Voltcraft CM 420 AA AAA Intelligent Battery Charger Station Charge Manager 420 Hoja De Datos

The “Charge manager 420” is a quick-charger for rechargeable NiCd and NiMH batteries
type AA/Mignon and AAA/Micro.

Furthermore, a standardised USB output is present to charge mobile phones, PDAs, MP3-
players, portable gaming consoles, navigation devices, etc. (the “Charge Manager 420”
only provides the output voltage and current, while the charging electronics are integrated
in the respective device attached).

The microcomputer-controlled quick-charging process charges NiCd-/NiMH batteries
to 100%.

100% means up to 115% of the capacity indicated for new rechargeable batteries and less
than 100% of the capacity indicated for older ones.

For batteries with a capacity of less than 1000 mAh, the discharge capacity (D) may not
reach 100%; this discharge value, however, must be greater than 80%. Otherwise the
battery is defective (preferably test with the “ALV” (“ALIVE”) programme).

This charging set does not require a discharge before starting the recharge process.
Based on its current charge status the accumulator is recharged to its currently possible
100%.

The recharging and discharging cycle is microcomputer-controlled independently of the
charge status of the battery.

The available charge and discharge currents are selected according to practical
considerations.

The charger has an automatic maintenance charge and energy saving mode.

The charger has an automatic battery monitoring system (charge current and charge
amount). The automatic battery detection registers if a battery is inserted or removed.

No memory effect occurs when charging (charge and discharge current are clocked). This
reduces a high internal resistance of the battery and increases its current carrying
capacity.

The efficiency of the batteries is improved (ratio of the required charge quantity to the
capacity that can be delivered).