what is the AMG settings for - CTEK 5.0 Charger

ive been using a ctek 5.0 for few years now and had to replace a 110 ah leisure battery after 12 months only - probably because the battery wasn't charged when and as required ?!   

do I have select CAR baterry or AMG  battery when charging ?      I always selected CAR battery  - could that be the reason the battery died after 12 months ?!  

cheers 

Amg i believe is if you have a gel battery. Car battery should be fine for normal leisure battery. 

Not sure about C-Tek charger but I have a halfords smart charger and it has 2 options stop/start aka car battery or standard which is a leisure battery both batteries are different hence the 2 options @spruce is the expert on these matters. 

I have a halfords 75ah leisure battery which is now 8 months old and I was charging it every other night but in the last few weeks had to start charging it every night as voltage is dropping to 12.3 after a days work but ideally I wouldn't let voltage drop below 12.5v .

Iron Giant said:

Not sure about C-Tek charger but I have a halfords smart charger and it has 2 options stop/start aka car battery or standard which is a leisure battery both batteries are different hence the 2 options @spruce is the expert on these matters. 

I have a halfords 75ah leisure battery which is now 8 months old and I was charging it every other night but in the last few weeks had to start charging it every night as voltage is dropping to 12.3 after a days work but ideally I wouldn't let voltage drop below 12.5v .

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You guys give me too much credit. :1f609: Not sure "expert" is how I would describe myself; Alex Gardiner, Yes, Doug Atkinson, yes, others not mentioned by name, yes, me, no.

I have heard the caravaners rave about these C_Tek chargers but when looking at the instruction manual 'cars' refers a big lead acid battery whereas 'motorbikes' is a small lead acid battery. AGM is a special battery which is charged at different voltages so the only option for a leisure battery is the 'car' option.

I've always understood that a car or starter battery charger wasn't suitable for a leisure battery as it didn't fully charge it. However, this C-Tek charger has an internal program similar to intelligent leisure battery chargers.

My suggestion would be for @Iurie to contact the manufacturers and ask them for a definitive response.

I have ctek charger its the car mode you use. 

As @spruce says agm is a gel battery which charges differently to lead acid. 

A gel battery is a lot lot more expensive than lead acid. C-tek are one of  the best about for chargers, just connect, select car mode and leave it. They can literally bring a battery back to full from empty. 

You may have had defective cells in yiur old one which is not uncommon. 

Thanks  for your replies 

I thought I would rather ask than damage my new battery lol 

spruce said:

You guys give me too much credit. :1f609: Not sure "expert" is how I would describe myself; Alex Gardiner, Yes, Doug Atkinson, yes, others not mentioned by name, yes, me, no.

I have heard the caravaners rave about these C_Tek chargers but when looking at the instruction manual 'cars' refers a big lead acid battery whereas 'motorbikes' is a small lead acid battery. AGM is a special battery which is charged at different voltages so the only option for a leisure battery is the 'car' option.

I've always understood that a car or starter battery charger wasn't suitable for a leisure battery as it didn't fully charge it. However, this C-Tek charger has an internal program similar to intelligent leisure battery chargers.

My suggestion would be for @Iurie to contact the manufacturers and ask them for a definitive response.

Click to expand...

You shouldn't give such informative answers  :1f61c:

Iurie said:

ive been using a ctek 5.0 for few years now and had to replace a 110 ah leisure battery after 12 months only - probably because the battery wasn't charged when and as required ?!   
 
do I have select CAR baterry or AMG  battery when charging ?      I always selected CAR battery  - could that be the reason the battery died after 12 months ?!  
 
cheers 
View attachment 10994

Click to expand...

I've got the same charger and have been using it for about a year with sealed AGM batteries. I've always had it on AGM to charge. I have two batteries one 45ah and one 50ah, One on charge one in the van.
I easily get a day and a half from each of these.

I went through the same pain with leisure batteries. I had 75ah, 110ah and 85ah lead acids all of them failed in a short space of time. I changed to the Ctek charger from basic Maypole ones. The AGM are both second hand from a mobility company and were £10 each. Well chuffed.


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