The D250SE is a fully automatic, 5 step charger that supplies up to 20A of power to any 12V lead-acid or lithium service battery from 40–300Ah. It has selectable charge algorithms for AGM and lithium batteries and can use power through its dual input from alternator and solar panel. When the service battery is fully charged, the D250SE will automatically redirect maintenance charge power to the starter battery. The D250SE can maintain a stable output up to 20A to vehicles fitted with smart ECU controlled alternators and also has a temperature sensor for optimised charging, regardless of weather conditions.

You will be supplied with everything you need

1x CTEK D250SE 20amp Charger
1-8m 10mm² 70amp Red Battery Cable (depending on kit length option)
2m 10mm² 70amp Black Battery Cable
5m 1.5mm² 15amp Red optional ignition cable
1x Pair 8mm Post Type Battery Terminals
2x Midi Fuse Holders + 4 x 30amp Midi Fuses
1x Pack Terminals + Heat Shrink
10x Cable tie bases
15x cable ties 150mm
15X 8x3/4 screws + 3mm HSS drill bit
2x adhesive pads
2m protective conduit to suit 10mm² cable
Wiring diagram

INPUT - 11.5–23 V, 25 A
OUTPUT - 14.4/14.7 V, 20 A max, lead-acid battery types.
14.2 V, 20 A max, LiFePO4.
BACK CURRENT DRAIN - Less than 1Ah/month
RIPPLE - Less than 4 %
AMBIENT TEMPERATURE - -20˚C to +50˚C (- 4°F to +122°F)
BATTERY TYPES 12 V: - WET, MF, Ca/Ca, AGM, EFB, GEL, LiFePO4
BATTERY CAPACITY - 40–300 Ah
INSULATION CLASS - IP65
WARRANTY - 2 years
NET WEIGHT (UNIT WITH CABLES) 0.7 kg
GROSS WEIGHT (UNIT IN BOX) 0.9 kg
DIMENSIONS (LXWXH) 192x110x65