Temperature
To protect the charger from overheating, the MULTI XS 25000 is fitted with power limitation. The power reduces when the ambient temperature increases. The power also reduces if the charger were to be covered, which protects the charger from damage. The charger continues to work, but at a lower output. When the ambient temperature drops, the power automatically increases again.
Equipment
The MULTI XS 25000 is delivered with a battery lead with clamps, colour coded for easy +/- identification.
The charger also has a sensor cable located together with the battery leads. The unit automatically adjusts the charge voltage if the temperature deviates from +25°C. Higher temperatures lower the voltage and lower temperatures raise the voltage. The sensor cable can be extended or shortened without affecting functionality.
Charging
The MULTI XS 25000 charges and analyses in eight fully automatic steps.
- Desulphation, runs a complete charge cycle within a fraction of a second. The cycle repeats during the whole desulphation phase. Every cycle recovers some lead sulphate into useful material.
- Soft Start tests the battery condition. Severely discharged batteries need the soft start step. The charging continues for a maximum 4 hours until the voltage reaches 12V.
- Bulk, is the main step where most of the charge is returned (80%). The charger delivers maximum current (25A) until the battery voltage has risen to the set level (or for max 20 hours).
- Absorption, completes the charge up to 100% at a constant voltage (14.4V at 25°C). Concludes when the current drops below 3A, and a further 4 hours of forming.
- Analysis, is a short intermission in the charge cycle where the charger analyses the voltage drop and tests the self-discharge. The voltage of a defective battery will quickly drop. The charge cycle will be stopped with a warning indication if voltage drops to 25.2V in 2 minutes.
- Recond is used to recover severely discharged flooded batteries and for reconditioning severely discharged batteries suffering from stratification. The voltage increases (to max 15.9V) with reduced current (5A) 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.
- Float is maintenance charge at constant voltage, keeping the batteries at 100% charge. In normal charging mode, float is time-limited (max 10 days) while supply mode goes on indefinitely.
- Pulse, maintenance charge. The state of charge varies between 95% and 100%. A pulse is sent out to the battery if the voltage drops. This keeps the battery in trim when not in use. The charger can be connected for months at a time.
Using the MULTI XS 25000 gives your battery an optimum service life and operational reliability.
Technical Data
| MODEL |
MULTI XS 25000 |
| Input voltage AC |
170-260VAC, 50-60Hz |
| Output voltage |
Nominal: 12V |
| Efficiency |
85% |
| Charging voltage |
14.4V, Temperature compensated |
| Charging current |
25A max |
| Back current drain |
<2Ah per month |
| Ripple |
<4% |
| Ambient temperature |
-20°C to +50°C, output power is reduced automatically at higher temperatures. |
| Cooling |
Fan |
| Type of charger |
Eight step, fully automatic, switch mode with pulse maintenance. |
| Type of batteries |
All types of 12V lead-acid batteries (Wet, MF, AGM and GEL). |
| Battery capacity |
50-500Ah |
| Dimensions (L x W x H) |
235x130x65mm |
| Insulation |
IP 44 (Outdoor use)*** |
| Weight |
1.4kg |
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