 | Home > Maintenance & Modifications > Battery dead but very warm- what do i do? |
 
|
|
|
| Venomator Member Since: 25 Aug 2014 Location: Peterborough Posts: 2087  
|
Yes, of course, sorry just looked at the dial without the cables plugged in...
 Rog... 
The GREEN One... MY2016 Urban Truck Build Thread - http://www.defender2.net/forum/topic40548....al[/color] |
||
22nd Dec 2014 4:41pm |
|
| shaggydog Member Since: 12 Aug 2012 Location: Kent Posts: 3347 
|
Ok were getting somewhere.
At first connection there was a spark and it read 0.35 this then dropped down to 0.06-0.05. I turned on my rear work light to get a comparison and it shot up to 5.55 but then dropped back down to 0.05 and stayed steady with everything off. However, if I left everything disconnected and then turned on the light to drain any residual and then reconnected there was a spark and it shot back to 0.35 then dropped back to 0.05 - normal or something up? Running Restoration Thread http://www.defender2.net/forum/post323197.html#323197 Self confessed mileage hunter  |
||
|
22nd Dec 2014 4:42pm |
|
| Rickydodah Member Since: 14 Jul 2014 Location: East Sussex Posts: 1091 |
As Munch says the Red lead needs to go in the left hand 10A hole, if by chance it's drawing a lot of amps then you'll possible fry the multimeter otherwise. You may just get a more accurate reading if you connect meter between the positive terminal and lead, just be very careful not to induce a short, though it's unlikely to be much different.
 I started with nothing and still have most of it left! |
||
|
22nd Dec 2014 4:45pm |
|
| munch90 Member Since: 26 Oct 2013 Location: guildford Posts: 3558 
|
0.35 so 1/3 of a amp and then drops more , sounds ok (if your reading it right
 )
I take it your work light is not led and 55-60w bulb then it should be roughly the 5.5 amp reading you got ok again sometimes you get a bit of a jump to begin with then its what it settles to that matters sometimes its handy to have a couple of spare fuses for inside the meter as its easy to blow then (we have all done it  ) normally use the small glass radio style fusesLast edited by munch90 on 22nd Dec 2014 4:52pm. Edited 1 time in total |
||
|
22nd Dec 2014 4:47pm |
|
| Rickydodah Member Since: 14 Jul 2014 Location: East Sussex Posts: 1091 |
0.35amp is 4.2 watt, so not a lot, was the interior light on at the time? The 5.55 draw is okay if there's around a 60watt bulb in the lamp I started with nothing and still have most of it left! |
||
|
22nd Dec 2014 4:51pm |
|
| shaggydog Member Since: 12 Aug 2012 Location: Kent Posts: 3347
|
0.35 sounds fine to me (it didn't say syntax error so I assume so!)
Work light is a H3 Filament Bulb so no its non Led
Everything else apart from the clock and tracker was off (including interior lights) Running Restoration Thread http://www.defender2.net/forum/post323197.html#323197 Self confessed mileage hunter |
||
|
22nd Dec 2014 4:53pm |
|
| shaggydog Member Since: 12 Aug 2012 Location: Kent Posts: 3347
|
Ok so when everything is off it seems it is in fact all off.
So, does this put the failure of the old battery solely down to the battery itself? In which case new battery has solved all the issues and we are now sorted
Or does it mean we have now eliminated one thing off the list and now have another thing to look at, in which case what is it and how can I check it? Also I owe lots of people lots of beers  Running Restoration Thread http://www.defender2.net/forum/post323197.html#323197
Self confessed mileage hunter |
||
|
22nd Dec 2014 5:00pm |
|
| munch90 Member Since: 26 Oct 2013 Location: guildford Posts: 3558
|
don't temp fate with words like "has solved all the issues"
but yes seems it should be right
sorry if I talked you into buying a mutlimeter , but seen it lots of times battery replaced for no reason when something else was wrong , I prefer to know its right when it goes out Last edited by munch90 on 22nd Dec 2014 5:11pm. Edited 1 time in total |
||
|
22nd Dec 2014 5:05pm |
|
| Rickydodah Member Since: 14 Jul 2014 Location: East Sussex Posts: 1091 |
The only other thing I can think of is going back to the alternator, you could try testing the resistance of the coils and the wiring, if the diode fails then it wil draw current back from the battery with the engine off. I have come across this before but never as an intermittent fault. Just a thought, fingers crossed.
 I started with nothing and still have most of it left! |
||
|
22nd Dec 2014 5:10pm |
|
| shaggydog Member Since: 12 Aug 2012 Location: Kent Posts: 3347
|
 your right I walked straight into that one didn't I 
Still, more to learn next time something happens.
The old battery, as I still have it on charge, if I leave it on charge overnight then unplug it and measure the voltage, then leave it all day and then re test it will that determine the old battery to be usable as a spare or dead? Running Restoration Thread http://www.defender2.net/forum/post323197.html#323197 Self confessed mileage hunter |
||
|
22nd Dec 2014 5:14pm |
|
| munch90 Member Since: 26 Oct 2013 Location: guildford Posts: 3558
|
don't think ive ever seen alternator intermittent fault either , also if the alternator fails this way sometimes in the dark you can see the battery light on the dash glowing faintly even when all off and locked etc
|
||
|
22nd Dec 2014 5:14pm |
|
| shaggydog Member Since: 12 Aug 2012 Location: Kent Posts: 3347
|
Not at all, I have been meaning to buy one for a long time and who doesn't love buying new tools
I'm not sure I have coils as its a diesel But could stand corrected! How would I test that?
Battery light goes out after a few seconds and then stays firmly extinguished so take that as a good sign Running Restoration Thread http://www.defender2.net/forum/post323197.html#323197
Self confessed mileage hunter |
||
|
22nd Dec 2014 5:22pm |
|
| dorsetsmith Member Since: 30 Oct 2011 Location: South West Posts: 4554 |
Battery light goes out after a few seconds and then stays firmly extinguished so take that as a good sign DC ALT is working
|
||
|
22nd Dec 2014 6:26pm |
|
| munch90 Member Since: 26 Oct 2013 Location: guildford Posts: 3558
|
What i ment was sometimes if the alternator is faulty in a certain way then the dash battery light can glow faintly even when engine not running , ign off and you can only see it at night in the dark its that faint
|
||
|
22nd Dec 2014 6:38pm |
|
|
|
| All times are GMT |
< Previous Topic | Next Topic > |
Posting Rules
|
Site Copyright © 2006-2024 Futuranet Ltd & Martin Lewis
