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ULTRA DUO PLUS 80 Graupner charger
[GR Ultra D 8]

Computer-controlled universal battery charger with two channels for charging, discharging and balancing your batteries. Supports 1-8s Li-Po, 1-18 NiMH/NiCd and with a maximum balancing current up to 1,000mAh.

The Ultra Duo Plus 80 supports charging at a rate of up to 20A, providing its maximum possible output power of 1000W when powered by a 28V DC power supply. (11-28V DC supported) The maximum discharge power is 50W per channel with a maximum discharge current of 10A.

Includes two universal balance adaptor boards for JST-XH (Desire Power, Gens e.t.c), Hyperion/PolyQuest and Graupner/Kokam type balance connectors.


  • Computer-controlled universal fast charger
  • 12 DC input
  • Two equal-value independent or dependent (CV-link mode) charge outputs
  • Graupner balancer socket for 2 x 1 ... 8 NiCd / NiMH / LiPo / LiIo / LiFe batteries
  • 20 battery memories for storing all essential battery parameters
  • Automatic charge, discharge, capacity measurement, battery care, and conditioning program for NiMH-, NiCd-, LiPo-, LiIo-, LiFe batteries as used in model building
  • Ultra-simple to operate, with clearly arranged program structure, six keys, and rotary knob
  • Two high-contrast LCD screens (128 x 64) with blue backlighting: 21 x 8 characters for displaying all relevant parameters or charge / discharge curves
  • Charge / discharge capability for NiMH-, NiCd-, LiPo-, LiIo-, LiMn-, LiFe or Pb (lead-acid) batteries
  • Delta-Peak Cut-Off detector for NiMH and NiCd cells with variable Delta-Peak voltage, ensuring full charges to 100% capacity
  • Single-cell charging, ideal for glowplug batteries or for cell selection
  • Constant current / constant voltage charge method for charging LiPo, LiIo, LiFe, Pb cells
  • Declining current curve after final charge voltage, with automatic charge cut-off
  • Charge processes: ?NiCd / NiMH: ?automatic, normal, linear, GMVIS, IMPULSE, REFLEX, REPEAK, staged charging LiPo/LiIo/LiFe: automatic, CC/CV, quick charge, storage programme, CV-link
  • Special charge/discharge capability for storage of batteries
  • Special discharge balancer program for NiCd/NiMH batteries
  • Data memory for comparison of all important battery data
  • Lead-acid battery charge programs with optimised charge curve, discharge facility, variable discharge current for determining battery capacity and residual capacity
  • Program for tyre heating covers order no. 94711 with temperature control
  • Motor run-in and test functions for brushed electric motors
  • Power supply unit function: variable voltage and current limiting
  • Protected against short-circuit, overload, and reversed polarity
  • Switchable buzzer, selectable melody
  • Variable safety timer
  • Variable max. charge capacity
  • Selectable language: English / German / French / Italian
  • Internal battery resistance display
  • Single cell voltage display for 2 x 2 - 8 cells in NiCd / NiMH / Li modes
  • PC-USB interface for displaying battery curves on the PC screen
  • Ready to connect
  • Dimensions (LxWxH)    180 x 170 x 70    mm       
  • Disconnection NiMH/NiCd    Delta Peak einstellbar           
  • Balancer socket    2 x 1 ... 8 NiMH/NiCd/LiPo/Lilo/LiFe-Zellen           
  • Max. balancing current    NiMH/NiCd: 300 mA; LiPo/Lilo/LiFe: 1000     mA       
  • Operating voltage     11 ... 28 V/40 A DC    V       
  • Operating voltage     DC: 11 (max. 360W) ... 28 (max. 1000W) V    V       
  • Discharge current     (2 x max. 50 W) 0,1 ... 10     A       
  • Charge output    2           
  • Charge facility    1 ... 18 NiMH-/NiCd-Zellen, 1 ... 8 LiPo-/Lilo-/LiMn-/LiFe-Zellen, 1 ... 6, 12 Pb-Zellen           
  • Charge current, A    2 x 0,1 A ... 20 A    A       
  • Max. discharge current    0,1 - 10     A   

This product was added to our catalog on Monday 20 October, 2014.
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