Explanation 1: Reverse polarity.
Test: Make sure that the + cable/clamp is connected to the + terminal and the – cable/clamp is connected to the – terminal.
Explanation 2: Loads are connected to the battery which requires more power than the charger can provide.
Test: Turn off or disconnect the loads when charging.
Explanation 3: The charger is not connected to a 12V battery.
Test: Test with a fresh 12V battery.
Explanation 4: The charge cycle is interrupted in step 1.
Test: Test to restart the charge cycle, if it still fails in step 1 the battery is sulphated and needs to be replaced.
Explanation 5: The charge cycle is interrupted in step 4.
Test: Test to restart the charge cycle, if it still fails in step 4 the battery is can’t be charged and needs to be replaced.
If no battery or if the battery voltage is too low the led will start to flash to indicate the unit has entered power save mode.
Test: Test the charger on a fresh battery.
The D250SA has a wiring harness with a black and a red wire, the black wire must be earthed / grounded to change the charging voltage for AGM.
Any application involving a secondary battery or solar panel- please refer to manual or web page for fitting instructions.
The recommended size of panel is 50-300W.
If your cigarette lighter socket is connected to the battery even when the ignition isn't on, you can charge the battery that way. You need a CONNECT Cig plug or a INDICATOR Cig plug for this.
No, you only require the service battery to be lead acid.
No, it works only with lead acid batteries.