SBS-4815CT: Battery Capacity Tester

Battery Discharger / Capacity Tester for 24/48 Vdc Battery Systems

battery discharge and capacity tester for 24V and 48V battery systems


- SBS-4815CT Data Sheet

- User's Manual

Smart Load Bank Manager Software Download


  • Can be powered from DC or AC power supply
  • Weighs only 21 lb.; designed for portability
  • Can be slaved with other load banks of the
    same voltage to increase discharge current

portable battery discharge and capacity tester for 24V and 48V battery systems


  • Telecom
  • Forklifts, Golf Carts & AGVs
  • Power Plants
  • Oil Companies


  • Main unit
  • Instruction manual
  • Wireless 2/6/12 Volt modules (qty. 6 +1 spare)
  • Computer analysis software
  • DC test (power) cables
  • 3 ft. AC power cable
  • RS232 wire
  • Carrying case with wheels

portable battery discharge and capacity tester rear side

The SBS-4815CT is a fully programmable and portable constant current load bank with detailed data acquisition and display capabilities.

Built-in memory continuously records discharge data including: overall system voltage, current and individual cell voltages (when modules are installed).


  • Voltage and current range: 20–60 Vdc / 0–150 Amps
  • 5.7" LCD touch screen
  • 4 adjustable stop points and multiple alarm designs to control the
    process intelligently
  • Wireless modules that measure and record individual cell voltages
    during testing
  • View test data in real time on screen or with computer via RS232
  • Download data after discharge to USB drive
  • Computer software for capacity evaluation and report generation

Internal Memory

  • Automatically protects and saves data from an unexpected test stop/end
  • Menu interface provides data management operations for parameter settings, test results review, and download by RS232 or USB device to the computer software
battery discharger software screenshot

Analytical Software

  • Powerful analytical software calculates test results and reports cell/battery conditions and capacity
  • Software interface displays detailed graphs and charts
  • Ability to export raw data into customized Excel reports

Wireless Modules

wireless modules for SBS-200CT
  • Included for collection of cell voltage data during testing
  • Advanced technology that wirelessly communicates readings between modules and load bank
  • For 2/6/12V batteries
  • One module supports voltage measurements for up to 4 cells
  • Easily locate failed cells in battery and estimate actual capacity of each cell

Parallel Operation

The SBS-4815CT has a 0–150 Amp current range; however it is possible to parallel additional load banks of the same voltage range with the SBS-4815CT to increase current draw.

With the optional P/N 8400-600A DC clamp the user can discharge up to 750 Amps and the SBS-4815CT will monitor the total DC current being drawn by up to three load banks in parallel.

Discharge Protection

Stop Point Setting Range
Low System Voltage 0–60.0V
Discharge Time 0–99 Hour 99 Min.
Discharge Capacity 0–9999 Ah
Cell Low Voltage 0–15.00V


Malfunction LCD Prompt Warning Beep
Input Over Voltage
Discharge Time

Ordering Information

Part No. Description
SBS-4815CT Battery discharge and capacity tester

Accessory Ordering Information

Part No. Description
8400-600A 600 DC Current Clamp
SLAVE-CAB-8400>8400 Paralleling Cable, SBS-4815 to SBS-4815/8400
SLAVE-CAB-8400>S Paralleling Cable, SBS-4815 to S-Series
SLAVE-CAB-8400>(2)S Paralleling Cable, SBS-4815 to (2)S-Series
BCT110/220-1000 750 Watt Voltage Transformer 110/220 Vac 50/60 Hz
Pelican case upgrade available


DC Volt Range 20–60 Vdc
DC Current Range 20–40 Vdc: 0–75 Amps
40–60 Vdc: 0–150 Amps
Accuracy & Resolution ±0.5%, 0.1 Amp
Display 5.7" LCD Color Touch Screen
DC Power Supply 20–60V
AC Power Supply 120 Vac, 50/60 Hz
Communications Port USB / RS232
Internal Memory 8MB Flash
Main Tester Size 16.25 x 9.0 x 9.0 in.
Carrying Case Size 20.5 x 19.7 x 15 in.
Weight 21 lb. (main tester only)
62 lb. (tester, accessories, case)

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