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discomog



Member Since: 09 May 2015
Location: Notts/Lincs Border
Posts: 2495
United Kingdom 2015 Defender 90 Puma 2.2 XS CSW Santorini Black
Ctek Charger/conditioner - Not impressed
I've used a couple of Ctek mxs 5.0 chargers over recent years for vehicles that are not used as regularly as maybe they should. On attempting to start one of them yesterday all I got was a click from the starter solenoid. On checking the battery it was reading 12.6 volts with no load on it, as soon as I switched on the headlamps it was reading 5.5 volts indicating a duff battery.

My question is - the Ctek charger showed the battery was OK with all 8 lights on, indicating the battery was fully charged and on "maintenance charge" why did the Ctek charger/conditioner not detect a faulty battery? Can anyone explain the reason why?



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Post #710690 4th Jun 2018 9:02am
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windy81



Member Since: 14 Mar 2018
Location: North Wales
Posts: 311
Wales 1992 Defender 90 200 Tdi HT Firenze Red
Because a Ctek charger is not a battery tester.
Post #710692 4th Jun 2018 9:05am
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Balvaig



Member Since: 19 Feb 2016
Location: Fife
Posts: 719
Scotland 2016 Defender 90 Puma 2.2 Landmark LE Corris Grey
^^
The charger is working as intended. It only reports an error if the voltage after steps 1-4 drops to 12v. You clearly had more volts than this so no error reported.
It might be worth trying to recharge the battery in Recond mode before buying a new battery.
Post #710706 4th Jun 2018 11:34am
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Laurie



Member Since: 22 Feb 2008
Location: Sussex, England
Posts: 2897
England 2005 Defender 90 Td5 XS CSW Bonatti Grey
Leave the charger connected and momentarily switch the headlights on or the starter.
Check the charger report afterwards. 
Post #710707 4th Jun 2018 12:16pm
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bear100



Member Since: 22 Mar 2010
Location: South Wales
Posts: 1867
Wales 2010 Defender 110 Puma 2.4 USW Santorini Black
Put the charger in recon mode over night, it will bring your battery up to better than new! Then use the maintenance function Thumbs Up 2016 Range Rover Autobiography 4.4 TDV8
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Post #710719 4th Jun 2018 1:34pm
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