13 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHBattery life with ignition on and not running?
Leading reported evidence
Recommend / warn
Suggestion or failed attempt
No successful repair reported for this finding.
0
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0
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1
Discussions
Read evidence and context
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Suggestion · Original poster
They recommend/ warn to 'connect vehicle to a stabilised battery'.
Leading evidence: 'Recommend / warn' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Recommend / warn' (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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Recommend plugging in a booster pac or a battery charger
Suggestion or failed attempt
No successful repair reported for this finding.
0
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0
Unsuccessful attempts
1
Discussions
Read evidence and context
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Suggestion
In that case, I highly recommend plugging in a booster pac or a battery charger with "supply mode" to the cigerette lighter socket.
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Suggestion
i am from the old school and do not like running a battery charger with the key on.to-days electronics are much better protected but they still do not like volt/amp spikes
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Suggestion
in your case i would run a low amp charger.....not a shop 20 amp monster.
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0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
i am from the old school and do not like running a battery charger with the key on.to-days electronics are much better protected but they still do not like volt/amp spikes
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13 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
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Generation: 20261027T140027Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Random question, does anyone know how long the battery will last with key in ignition and turned to position 1, ie all lights on dash on?
No interior lights on, no fan, no radio, just dash lights...
Thanks.
a small low amp charger i guess would be okay. i am from the old school and do not like running a battery charger with the key on.to-days electronics are much better protected but they still do not like volt/amp spikes
I do not know how long a typical battery will last with the key on and the engine off with no other electrical loads, but I can tell you the electrical load is pretty high even in this case.
One hour should be ok though provided the battery is in good shape.
But I have to ask why you need to connect an OBD2 reader to the car for one hour with the engine off?
ECU download, manufacturer says this may take up to 30min with reader connected to the OBD2 port and ignition must be in position 1. They recommend/ warn to 'connect vehicle to a stabilised battery'.
in your case i would run a low amp charger.....not a shop 20 amp monster. with GM cars installing a tune [slang term was "tuna ina can" ] it was a have to that your battery was up to par and a charger installed. going below a voltage threshold would require the ECM to be re-set to factory defaults
