socket
5. Turn on charger at wall and select mode as required (Car / LiPO or Lead Acid)
6. Lock car
Steps 4 & 5 must be completed within around 30 minutes of turning off ignition in step 3.
If you are doing the above (which always works for me), the only other thing I can think of is that the battery itself is low. Has the car been given a run recently, ie is the battery in a reasonable state of charge already? I found that when my battery was close to flat, the above process does not work. However, when I did have this situation, it disconnected the charger at around 30 minutes.
All lights off except the green power lamp indicate that no charging is happening. According to the charge-o-mat manual, if the green light is on (not flashing) then no charging mode has been selected or the power to the charger has been turned off/on? If the green light is flashing, then this suggests that connection to the battery has been interrupted and something is going awry as the footwell socket is being "disconnected" by the car's control system despite there being a powered up charger connected.
Firstly, you're probably aware that there is a sequence that you need to follow in order to ensure the socket remains "active". But, to be sure, can you confirm you are doing the following:
1. Unplug everything from footwell socket
2. Turn on ignition (this activates the footwell socket) WITH KEY INSIDE CAR
3. Turn off ignition (this leaves socket active and importantly, the socket will now sense whether a charger is plugged in) WITH KEY INSIDE CAR
4. Plug charger into wall (do not turn on yet) and into car footwell socket
5. Turn on charger at wall and select mode as required (Car / LiPO or Lead Acid)
6. Lock car
Steps 4 & 5 must be completed within around 30 minutes of turning off ignition in step 3. AND MAKE SURE STEPS 2 AND 3 ARE COMPLETED WITH KEY INSIDE CAR
If you are doing the above (which always works for me), the only other thing I can think of is that the battery itself is low. Has the car been given a run recently, ie is the battery in a reasonable state of charge already? I found that when my battery was close to flat, the above process does not work. However, when I did have this situation, it disconnected the charger at around 30 minutes.
I finally got the 'sequence' correct and the charger was in the maintenance state for 2-3 days. Don't even know what I did differently this time to get it to work, I was following the same steps.
Of course, today I had to take the car out for some scheduled work done, so I'll have to re-do this dance tomorrow. lol
The best way is to connect to the battery and / or posts in the frunk and leave the CTEK pigtail connected. Then you save yourself all the drama and have it easily connected every time.
Great read, helpful, as I was also having problems with the footwell socket timing out. I'm using the CTEK Lithium tender and will be wiring directly to the battery as my long-term solution for my 992.
Another thought, for a couple of cars that I store at a garage away from home where I am not able to check them daily, I use an uninterruptible power supply (UPS) to provide surge protection and continuous power in the event of a brief a/c power outage. Reasonably priced UPS systems with adequate capacity, such as those commonly used with desktop computers or other electronics, are available from APC or other suppliers.
11-22-2021, 02:15 PM
