Quote:
Originally Posted by MrForbes
How good of a filter is the battery?
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Most batteries are good low-frequency filters, but they don't do much to reduce high-frequency noise or transient spikes -- or the kind of intentional pulses one gets from a "smart" charger.
I'm going to modify my earlier advice. Don't use a battery charger to power a circuit unless 1) the charger is designed for it, and 2) the circuit is designed for it.