The CTEK M100 Marine 7A Battery Charger is a smart and versatile 12V battery charger in the CTEK marine line up.

The CTEK M100 Marine 7A Charger will meet the battery care requirements within a marine environment for 14-225 Ah batteries as well as AGM batteries. The CTEK M100 features a special Recond mode which can recover a stratified battery and therefore extend the life of the battery, which is ideal for the harsh conditions of the marine environment as boat batteries often becomes deeply discharged and this is what can lead to stratification.

The CTEK M100 Marine 7A Battery Charger delivers 7 amps. Its insulation is IP65 class and follows the CTEK criteria. This charger charges and also maintains, has no harmful galvanic currents, it is reverse polarity protected, spark-free, it is rainproof and splashproof, electrical equipment will not be damaged and it is supplied with a 5-year warranty.

Features

• Eight-step, fully automatic switch-mode model
• Charges lead-acid batteries (Wet, MF, GEL and AGM) from 14 Ah to 225 Ah
• Maintenance pulse charging increases battery life and gives superb performance
• Supply mode for float maintenance for 100% state of charge
• Charges even drained batteries
• Pulse recover of slightly sulphated batteries
• Four options: 14.4V, 14.7V, 13.6V/Supply, 15.8V/Recond
• Low back current drain, low ripple and input voltage independent (220-240V)
• High efficiency: 85%
• Delivered with connection lead with clamps
• Charger can be connected for months so ideal for seasonal vehicles
• Compact design with mounting holes for permanent assembly
• 5-year warranty

Safety

• Electronic-safe, charger will not damage vehicle electronics. Battery does not normally need to be disconnected from vehicle when charging
• Minimal gas build-up and patent-pending spark-protection system; however, in supply mode, spark-free feature is disconnected
• Short circuit and reverse polarity protected
• Double insulation
• Splashproof and dustproof (IP65) and approved for outdoor use
• Progressive temperature protection
• Tested and approved by Intertec SEMKO AB. S-marked and conforms to the following standards: EN 60335-1, EN 60335-2-29, EN 61000-3-2, EN 61000-3-3, EN55014-1

Batteries

The M100 can be set very easily to charge different types of lead-acid batteries (Wet, MF, GEL, Calcium/Calcium and AGM) and conditions. You will find an explanation of the various battery types under Charger University, Battery Types. The M100 charges a wide range of battery sizes, from 14 Ah to 225 Ah.

Settings Explanation

• 14.4V: Normal setting for wet batteries, MF and for most gel batteries.
• 14.7V: This setting is recommended for batteries at temperatures below 5°C. It is also recommended for many AGM batteries. This setting is not recommended for maintenance charging when the temperature at times exceeds +5°C. In this case, the Normal mode is recommended.
• 13.6V/Supply: In this mode, the charger provides a constant voltage of 13.6V. This is the best maintenance mode for batteries where maximum capacity is important, for instance for cleaning machinery and golf carts. It is not appropriate to charge a completely discharged battery in Supply mode, since this will not result in a completely charged battery. The M100 can also be used as a power supply without a battery attached in this setting. No counter voltage is required to start the charger in this mode. Note that the charger is not spark free in this mode.
• 15.8V/Recond: This mode is used to recondition very discharged batteries where you could expect a stratified acid (high acid weight in the bottom, low on top). Use this mode with care because it can cause some water loss. 15.8V is normally not a problem for electronics but consult the manufacturer when in doubt. Life of light bulbs can be reduced by higher voltages. Try to avoid using 12V lamps connected to the battery during this phase. Maximum effect and minimum risk for electronics is achieved by disconnecting the battery before charging.

Bulk Charge Time: Battery Size (Ah) for about 80% Charge (hrs)

• 20 Ah: 3 hrs
• 60 Ah: 8 hrs
• 100 Ah: 12 hrs
• 225 Ah: 25 hrs

Temperature

To protect the charger from overheating, the CTEK M100 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 CTEK M100 is delivered with two different battery leads, one with clamps and one with eyelet terminals, all colour coded for easy ± identification.

If the battery is difficult to access, the lead with eyelet terminals can be mounted to the battery and the quick connectors are located so that it is easily reached for charging.

You can also purchase additional leads allowing you to have one lead with eyelet terminals fixed to all your vehicles with batteries that are difficult to get at and charge them simply from the same charger.

Specification

• Input voltage AC: 220-240V AC, 50-60 Hz
• Nominal output voltage: 12V
• Efficiency: 85%
• Charging voltage: 14.4V, 14.7V, 13.6V/Supply; 15.8V/Recond
• Charging current: 7A max
• Back current drain*: <3 mA
• Ripple**: Max 150 mV 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, Calcium/Calcium and GEL)
• Battery capacity: 14-225 Ah
• Dimensions (L x W x H): 191 x 89 x 48 mm
• Insulation: IP65 - splashproof and dustproof, outdoor use
• Weight: 0.8 kg

*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 M100 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.