Purpose of the device
The device is intended only for charging 2, 6 and 12-volt maintenance-free lead-acid batteries (gel or absorbed glass mat - AGM) with a capacity of 1.2-63 Ah. It must not be used for any other purpose. The 2/6/12 volt switch is located in the lower right corner of the charger's nameplate. In order for the charger to work properly, you must set there the same current parameter as the battery to be charged.
Description of the device
The automatic charger allows automatic charging of lead-acid batteries with a voltage rating of 2, 6 or 12 V. When the battery is fully charged, the current is automatically reduced to avoid overcharging. By automatically adjusting the charging voltage and current, the connected battery will be fully charged without the risk of overcharging or over-gassing.
The device is characterized by the following features:
- protection against short-circuits and improper terminal connection
- constant final charging current
- optical display of charging parameters and polarity
- regulation of charging voltage with a slide switch
The device has been tested in accordance with European standard 89/336/EEC (EMVG, 09.11.1992) and complies with the applicable laws. Changing the switch or using non-original parts will violate the conditions of approval.
Description of operation
Unlike simple devices of this type, the charging current in this automatic charger is not constant and depends on a number of factors, including the state of charge, age, type and capacity of the battery. In addition, the degree of discharge of the battery is important. If the battery has been discharged with a high current, the initial charging current will be high (max. 0.8 A), and after a short period of time it will gradually decrease. In other words, as the voltage increases, the charging current decreases, as shown in the diagram below.
AL800 charging characteristics as a function of time
For the efficiency of the charging process, it does not matter whether the battery is completely or only partially discharged. The battery can remain connected to the charger for a long time, under ambient temperature conditions in the range of 10 - 25 °C. If you mistakenly swap the terminals when connecting the battery, this will be indicated by a red light. You should then immediately disconnect the battery from the charger.
The indication of the LEDs on the AL800 charger:
- red diode: incorrectly connected terminals
- green diode: device on, connected to electricity
- yellow diode: battery correctly connected, charging is in progress, the diode will turn off after the battery is fully charged which can take up to 48 hours
Specifications:
Charging completion voltage: 2.3 / 6.9 / 13.8 V
Max. charging current: 0.8 A
Supply voltage: 230 V ~
Dimensions: 85 x 65 x 35 mm (L*B*H)