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| Interlet Member Since: 10 Oct 2011 Location: Norwich Posts: 461   
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Be glad you don't run a light aircraft with conventional top-up lead acid batteries. Most of our fleet now have a new battery every year, due to failing the 82% capacity test required (so the radio still works for sustained time after possible engine failure).
At a cost of about £200 a year per aircraft. 1998 110 300Tdi White Hard Top |
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8th May 2014 10:12pm |
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| ericvv Member Since: 02 Jun 2011 Location: Near the Jet d'Eau Posts: 5816  
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Quite normal, no? With the ignition on, also the preheat plugs will come on and suck quite a bit of juice from the battery without the engine/alternator running yet. Mine then also drops temporarily to abt 12.2V. Best indicator for me of a healty battery is that now that I have installed the Landreiziger headlights loom, my Speakers come on without flickering with just the ignition on, and this even after several weeks of not having used the SVX 
Speaking about batteries, I still remember the pragmatic comments from tatra805 now quite some time ago. Was about the soundest battery recommendation I have read I think. http://www.defender2.net/forum/topic16605-15.html You never actually own a Defender. You merely look after it for the next generation. http://youtu.be/yVRlSsJwD0o https://youtu.be/vmPr3oTHndg https://www.youtube.com/watch?v=_GtzTT9Pdl0 https://www.youtube.com/watch?v=ABqKPz28e6A https://www.youtube.com/watch?v=rLZ49Jce_n0 https://www.youtube.com/watch?v=XvAsz_ilQYU https://www.youtube.com/watch?v=K8tMHiX9lSw https://m.youtube.com/watch?v=dxwjPuHIV7I https://vimeo.com/201482507 https://www.youtube.com/watch?v=ZSixqL0iyHw |
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9th May 2014 3:51am |
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| landy andy Member Since: 15 Feb 2009 Location: Ware, Herts Posts: 5423 
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Two new batteries fitted. Much better. No more warning buzzer each start up.
Andy |
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20th May 2014 1:43pm |
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| Oscar Romeo Member Since: 16 Apr 2014 Location: South Yorks, the pinnacle of all human achievement Posts: 121  
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Just my two peneth,
This is an impossible question to answer due to the fact there are so many factors to take into account. Especially on a land rover that could have massive temperature variation in different parts of the world or bristling with accessories possibly all running from the cranking battery. vehicle alternators are not particular efficient at charging batteries as they simply do not know the state of the battery. Adverc, Sterling marine and other manufacturers have products that asses the battery condition and charge accordingly thus preserving battery life. How does anybody decide when a battery's life has come to an end? Because it wont start a vehicle? How many folk out there have sophisticated battery testers? Ive seem it many times where drivers have replaced a battery and everything is peachy again but when the batteries tested there is little wrong with it. Furred up terminals, poor grounds, low electrolyte, cold weather etc can lead to premature battery replacement. How does anybody determine the age of a battery? How long did sit on the shelf for? Was it left to go flat on some forecourt before you took it home? The list goes on |
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27th May 2014 6:09pm |
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| Cupboard Member Since: 21 Mar 2014 Location: Suffolk Posts: 2971 
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This winter we had to replace a pair of batteries (its 24V) on a 51 plate tractor that were the originals.
We've also just had to replace the battery on an 05 plate machine that is now on its 4th battery. We buy decent batteries. The tractor batteries had a tougher job, were more abused and had a lower Ah rating. Overall Wh rating and CC power in comparison to engine size was smaller too. Swings and roundabouts. |
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27th May 2014 10:16pm |
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