CTEK D250SE Battery to battery charger with built-in MPPT solar charge controller
 
Charge your leisure batteries from a Euro 6 Engine with a smart alternator as well as solar power. 
 
23VOC Max Solar charge controller
Compatible with wet, AGM, and LiFePO4 (lithium batteries)
Compact simple to install unit minimising cabling. 
 
D250SE description
 
Dual input 20A charger with selectable charge voltages

The D250 SE is a fully automatic, 5 step charger that supplies up to 20A of power to any 12V lead-acid or ­lithium* leisure 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. *) 12V lithium batteries (LiFePO4, Li-Fe, Li-iron, LFP)
 
Features
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 dustproof (IP65)
Compatible with SMARTPASS 120, SMARTPASS 120S for the ultimate 140A power management solution
2-year warranty