Member Since: 02 Jul 2014
Location: Sunny Devon
Posts: 1759
Battery failing
Hi all a little help needed please this is one might be for one of our resident expert auto electricians ,had a new battery fitted 18 months ago but it was never brilliant and has been marginal at best ,had the alternator replaced as it was not pumping out enough current ,but even after a good spell on a Ctek it losses its charge over a couple weeks .I took my car to my brother garage for an MOT and it disgraced its self leaving him with a flat battery ,I asked him to drop test it he said that fecked and that new one needed ,he told me that all that happens when it is charge it is only charging a small part of the battery and the remainder of it will no longer accept a charge ,well that's what I think he said have I got it right ? Land Rover 90 - deceased
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Discovery 4 2013
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18th Jun 2016 3:56 pm
tayaste
Member Since: 15 May 2013
Location: Chester
Posts: 7633
Does it lose its charge after the ctek, on or off the vehicle?
18th Jun 2016 4:17 pm
mz mini
Member Since: 02 Jul 2014
Location: Sunny Devon
Posts: 1759
On the Disco, just put another battery on car I will wait to see if that will hold a charge .The drop test indicates that the battery on the car will not take or hold much of a charge Land Rover 90 - deceased
Discovery 3 - deceased
Discovery 4 2013
Mini Cooper S 1964 Mk1 - International Rally winner red & white
Mini Cooper s 1964 Mk1 - Road Rally champion green & white
Mini Cooper S 1971 Mk3 - original and unrestored
Porsche 911 997
Porsche Boxster 3.4S
VW Polo 1.2
Citroen Xsara Picasso - shed/run around
just what make & type of battery did you fit ?BREXIT - done properly.
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What came first - battery replaced then alternator ?. Reason for asking is that faulty alternator would either take down the battery either completely or partially as happened with myself . Thought I had got away with it as could charge the battery off vehicle and it would hold charge no problem however once in vehicle it would die after a few days which wrongly had me believe it was a parasitic drain . Finally discovered that the battery was down on capacity by 50% and also cranking capability was only 40% - battery changed and it's not skipped a beat since .
Hope that helps
20th Jun 2016 8:20 am
mz mini
Member Since: 02 Jul 2014
Location: Sunny Devon
Posts: 1759
Sorry for not getting back sooner BL I fitted a Lion battery, a standard run of the mill job pretty crap TBH
Hi Simoniz bingo that is it exactly with what has happened to mine , put new battery on but never really packed punch always on the slow side fitted new alternator as old one was putting out a low charge still had issues with flat battery .I have now put the old one back on and it seems to have kept a charge and ever time since that when I started the disco has spun the starter over with ease ,so crossed fingers got it sorted this time .I guess that the battery and got into some type of charge cycle and as you say has only 40-50% of its original performance Land Rover 90 - deceased
Discovery 3 - deceased
Discovery 4 2013
Mini Cooper S 1964 Mk1 - International Rally winner red & white
Mini Cooper s 1964 Mk1 - Road Rally champion green & white
Mini Cooper S 1971 Mk3 - original and unrestored
Porsche 911 997
Porsche Boxster 3.4S
VW Polo 1.2
Citroen Xsara Picasso - shed/run around
20th Jun 2016 5:57 pm
JMack
Member Since: 02 Aug 2014
Location: Edinburgh
Posts: 1517
I had a Lion battery, utter rubbish. Kept draining with just opening doors etc. Almost left me stranded once and ended up keeping a jump-pack with me and jump leads at all times.
It was new when I bought the D3 but after continued problems I bought the one always recommended on here and have had no problems with it at all.
Noticed that the capacity and cranking amps were a fair bit higher on the new one, despite the Lion one being recommended for the D3.
20th Jun 2016 6:05 pm
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
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,he told me that all that happens when it is charge it is only charging a small part of the battery and the remainder of it will no longer accept a charge ,well that's what I think he said have I got it right ? 
