I have some bits laying around and need to build a 12V constantly on power source to run some circuitry. I have a sealed lead acid (SLA) battery (12V 7Ahr) and an intelligent trickle charger specifically designed for SLA batteries. The trickle charger can supply about 1A maximum charge current. The circuitry that will run constantly draws about 100mA, but very occasionally will draw 3A for 15 minutes.
Can I just run my circuitry off the SLA whilst it is permanently connected to the trickle charger which is then permanently connected to the mains?
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