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Trickle charger
noun
Definitions
Noun
- 1 A device for charging a battery slowly, using a very small current.
"Attempts by Waterloo signalmen to clear the points by power operation eventually exhausted point motor batteries, which are fed by trickle chargers, and a blown fuse accentuated the problem; thus, even when the points had been cleared of ice, no power was available to operate them until the batteries were sufficiently recharged."
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