CTEK MULTI XS 4003 is smarter, better and safer than any other consumer charger yet seen.
This third generation charger has more features and more safety features than any other charger in this segment.
MULTI XS 4003 is a fully automatic 8-step switch mode charger. Extremely powerful and delivers 0.8A/4A.
MULTI XS 4003 is suitable for both advanced charger applications and the more general applications for cars, motorcycles, jet skis, snowmobiles, or other vehicles using small or medium-size lead batteries.
All CTEK battery chargers are electronic proof, non-sparking and reverse polarity and short circuit proof.


Input voltage AC: 220-240VAC, 50-60Hz
Output voltage: Nominal: 12V
Efficiency: 85%
Charging voltage: 14.4V/0.8A, 14.4V/4A, 14.7V/4A.
Charging current: 4A
Back current drain*: <1Ah / per month
Ripple**: 240mVp-p, 16mAp-p.
Ambient temperature -20°C to +50°C, output power is reduced automatically at higher temperatures.
Type of charger 8 step, fully automatic switch mode with pulse maintenance.
Type of batteries: 12V lead-acid batteries (Wet, MF, AGM, Calcium/Calcium and GEL).
Battery capacity: 1.2 -140Ah
Dimensions (L x W x H): 168x65x38mm
Insulation: IP 65 (splash and dust proof), outdoor use.
Weight: 0.8kg