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In daily life, we frequently encounter three battery types:Lithium battery, Lithium iron phosphate battery and lead-acid battery. Bitte beachten Sie, dass Lithium-Eisenphosphat-Batteries zwar ebenfalls zu den Lithium-Batteries belong, sich ihre charging voltage und Ladekurve jedoch von traditional Lithium-Batteries unterscheiden.
Verschiedene Battery types erfordern unterschiedliche Ladespannungen. Daher must wir bei der Auswahl eines geeigneten charger's for unsere Batteries in der Regel grundlegende Informationen over den Battery type und den Ladestrom kennen. Ein ausgezeichnetes battery charger hat noch weitere Pluspunkte, etwa ob es die protected Battery aktivieren kann und ob das Temperaturkontrollsystem und das refrigeration system der Battery gut funktionieren.
1.charging voltage
It is very important to choose the correct charging voltage for the battery. If the voltage exceeds the battery's charge voltage, the battery will be damaged due to its sensitivity to overvoltage and overcurrent. If the voltage is below the charging voltage, the battery will not be fully charged. If the voltage does not match, please do not use it to charge your battery.
How do we determine the charging voltage of our Lithium-Iron-Phosphate battery?
A. Read the operating instructions of your battery. Normally, the charge voltage of this battery is displayed there.
B. Calculate the charge voltage according to the number of cells connected in series in the battery pack.A single LiFePO4 battery cell has a nominal voltage of 3.2 V and a recommended charging voltage range of 3.50 V to 3.65 V. For example, a 4S battery means four battery cells are connected in series, so the battery has a nominal voltage of 12.8 V (3.2 * 4 = 12.8 V) and a charging voltage of 3.65 V * 4 = 14.6 V (please note that we also refer to it as a 12-V battery in everyday use).
Information on the voltage specifications of different LiFePO4 battery packs and systems can be found in the following table.
Since some 51.2-V-Accus are marked with 48 V, please double-check when selecting a charger whether it is a 15S or 16S battery, and then choose the appropriate voltage.
2.charge current
The larger the charging current, the shorter the charging time. That's a consensus. Is it better to choose a charger with a larger current when selecting a charger?
Die Power beim Laden von Lithium batteries wird durch die internen Einstellungen des charger's bestimmt, die vom Benutzer nicht changed werden can. Hersteller konfigurieren die Ports for langsames Laden und schnelles Laden basierend auf den specific Eigenschaften der Battery, und das battery management system (BMS) verwaltet den Ladevorgang uniformly.
Normally, the manufacturer provides a range for the charging current and a recommended charging current. 0.2 C or 1 C is the most commonly recommended charging current. Using this recommended charging current is better for the lifespan of the lithium battery. For example, if you have a 12.8-V-100-A battery and the recommended charging current is 0.2 C, please select a charging current of 100 * 0.2 = 20A.
