Abbildung DEFA showroom chargers
DEFA showroom chargers
Chargers for closed and sealed lead-acid batteries: Flooded, calcium, GEL, AGM, EFB as well as partially lithium batteries

DEFA showroom chargersDiscreet at the dealership

With its power-supply function, the charger supplies the consumers during demonstrations, fittings and inspections and gently keeps the battery fully charged.
Our recommendation for charging starter batteries in the car dealership.


  • Perfect for demonstrations

    In the showroom, the battery is particularly challenged: Lighting and electronics are activated every time the doors are opened, but the engine and alternator cannot charge the battery. This charger is designed exactly for this use and keeps all functions active and battery charged without overloading the battery.

    Your advantage: Your vehicles are always ready for test drives and sales without battery replacement.

  • Unobtrusive

    The compact design, detachable cables and clever mountings allow the charger to be placed almost invisibly under the vehicle or even in the engine compartment.

    Your advantage: powerful function without distracting from the object on display.

  • Versatile

    Thanks to the intelligent technology, all lead-acid batteries used in the automotive sector and, with the DEFA ShowroomCharger 50A, also lithium batteries are charged safely and reliably.

    Your advantage: Charge all vehicles in your exhibition or collection with one type of charger.


  • User-friendly and fully automatic high-frequency charger.
  • 7-phase charger with trickle charging over an unlimited period of time as well as analysis before and after charging.
  • Suitable for flooded 12-volt starter batteries including calcium batteries also with 14.7-volt charge voltage, for sealed AGM, GEL, MF and SLA batteries as well as for start-stop batteries, both Enhanced Flooded Batteries (EFB) and AGM batteries.
  • DEFA ShowroomCharger 50A also suitable for lithium batteries.
  • Protection against reverse polarity, contact spark and short circuit. With galvanic isolation.
  • Discreet. Made of black anodised aluminium and noiseless.
  • Invisible placement. Removable cables can be routed through the engine compartment.
  • Charge status readable via LED. Error indication via flashing light.
  • Software update possible via micro USB interface.


Item nr. Volt Ampere Length mm Width mm Height mm
DEFA Showroomladegeräte DEFA-SR-32


Connection voltage:230 V
Connection current:32 A
DC voltage:12 V
DC current:32 A
Size:219 x 125 x 62 mm
Weight:3,5 kg
Where can I
buy this?
DEFA Showroomladegeräte DEFA-SR-50


Connection voltage:230 V
Connection current:50 A
DC voltage:12 V
DC current:50 A
Size:280 x 175 x 85 mm
Weight:6,8 kg
Where can I
buy this?

Charger Knowledge

What does that even mean? Charging curve?
Current and voltage during charging can be measured and displayed as a curve over the course of the charging time. Depending on which processes, controls by switch-off (a) or switch-over points (0) are possible with a charger, one speaks of the provided charging characteristics.
Cleanliness pays off
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Charging the vehicle battery now and then
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When is a multi-voltage charger worthwhile?
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