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Trickle charging is the process of charging a fully charged battery at a rate equal to its self-discharge rate, 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 trickle charger is typically low-current (usually between 5–1,500 mA). They are generally used to charge small capacity batteries (2–30 Ah). They are also used to maintain larger capacity batteries (> 30 Ah) in cars and boats. In larger applications, the current of the battery charger is only sufficient to provide trickle current.
Extend the life of your car battery or bring a depleted one back to full power with expert-approved chargers from Battery Tender, Noco, Schumacher, and more.
The C rate is that which would theoretically fully charge or discharge the battery in one hour. For example, trickle charging might be performed at C/20 (or a "20-hour" rate), while typical charging and discharging may occur at C/2 (two hours for full capacity). The available capacity of electrochemical cells varies depending on the discharge rate.
Either your battery is permanently dead and needs to be replaced or there's something wrong with your car's charging system. Repeatedly jump-starting your car won't cure the problem.
Take regular long journeys to keep yours running well, or consider using a trickle-charger which is designed to stop your battery going flat. Keep screen wash topped up, and use a proper anti ...