9 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHDead battery, car charger freaks my 996
Leading reported evidence
Clean dc current
Suggestion or failed attempt
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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Discussions that contain suggestions
1
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Suggestion
Battery chargers DO NOT put out a clean DC current, it is actually AC current with the neg or bottom part of the sine wave chopped off with diodes.
Leading evidence: 'Clean dc current' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Clean dc current' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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1
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Suggestion
Try to disconnect the battery from the car before charging it.
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Suggestion
You should disconnect the neg lead from the battery before you charge the battery.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
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Suggestion · Original poster
The red was on the positive and black on the negative terminal and it freaked regardless of the volt setting on the charger.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
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0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
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9 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
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Generation: 20261026T220748Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
I went to start my '99 996 C2 and the battery was COMPLETELY dead. When I hooked up a car charger, the thing lit up like a carnival. Marker lights blinking and clicking, dash lights blinking, bells ringing....all that and no action when I tried to turn it over. The red was on the positive and black on the negative terminal and it freaked regardless of the volt setting on the charger. What did I do wrong??
If your charger is consumer grade only (1~10amps) it won't have enough power to start the car. Try to disconnect the battery from the car before charging it. Wait till it's fully charged before trying again. Or use another car to jump start it.
if it freaked when you tried to start it - that is what mine does when the battery isn't completely dead but not enough amps to start it. If I use the charger - I have to leave it on for a few hours. The $79 portable jump starter/FM radio I got off Amazon works great to start it though
You should never try to start the car with the charger attached. You should disconnect the neg lead from the battery before you charge the battery. Battery chargers DO NOT put out a clean DC current, it is actually AC current with the neg or bottom part of the sine wave chopped off with diodes. This isnt good for the electronics of the car.
OK, guys, don't jump all over me but...
>a dead battery is generally not recoverable via re-charging. Buy a new one.
>best not to "quick charge" a low battery; use a trickle charger to avoid any risks to sensitive (say, expensive) German electronics.
>any name brand trickle charger will suffice, but a genuine Porsche trickle charger will charge through the cigarette lighter receptacle on post-MY1996 p-cars...very convenient and zero risk.
relinuca
