The D250SE with dual input maximizes your vehicle's battery capacity and is the ideal charger for vehicles without access to mains power. The D250SE is a fully automatic charger with a five-stage charging process that provides up to 20 A for any lead-acid battery with a working voltage of 12 V or any service battery of the lithium type from 40 to 300 Ah. It features selectable charging algorithms for AGM and lithium type batteries and can be powered through its dual input via solar or alternator in parallel, as well as wind power. When the service battery is fully charged, the D250SE automatically switches to maintenance charging for the starter battery. The D250SE also delivers a stable current of up to 20 A in vehicles with a smart generator and has a temperature sensor for optimized charging under all weather conditions. 12 V lithium batteries (LiFePO4, Li-Fe, Li-iron, LFP).
The D250SE with dual input maximizes your vehicle's battery capacity and is the ideal charger for vehicles without access to mains power. The D250SE is a fully automatic charger with a five-stage charging process that provides up to 20 A for any lead-acid battery with a working voltage of 12 V or any service battery of the lithium type from 40 to 300 Ah. It features selectable charging algorithms for AGM and lithium type batteries and can be powered through its dual input via solar or alternator in parallel, as well as wind power. When the service battery is fully charged, the D250SE automatically switches to maintenance charging for the starter battery. The D250SE also delivers a stable current of up to 20 A in vehicles with a smart generator and has a temperature sensor for optimized charging under all weather conditions. 12 V lithium batteries (LiFePO4, Li-Fe, Li-iron, LFP).
The D250SE with dual input maximizes your vehicle's battery capacity and is the ideal charger for vehicles without access to mains power. The D250SE is a fully automatic charger with a five-stage charging process that provides up to 20 A for any lead-acid battery with a working voltage of 12 V or any service battery of the lithium type from 40 to 300 Ah. It features selectable charging algorithms for AGM and lithium type batteries and can be powered through its dual input via solar or alternator in parallel, as well as wind power. When the service battery is fully charged, the D250SE automatically switches to maintenance charging for the starter battery. The D250SE also delivers a stable current of up to 20 A in vehicles with a smart generator and has a temperature sensor for optimized charging under all weather conditions. 12 V lithium batteries (LiFePO4, Li-Fe, Li-iron, LFP).
The D250SE with dual input maximizes your vehicle's battery capacity and is the ideal charger for vehicles without access to mains power. The D250SE is a fully automatic charger with a five-stage charging process that provides up to 20 A for any lead-acid battery with a working voltage of 12 V or any service battery of the lithium type from 40 to 300 Ah. It features selectable charging algorithms for AGM and lithium type batteries and can be powered through its dual input via solar or alternator in parallel, as well as wind power. When the service battery is fully charged, the D250SE automatically switches to maintenance charging for the starter battery. The D250SE also delivers a stable current of up to 20 A in vehicles with a smart generator and has a temperature sensor for optimized charging under all weather conditions. 12 V lithium batteries (LiFePO4, Li-Fe, Li-iron, LFP).
Last updated at 06/09/2026 09:39:40
Ctek D250SE
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
CTEK D250SE DC/DC 20A Dual Battery System
30-day returns
D250se, Battery Charger 12v 20a, For Starter And Service Batteries In
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
CTEK D250SE Dual Input DC-DC 20A Smart Battery Charger, Power Bank
Delivery $15
CTEK D250SE 12V Dual Input DC-DC 20A Smart Battery Charger Car Vehicle Led Acid Lithium Charging
Delivery $15
CTEK D250SE 12V Dual Input DC-DC 20A Smart Battery Charger Car Vehicle Led Acid Lithium Charging
Free delivery
originally posted on simplysplitcharge.co.uk
Excellent build quality and good installation instructions. Just missing a battery and solar power app or separate module to make it superb.
originally posted on mydeal.com.au
The CTEK is a reliable product that suits my purpose
originally posted on ebay.com
Great product. Works fantastic at maintaining charge in remote battery.
| Battery capacity | 40–300 Ah |
| Back current drain* | Corresponding to less than 1 Ah/month |
| Battery voltage | 12 V |
| Battery chemistry | Lead acid; Lithium-ion |
| Input | 11.5–23 V, 25 A |
Ctek D250SE
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
CTEK D250SE DC/DC 20A Dual Battery System
30-day returns
D250se, Battery Charger 12v 20a, For Starter And Service Batteries In
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
CTEK D250SE Dual Input DC-DC 20A Smart Battery Charger, Power Bank
Delivery $15
CTEK D250SE 12V Dual Input DC-DC 20A Smart Battery Charger Car Vehicle Led Acid Lithium Charging
Delivery $15
Excellent build quality and good installation instructions. Just missing a battery and solar power app or separate module to make it superb.
The CTEK is a reliable product that suits my purpose
Great product. Works fantastic at maintaining charge in remote battery.
Very pleased with this product, i had it in my previous rv and purchased another for my new rv
works very well
| Battery capacity | 40–300 Ah |
| Back current drain* | Corresponding to less than 1 Ah/month |
| Battery voltage | 12 V |
| Battery chemistry | Lead acid; Lithium-ion |
| Input | 11.5–23 V, 25 A |
