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- DictionaryTrick·le charg·er/ˈtrikəl ˈCHärjər/
noun
- 1. a battery charger that produces a very small current.
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noun
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Slowly charging a full battery to compensate for its self-discharge
Trickle charging means charging a fully charged battery at a rate equal to its self-discharge rate, thus enabling the battery to remain at its fully charged level; this state occurs almost exclusively when the battery is not loaded, as trickle charging will not keep a battery charged if current is being drawn by a load. A battery under continuous float voltage charging is said to be float-charging... Wikipedia