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CTEK D250SE

20A dual-input 12V charger with smart alternator support and MPPT solar.

Best for: Alternator and solar charging for 12V service batteries.

Key facts

Maximum output
20 A
Input Voltage Max V
23 V
Input Voltage Min V
11.5 V
Integrated Mppt
Yes
Ip Rating
IP65
CurrentDc To Dc ChargerReviewed: verifiedMarket: USVerified 2026-09-14
Specifications alone do not confirm that a product fits your RV. Match the RV model and year to documented fitment evidence, then check system voltage, battery chemistry, wiring, protection and input/output limits before buying.
NO ELIGIBLE BUYING OPTION · UNITED STATES

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Specifications and source evidence

Start with the key facts above. Open the complete evidence only when you need the detailed values and citations.

View all 10 verified specifications and sources
Input Voltage Min V
11.5 V
Operating Temp Min C
-20 C

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Why you can trust this record

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