The universal battery charger
The MULTI XS 7000 is an ideal battery charger for your caravan, car and boat. The battery charger is well suited for year-round use. Thanks to its SUPPLY mode the battery charger provides power even without a battery. The SUPPLY mode is indispensable when changing the battery as you avoid losing complicated program settings. Using RECOND mode, you can correct the acid stratification that often occurs in deeply discharged batteries. The battery thereby has its power restored and has a longer service life.
Charging
The MULTI XS 7000 has a fully automatic, eight step charge:
- Desulphation
Desulphation with pulsing for sulphated batteries. Start
Starting phase for charging. The starting phase continues until the battery’s terminal voltage has risen over a preset level. At this point, charging goes into the bulk phase. If the terminal voltage has not reached the preset level within a preset time, charging is suspended. The error mode is indicated. This indicates a battery which is faulty or has too large capacity. If a large battery is charged that has been severely discharged, it may be necessary to restart the charger after a preset time.
Bulk
Primary charging where approximately 80% of the charging takes place. The charger delivers maximum current until the terminal voltage has risen to the preset level. After a number of hours, the charger goes on to the next phase, even if maximum voltage is not reached.
Absorption
Final charging, voltage is kept at the preset level. During this phase, the current is gradually reduced. If the maximum length of time for Absorption is exceeded, the charger automatically continues with Analysis.
Analysis
Charging is suspended for a short period and the battery voltage measured. If it falls too quickly, the battery is probably faulty. Charging is suspended and an error is indicated.
Recond
Recond is used to recover severely discharged flooded batteries and for reconditioning severely discharged batteries suffering from stratification. The voltage increases with reduced current for a limited time period (depending on the charge level of the battery at start). The higher voltage starts some gassing and mixing of the acid, which is beneficial for both battery capacity and expected life. The battery could emit explosive gas during this step.
- Maintenance charging - float
During the first 10 days of maintenance charging the battery is maintained with constant voltage. Maintenance charging - pulse
State of charge varies between 95% and 100%. The battery receives a pulse when the voltage sinks, keeping the battery in good shape when it is not being used. The charger can be connected for months at a time. If the battery is charged and/or the battery’s terminal voltage drops, the charger starts a charge pulse until the voltage has reached the preset level. The charge pulse is then interrupted and the cycle is repeated as long as the charger is in pulse maintenance phase. If the terminal voltage drops even lower, the charger automatically reverts to the beginning of the charging curve. If possible, check the water level in the battery.
Using the MULTI XS 7000 gives your battery an optimum service life and operational reliability.
Technical Data
| MODEL | MULTI XS 7000 |
|---|
| Input voltage AC | 170-260VAC, 50-60Hz |
| Output voltage | Nominal: 12V |
| Efficiency | 85% |
| Charging voltage | 14.4V, 14.7V, 13.6V/Supply, 16V/Boost |
| Charging current | 7A Max |
| Back current drain* | <3mA |
| Ripple** | Max 150mV rms, 0.3A |
| Ambient temperature | -20°C to +50°C, output power is reduced automatically at higher temperatures. |
| Type of charger | Eight step, fully automatic switch mode with pulse maintenance. |
| Type of batteries | 12V lead-acid batteries (Wet, MF, AGM and GEL) |
| Battery capacity | 14-225Ah |
| Dimensions (L x W x H) | 191x89x48mm |
| Insulation | IP 65 (splash and dust proof), outdoor use |
| Weight | 0.8kg |
*) Back current drain is what drains the battery if the charger is connected without the power cord connected.
**) Ripple denotes the amount of interference there is to the current and voltage. A high current ripple heats the battery and shortens its life. A linear charger has a current ripple of 70 - 400% which is much larger than the maximum 5% for a modern sealed battery. Voltage ripple could harm other equipment, which is connected to the battery. The MULTI XS 7000 delivers voltage and current with very low ripple. The battery gains a long service life and there is no risk of damage to other electronic devices connected to the battery.
