The Ctek is a Dual input 20A battery to battery charger.
While it does have an integrated MPPT allowing for a solar input, due to the 23VOC limitation, meaning 20VOC in UK, there are only very specific panels that can be used. Alas, at this time none of our current panels fall within these ratings, so we offer you the CTEK as a well renowned battery to battery charger in its own right.
If you wish to add one or more panels, you are welcome to select from our available panels here Solar Panel Comparison and add an appropriate charge controller. If you are not sure about how to go about this please email email@example.com.
Similarly, there are many batteries to choose from which can be charged via the CTEK and you can view these here Battery Comparison. Again if you are unsure what type or size you need for your project you are welcome to get in touch.
Please note, in this bundle, you will need to fit the lugs on the 10mm cables that attach to the battery terminals yourself. 8mm cable end lugs are included for the 10mm square cable, as these are the most common size required, but we also have a range of other sizes available here Cable End Lugs
The 10mm cable end lugs with 6mm holes are for the CTEK connections.
Please check total cable lengths needed for your project, and alter the quanitity of 10mm square cable to suit your needs.
Availability: In Stock - Delivery 1-3 days or collect from near Lewes
Dual input 20A charger with selectable charge voltages
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, solar panel and wind power. 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. *) 12V lithium batteries (LiFePO4, Li-Fe, Li-iron, LFP)
Battery separation replacing diodes and VSR relays
Selectable AGM option – 14.4V or 14.7V
Maximised charging for better battery life and performance
Temperature sensor to compensate for hot or cold conditions
Splash and dust proof (IP65)
Compatible with SMARTPASS 120, SMARTPASS 120S for the ultimate 140A power management solution
Suitable for use with smart alternators?:
Input Voltage - Volts:
11.5 / 23
Output voltage - Volts:
Max 14.4V (14.7V in AGM mode)
Max. charging current - Amps:
BACK CURRENT DRAIN:
Less than 1Ah/month
Battery Temperature Sensor:
Input from alternator - V:
11.5v TO 23v
Input from solar panel - V:
11.5V to 23V
Conventional alternator cut-in:
>13.1V, for 5 sec. (engine running, alternator charging)
Conventional alternator cut-out:
<12.8V, for 10 sec. (engine running, alternator not charging) or service battery voltage > starter battery voltage
Smart alternator cut-in V:
>11.8V, for 5 sec. (engine running, alternator charging)
Smart alternator cut-out V:
<11.4V, for 10 sec. (engine running, alternator not charging) or service battery voltage > starter battery voltage
Suitable for battery types:
All 12V lead-acid batteries including: Wet, A.G.M, gel, calcium and maintenance free + LiFePO4 lithium batteries
Max. power input from solar panel - Watts:
Solar regulator type:
Operating temperature range - :
minus 20 degrees C to plus 50 degrees C Automatic reduction of power at high ambient temperature.
30 degrees C 16A, 50 degrees C 13A
IP65 (splash and dust proof)
This charger can only be used with solar panels that have a peak voltage of 23V. Please ensure that your panel is compatible before purchasing.
Temperature compensated charging, Reverse Polarity protection
European standard solar cable intended for the interconnection within photovoltaic systems such as solar panel arrays. Suitable for fixed installations, internal and external, within conduit or systems, but not direct burial applications. Our solar cable is ozoneresistant according to BS EN 50396, UV resistant according to HD 605 S2 and is tested for durability according to EN 60216.