Battery Conditioners

Designed to be left connected to automotive-type batteries for extended periods of time. It will maintain the battery in a charged ready-to-go state, ensuring, for example, that a vehicle‘s alarm current does not drain the battery. Fitted with crocodile clips, in-line fuse and 4M of cable. Display packed.

Input ... 230V AC - 50Hz
Output ... 12V DC 300mA
Cable length ... 4M
Battery suitability ... 30 -140Ah

£24.99 + £3.49 p+p

0161 355 1275

CTEK XS 800 £32.35


• Four step, fully automatic switch mode model.
• Charges lead-acid batteries (Wet, MF, GEL and AGM) from 1.2Ah to 32Ah, 1.2-100Ah maintenance charging.
• Maintenance pulse charging increases battery life and gives superb performance.

• Charges even drained batteries.
Pulse recover of slightly sulphated batteries.
• Low back current drain, low ripple and input voltage independent (170-260V).

• High efficiency: 85%
• Delivered with two interchangeable connection leads, one with clamps, and one with eyelet terminals.

• The charger can be connected for months, ideal for seasonal vehicles.

• Compact design with mounting holes for permanent assembly.
• 2 year warranty.


• Electronic safe, the charger will not damage vehicle electronics. The battery does not normally need to be disconnected from the vehicle when charging.

• Minimal gas build-up and a patent-pending spark protection system.
• Short circuit and reverse polarity protected.
• Double insulation.
• Splash and dust proof (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 55014-2, EN 55022, EN 61000-3-2 and EN 61000-3-3


To protect the charger from overheating, the XS 800 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.


The XS 800 charges lead-acid batteries (Wet, MF, GEL and AGM) from 1.2Ah to 32Ah. You will find an explanation of the various battery types under Charger University, Battery Types.

The charger can also be used for maintenance charging of 12V lead-acid batteries from 1.2Ah to 100Ah.

The XS 800 is easy to use. You do not need to make any settings. The charger adapts the charge to suit the battery and switches to pulse maintenance charging when the battery is fully charged.

2 2
8 8
20 20
60 60
100 >80


The XS 800 has a fully automatic, four step charge:

1. 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.

2. Bulk
Charging where 80% of the energy is returned. The charger delivers a constant current until the battery voltage has reached the set level.

3. Absorption
Final part of the charge up to 100%. The battery voltage is kept constant at the set level, during which time the current drops gradually.

4. Pulse
Maintenance charging. 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 XS 800 gives your battery an optimum service life and operational reliability.

Input voltage AC 170-260VAC, 50-60Hz
Output voltage Nominal: 12V
Efficiency 85%
Charging voltage 14.4V
Charging current 0.8A max
Back current drain* <1mA
Ripple** 10mV rms, 12mA (2%)
Ambient temperature -20°C to +50°C, output power is reduced automatically at higher temperatures.
Type of charger Four step, fully automatic switch mode with pulse maintenance.
Type of batteries 12V lead-acid batteries (Wet, MF, AGM and GEL)
Battery capacity 1.2-32Ah (1.2-100Ah maintenance charging)
Dimensions (L x W x H) 142x51x36mm
Insulation IP 65 (splash and dust proof)
Weight 0.3kg
*) Back current drain is what drains the battery if the charger is connected without the power cord connected. XS 800's extremely low back current drain corresponds to < 1Ah per month. Many other chargers have 1Ah per day.
**) 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. XS 800's ripple is only 2%. The battery gains a long service life and there is no risk of damage to other electronic devices connected to the battery.


The charger is easily fitted in place using two screws.
The diameter of the mounting holes is 4.2mm located as shown in the image. The image also shows the dimensions of the charger.


The XS 800 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.


The following extra accessories are available for the XS 800:

• Connection lead with eyelet terminals.

Available in diameters of 6.4mm or 8.4mm.

• Connection lead with cigarette plug.

• Connection lead with battery terminals.

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