Ctek d250se charger help
Submitted: Wednesday, Sep 21, 2022 at 17:05
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Savannah480
I have fitted a cteck d250se charger to my camper trailer which has two 100ah agm batts in parallel (200ah), vehicle is a Toyota LC200 2011, so not a smart alternator.
With the vehicle running and supplying approx 13.7 v to the cteck, the amber “service battery” light cycles on and off (approx 7 secs on and 3 secs off) with resulting voltage and current fluctuating up and down.
As an experiment, I disconnected one batt at a time and the light was normal (constant) for both single batts.
It appears that it can’t handle two batts but can handle one. The literature says it is good for 40-300 ah.
There is no fault light showing.
Not sure whats going on, any suggestions please.
Reply By: qldcamper - Thursday, Sep 22, 2022 at 04:28
Thursday, Sep 22, 2022 at 04:28
Have you measured the current flowing into each battery whilst it is charging?
If the batteries are in a low state of charge it may or may not be normal if the combined current is at or above the units max rating, read up on its over current protection.
Without reading the specs 12.7 should be more than enough to run the unit as over comming voltage drop is what they are designed to do. Eg, the redarc will operate down to 9ish volts until the supply batterys standing voltage gets down to a pre determined low voltage cut out.
Where did you buy the unit, if from a sparky ask them but if from a large retailer you will be lucky to find anyone with the knowlege to help you.
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