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Summary of Contents for CTEK MULTI US 3300
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Page 1: Battery Charger
Switch Mode BATTERY CHARGER For lead-acid batteries 2-90 Ah MULTI US 3300 User’s Manual and a guide to professional battery charging For Starter/Deep Cycle batteries... -
Page 2: Important Safety Instructions
The MULTI US 3300 is a primary switch mode battery charger with pulse maintenance. The MULTI US 3300 is designed to offer maximum life for the battery. MULTI US 3300 is a member of a family of professional chargers from CTEK SWEDEN AB. It represents the state-of-the-art of today’s technology for battery charging. -
Page 3: Personal Precautions
11. WARNING - RISK OF EXPLOSIVE GASES a) BATTERIES GENERATE EXPLOSIVE GASES DURING NORMAL BATTERY OPERATION. FOR THIS REASON, IT IS OF THE UTMOST IMPORTANCE THAT EACH TIME BEFORE USING YOUR CHARGER, YOU READ THIS MANUAL AND FOLLOW THE INSTRUCTIONS CAREFULLY. -
Page 4: Charger Location
13. PREPARING TO CHARGE If necessary to remove battery from vehicle to charge, always remove grounded terminal from battery first. Make sure all accessories in the vehicle are off, so as not to cause an arc. Be sure area around battery is well ventilated while battery is being charged. Gas can be forcefully blown away by fanning the area with a piece of cardboard or other non-metallic material. - Page 5 Stay clear of fan blades, belts, pulleys, and other parts that can cause injury to persons. Check polarity of battery terminals. POSITIVE (POS, P, +) battery post usually has larger diameter than NEGATIVE (NEG, N, -) post. Determine which post of battery is grounded (connected) to the chassis. If negative post is grounded to the chassis (as in most vehicles) see (e).
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Page 6: Important Safety Information
IMPORTANT SAFETY INFORMATION! The MULTI US 3300 cannot be used to restore a fully worn out battery. If the MULTI US 3300 does not switch to maintenance charge after three days (green light illuminated), there is a fault. Possible causes: •... - Page 7 The length of the pulse depends on how much charge the battery has lost. The MULTI US 3300 may be con- nected for months at a time. However it is recommended to monitor batteries on charge.
- Page 8 BATTERY TYPES AND SETTINGS MULTI US 3300 can easily be set for different types of batteries or conditions. The fol- lowing recommendations should however only be seen as guidelines. Please consult the battery manufacturer for further instructions.
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Page 9: Charging Cycle
CHARGING CYCLE MULTI US 3300 operates in a three step fully automatic cycle IU o U p . It starts the charging with an almost constant current (0.8A or 3.3A) until maximum voltage (14.4V or 14.7V) is reached. At this point the charger switches to constant voltage, and the current supply to the battery is gradually reduced. -
Page 10: Bulk Charging Time
BULK CHARGING TIME The table shows the duration of the Bulk stepup to about 80% state of charge. The time for the Absorption should be added. Battery size Mode Time (Ah) 8-10 12-14 23-26 INDICATORS Incorrect polarity. Charging process Charging completed. Pulse maintenance. Standby / Power on. -
Page 11: Technical Data
*) The back current drain is the current that the charger uses from the battery when the wall plug is not connected. The reverse current of the MULTI US 3300 is very low and corresponds to 1 Ah per month. -
Page 12: Overheating Protection
The MULTI US 3300 is equipped with overheating protection. In high ambient tempera- tures the output power is reduced. Do not cover the charger. BATTERY CABLES MULTI US 3300 is equipped with a set of battery cabels with battery terminal clips and one set of battery cable with eyelet terminals. MAINTENANCE The MULTI US 3300 is maintenance-free.
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