Battery State-of-Charge Instruments

Curtis Instruments has long been the technological leader in the accurate measurement of state-of-charge of lead acid batteries for battery-powered industrial vehicles.

Curtis offers the widest range of Battery State-of-Charge (BSOC) instruments in the industry and continues to develop new algorithms to improve accuracy as well methods of measuring the state-of-charge of other battery chemistries and alternative fuel sources.

To review more technical information regarding state-of-charge measurement, please see
Curtis Battery Books I and II.

Models

Display
Hour Meter
Output

Mounting



Interconnect


Low "Fuel"
Warning

Adjustable



Housing



Keyswitch Input
BDI Reset Method
Operating Voltage
803

Tri-Color, 10-bar LED
Yes
1 Amp Relay

U-bracket



Molex Connector


Two LED Bars
Flash Alternately

Yes



52mm round



Yes
CTR, OCR
12-80 VDC
Data Sheets
Manuals
FAQs
841

8-character Dot Matrix LCD
Yes
1 Amp Relay

U-bracket



Molex Connector


Amber LED 20%
Red LED 10%

No



52mm round



Yes
CTR, OCR
24-80 VDC
Data Sheets
 
FAQs
906
Red, 10-bar LED or
Tri-Color, 10-bar LED
No
Logic Level 0-5V
U-bracket (D,R) or
Snap-fit bracket (J,Y,Z) or
Screws/Nuts (F,T)
3/16" or 1/4" Fast-On Terminals
or Packard Connector
or PCB Mount Pins

Two LED Bars
flash alternately

No
52mm round (R) or
24mmx48mm Rectangular (D) or
23mmx36mm Rectangular (F,J,T) or
28mmx41mm Rectangular (Y,Z)
Yes
CTR, OCR
12-48 VDC
Data Sheets
Manuals
FAQs
908

Tri-Color, 10-bar LED
No
1 Amp Relay

U-bracket



Molex Connector


Two LED Bars
flash alternately

No



52mm round



Yes
CTR, OCR
12-80 VDC
Data Sheets
Manuals
FAQs
enGage®II

Fixed Segment LCD
Yes
0.5 Amp MOSFET

Snap-fit Bracket



Amp or Molex Connector

Two LCD Bars Flash Alternately
& Front-Face LED Flashes

Yes (via buttons)



52mm round



Yes
CTR, OCR
12-48 VDC
Data Sheets
Manuals
FAQs