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I have a habit of editing a reply, Got my new Numax battery today and put it on charge tonight as it wasn't fully charged and ready to go, using my Halfords charger on a standard setting, I had considered a Numax charger from Tanya batteries but wasn't sure and if I have a charger already I didn't want to replace something if it does the job, but I may buy one in the future had a bit of a spend this past weekSorry IG. I somehow missed this one.
These C-Tek chargers are pretty good but generally C-Tek make low amperage output chargers that can be used for a variety of different batteries; starter, motor cycle, leisure, AGM etc.
But if you have a relatively flat 110 amp battery, its going to take ages to charge it at 5 amps. (at 50% discharged it will probably take 12 hours to recharge the battery.)
I have found that my bog standard Numax 10amp leisure battery charger for motor homes kicks on at 14.2v for an intial 'boost' charge and quickly drops to 13.9v. These are all safe battery charging profiles for most batteries. A flooded leisure battery can be charged at 14.6v but the same maintenance free leisure battery should only be charged at 14.2v. Its all about gassing. So if I have a flooded battery my charger isn't really charging that battery to full capacity as fast as it could.
I have found over the years that after charging/float charging my leisure battery, the alterator is still able to push some more in. That's fine for a flooded battery because my alternator charges at 14.6v. If I had a sealed battery, then that should really only be charged at 14.2v. I would expect those extra charge volts to effect battery longevity. (My Sterling batt to batt charger has seperate charge setting for AGM, lead acid flooded, lead acid sealed and lithium.)
All I can say is that in the 12 years I have had this Numax charger I haven't had a battery problem. When I had my trailer system I was replacing the leisure battery every year. I was using a car charger to charge that, but the battery was also mounted on the trailer's drawbar and exposed to the elements. So I can't say if these battery failures were down to the charger or the elements or both.
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