Hi, I have a car that is not used much. I bought a new battery last easter
and moved the car when I took the battery home. About a month later I went
to move the car again and the battery was dead, no ignition light. I cant r
emember how I charged it. The two subsequent times I have tried to move it
the battery has had to be charged and I have used a fancy charger borrowed
from a friend because my bog standard charger cant put charge into it at al
Is the battery likely to be knackered? Is it my fault for leaving it for a
month to loose the charge?
Car batts ever have responded well to being discharged. The op may well
find that something like an alarm or immobiliser is slowly discharging
the battery. If you are leaving it unused for some time best disconnect
yep, all manner of stuff is quietly running when the car is "off".
Mine apparently is aware of this problem and if the battery voltage
gets too low (FSVO "too low") it goes into a really deep sleep and
has to be opened manually, via the one door that actually has a
(hidden) key hole.
Or do as I did when I left my car unused for the last month. A small
solar panel(*) on top of the dash board facing SE, connected to the
battery. Car opened and started without a hint of a flat battery. Not
conclusive, one would need to leave it for a month without the solar
panel and see if it went into deep sleep, that's not going to happen.
(*) Halfords/Maplin £15 15" x 5" ish, 12 V, 1.5 W, 86 mA at max
Well to be fair SOME onboard computers may lose SOME of their
Examples are: car radio anti-theft kicking in and needing the code to be
*some* immobilisers kicking in, and the car won't start
*some* other systems losing their marbles. ISTR that sometimes window
warning lights come on until various resets establish where 'window
"I guess a rattlesnake ain't risponsible fer bein' a rattlesnake, but ah
puts mah heel on um jess the same if'n I catches him around mah chillun".
On 01/09/2016 09:20, The Natural Philosopher wrote:
I was thinking you'd need the radio's code if you disconnected the
battery for that long. OTOH the OP has tested all this by running the
battery right down, and he hasn't complained about the radio not working
or the immobiliser stopping the car working.
On 01/09/2016 09:20, The Natural Philosopher wrote:
Like the Renault I was working on the other week, procedure for
resetting the *fuse box* involved opening the window and turning on the
sidelights (with the door shut ) while re-connecting the battery.
Not jumping through the required hoops left the wipers permanently on
and no headlights... Genius :)
Can itself ran fine though :)
OBC usually refers to a user 'computer' on the car that does things like
MPG and journey times, etc. The ones which control the engine etc more
commonly called an ECU. (electronic control unit)
It's quite possible a flat battery can cause some things to be lost. Maybe
the radio station memory. But a very poor design if it is anything
Many ECUs do 'learn' how the car is driven to some extent. But should
default back to the factory settings if the battery is disconnected for
some time. And quickly learn again. The ECU controlling an auto gearbox
being the obvious one. But in any case updates quickly if you alter your
*A bicycle can't stand alone because it's two tyred.*
Dave Plowman email@example.com London SW
Agreed, I've left all our cars disconnected for up to a year and
the OBC relearns in about 20 minutes. Various ages of car. The only car
which lost it's marbles was a friends GM Oldsmobile, where it was
designed in as an anti theft measure and the reconfigure routine was a
total pain in the butt.
Surely, it would be more correct to say "Onboard should either be one
word or hyphenated", "On-board should either be one word or hyphenated",
or "'On board' should either be one word or hyphenated"?
Not that either of us is in any way being pedantic.
PS: Not forgetting that rule of Usenet concerning correcting grammar.
I've decided that "onboard" (and "killfile" and "killfiled") *do* belong
in Pan's spelling dictionary. They all seem to be more legitimate
additions than the compound words "binge-watch" and "binge-view" that
have made it into the OED fairly recently.
That P.S. looks to me rather like a 'hedge' against Murphy (a minor
'hands on' deity) whose self appointed task seems to be the strict
application of "Sod's Law" at every possible opportunity. :-)
Strictly (and pedantically) speaking, your P.S. has provided Murphy that
opportunity since "concerning correcting grammar" ought to have been more
clearly expressed as "concerning attempts to correct grammatical
However, some may well argue 'common usage' and that no loss of the
intended meaning has ensued as a result, thus making it an acceptable
"colloquialism". Murphy otoh, will always assign "The benefit of the
doubt" in favour of the pedant's interpretation and rule himself "The
Winner" (he *is* a deity after all, even if only a minor one). :-)
 My, my! I *am* taking chances with all these long words. Tempting
fate with regard to Sod's Law. BTW, I'm blaming Pan's spell checker for
any misspellings there may be in this Murphy baiting exercise. :-)
So, it *is* ok after all, for me to add "onboard" to Pan's dictionary
instead of hyphenating "on board"? :-)
I guess Harry's ghostly presence isn't totally useless after all.
Who'd have known? :-)
 That ghastly presence of a killfiled troll which manifests itself
as quotage within other posters' follow ups.
 Yet another compound word that I've added to Pan's dictionary too!
 A more questionable addition to Pan's dictionary but Urban dictionary
and wordnik suggest this is likely to make it into the OED within a
decade or so. I'm just anticipating (and doing my 'bit' to assist) this
"official endorsement". :-)
 That is of course, posters who either aren't aware of the killfile
filter, see Harry as a source of amusement rather than as a festering pit
of toxic misinformation (the opposite of a "Font of Knowledge") or else
simply CBA to utilise the killfile filter to "Send him to Coventry" in
the first place.
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.