Thursday, Sep 19, 2013 at 12:06
As promised here is Ctek's email answer......firstly read my query...then their response
as you can see whoever answered the query didn't fully read/understand and do their homework on the questions.....cant be bothered answering them if that is the quality of there feed back and they don't fully understand what was asked (or they don't know their product they are agents for?)
Comment
Hi have a D250S Dual charger. I have mounted it under the bonnet in the only practical location (drivers side of Land Cruiser 4.5 diesel V8 79 series).
In this location the temperature probe lead reaches the aux battery (this battery adjacent to and immediately behind the OEM battery)....passenger side
Your unit shows over temperature and the only way I can get this charger to work is to shift the temp probe to the front grill area to get a cooler spot.
Given that the OEM battery is under exactly the same operating temperature as the aux. battery I am disappointed that your charger appears
a) either unable to operate under normal under bonnet operating temperatures or
b) is it that it considers the battery it is charging is at too higher temp to charge
c) if so then how is it that the OEM battery is being charged quite happily under that same temperature?
d) if it is the charger unit itself that is too hot (as against the battery temp with the probe at the terminal) then a longer lead is obviously required to allow the battery charger to be housed some distance away from the under bonnet it is currently limited to
I would appreciate your comment as to how to over come this situation as in purchasing this unit I thought I was purchasing the perfect unit.....and something is clearly limiting its operation under what I consider a normal operating / installation system
Their Response:
THanks for your email, Graeme
The D250s is subject to temperature the same was as your current alternator is,e.g reduces charge rate
as temperature of the battery increases.This is to stop the averse over charging and damage to he battery
that occurs with rise in temperature. External cooling in our extreme temperature variations is important for
long term life of our batteries.
As you most likely have notices that current battery installations have a cooling chamber round the battery vented
and a cool input duct to the front of the vehicle to try and over come the 50deg C temperatures experienced
in under bonnet temperature levels.
So the best way to over come charge difficulties withe the D250s is to provide cooling for the batteries and mount
the D250 is a cooled position possibly under the dash with the temp probes adjacent to the battery location.Do not
leave the temp probes under ha dash as this will cause improper charging as the cab is cooler than the engine
compartment.
As Ctek has not released any information on this, we have come to our own conclusions regarding the temp range that the
Ctek can operate under and as per the spec 50 Deg c is the maximum range it can extend to.
Hope this helps,
Regards
Peter
FollowupID:
798247