Stecamat 821

Processor-controlled charger for lead-acid batteries

Stecamat 821
Stecamat 821 technische Zeichnung
Stecamat 821
Stecamat 821 technische Zeichnung


The battery charger Stecamat 821 is available in a light, compact housing. The processor-controlled charging process ensures gentle and rapid charging of the battery. For individual adjustment of current, voltage, time and the ideal monitoring of the battery, the Stecamat 821 battery charger has a selection of preset battery profiles and the option of entering new battery profiles. The Stecamat 821 also enables the processing of damaged or totally discharged batteries, ensuring long service life. A backlit display provides rapid information on the state of charge.
The wide range of features make for high flexibility of use. This and the easy handling of the device make for trouble-free operation.


Technical drawing: Stecamat 821 Processor-controlled charger for lead-acid batteries

Product features

  • Besides preset battery profiles there is the option of entering new battery profiles
  • Half the charging time compared to simple, non-controlled chargers with the same rated current
  • Optimal for charging batteries with liquid electrolyte and gel / absorbed electrolyte (AGM)
  • Adjustable rated capacity determines the charging current
  • Suitable for totally discharged batteries
  • Constant battery operational readiness through integrated trickle charge
  • Ready for operation in just a few minutes
  • Charging below the gassing voltage
  • Optimal charging of damaged batteries

Electronic protection functions

  • Protection in the case of wrong or damaged batteries
  • Battery overcharge protection
  • Charger output protected against short circuits, reverse polarity and overvoltage


  • Multifunction graphical LC display with backlighting
  • for voltage, current, charged capacity, charging phase, menu


  • Four cursor buttons for menu selection


  • Control contact for ventilation control system in accordance with DIN EN 50272


  • IO box with mains plug and relay for ventilator control



  •  Stecamat 821 certificate CE · pdf · 0.832 MB

Product data sheet

  •  Stecamat 821 productdatasheet DE · pdf · 0,999 MB
  •  Stecamat 821 productdatasheet EN · pdf · 0.999 MB


  •  Stecamat 821 manual DE · pdf · 3.262 MB
  •  Stecamat 821 manual EN · pdf · 3.261 MB

Product pics, technical drawings, etc.

  •  Stecamat 821 product pic drawing · jpg, 300 DPI, high quality · 0.773 MB
  •  Stecamat 821 product pic drawing · jpg, 72 DPI, web quality · 0.403 MB

Technical data

Charging rated voltage
12 V
24 V
48 V
Charge current
50 A
35 A
18 A
End-of-charge voltage
14.4 V
28.8 V
57.6 V
Trickle charge voltage
13.8 V
27.6 V
55.2 V
Characteristic curve
Grid voltage
230 V AC ±10 %
50 Hz (45 Hz … 65 Hz)
Mains electricity (230 V)
3.7 A
5.5 A
5.5 A
Discharge current during grid failure
1.0 mA
Protection class
Degree of protection
IP 20
Ambient temperature
-20 °C … +60 °C
Cooling principle
regulated fan
Dimensions (X x Y x Z)
248 x 429 x 128 mm
6.0 kg
You are here: