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Switchmode Power Supply problem

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greencardigan

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Hi all,

I'm trying to power a battery charger from a 12V 3A power supply. The problem is the charger only runs for about 4 or 5 minutes before switching to trickle charge.

The charger works fine when powered from a 12V SLA battery.

Any ideas??? Is the noise from the SMPS causing problems with the charger?

Thanks
 

Your description is not very clear. Are you trying to charge the battery, or are you powering the charger from a battery to charge another battery?
Can you be more specific?
 

I can not understand what your said.
 

Sometimes when you connect SMPS to SMPS they don't like each other and can mulfunction.
Maybe the battery charger is also a "SMPS" and doesn't like to be supplied of another SMPS.
DrWhoF
 

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