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kmac

Member Since: 07 Oct 2009
Location: Middlesex
Posts: 1294

2009 Defender 110 Puma 2.4 USW Santorini Black

New battery does not go into trickle mode with Ctek

Finally replaced my factory provided starter battery with a Yuasa YBX5019

When it arrived I set it to charge in the house with the Ctek MS 5.0

Left it for a week but it never went past stage 7, green battery to stage 8 - trickle charge

Anyone know why this is the case?

24th Jul 2021 11:24pm

kmac

Member Since: 07 Oct 2009
Location: Middlesex
Posts: 1294

Internet reading suggests it may need up to 10 days on stage 7 before going to stage 8

25th Jul 2021 7:51am

Supacat

Member Since: 16 Oct 2012
Location: West Yorkshire
Posts: 11018

2013 Defender 110 Puma 2.2 XS DCPU Keswick Green

Doesn't sound like a problem - Stage 7 is "Fully Charged".

Stage 8 is just gives a pulse when necessary to keep the battery fully charged - it may well be doing it and then dropping back to Stage 7 whilst you are not watching.

25th Jul 2021 9:27am

kmac

Member Since: 07 Oct 2009
Location: Middlesex
Posts: 1294

Thanks Supacat

25th Jul 2021 10:23pm

BogMonster

Member Since: 05 Feb 2008
Location: Stanley
Posts: 389

2015 Defender 110 Puma 2.2 USW Corris Grey

Oddly I find that my Yuasa batteries often seem to be 'stuck' on Stage 4 while they are in the vehicle. I wondered if it was the slight current drain (25ma) from the Lodar remote receiver, clock etc, that just keeps the voltage slightly down and fools the charger. When you check it with a meter the battery sits at 14.8V on the charger. ---
2006 Defender 110 SW 300Tdi • 2011 Ford Ranger XLT crewcab • 2015 Defender 110 Station Wagon Utility TDCi

27th Jul 2021 10:09am

kmac

Member Since: 07 Oct 2009
Location: Middlesex
Posts: 1294

Don't measure the battery voltage with the charger on - it is bound to be high.

Disconnect charger and wait a little while then check voltage at battery. Should be about 12.7V or little more. Mine was 12.9V fully charged.

28th Jul 2021 9:48pm

mikeh501

Member Since: 07 Jan 2013
Location: United Kingdom
Posts: 1142

Mos 5 is only just man enough for that battery too. I’ve got a mxs10 for 110ah

29th Jul 2021 9:30am

BogMonster

Member Since: 05 Feb 2008
Location: Stanley
Posts: 389

kmac wrote:
Don't measure the battery voltage with the charger on - it is bound to be high.

Disconnect charger and wait a little while then check voltage at battery. Should be about 12.7V or little more. Mine was 12.9V fully charged.

Yes I know that, what I meant was that the slight drain from the 'sleeping' demand might fool the charger by not quite allowing either the voltage to get up to expected level, or the current input to drop to a low enough level for it to deem the battery to be full. Mine all sit at 12.8-12.9 if full and in good condition. ---
2006 Defender 110 SW 300Tdi • 2011 Ford Ranger XLT crewcab • 2015 Defender 110 Station Wagon Utility TDCi

8th Aug 2021 11:04am

kmac

Member Since: 07 Oct 2009
Location: Middlesex
Posts: 1294

10th Aug 2021 1:40pm

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