State Of Charge Gauges

The State of Charge Gauge

The Altertek State of Charge Gauge is intended for lithium batteries in portable or fixed applications where a low cost state of charge display is required.

Measuring both current and voltage allows the state of charge to be accurately counted, rather than estimated from the voltage alone.

State of charge is displayed using 10 LEDs or an optional display.

A precision coulomb counter integrates current through a sense resistor (or external shunt) between the battery’s positive terminal and the load or charger.

The Altertek State of Charge Gauge features programmable high and low thresholds for measured quantities. If a programmed threshold is exceeded, the device communicates an alert using the on board LEDs, external alarm contacts and optional screen.

Bulkhead Mount SOC PCB with Display

Model GG1117-B



Length 100mm

Operating Temperature Range -40 - +60 Deg C

Width 50mm

Storage Temperature Range 20 Deg C +/- 5 Deg C

Depth 20mm

Humidity 50% RH

Weight 2KG

Product Features


Non Parasitic

Hardware Based Over and Under Voltage Protection check-green

Passive Cell Balancing

Dual Cell Temperature Measurement check-green

State of Charge Indication

Onboard Circuit Temperature Measurement check-green

Fault Indicator

Built in self tests check-green

Balance Indicators

Fail on* check-green

2 x Software Controlled Relay Drivers

* Fail on is still subject to hardware based safety

External Fault Sensor Input

CAN Bus Communication

Operating Limits


Nominal Voltage 12, 24, 36V

Directives: CE

Balance Current 1A Max


Relay Driver Current 300mA Max


Power Consumption 1W


Max Number of cells or strings 12

Standards: EN1111111

Max Serial Voltage 96v


Max Parallel Capacity XXX


Interested in our State of Charge Gauge?

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    5 Year Warranty

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    Maintenance Free

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    Free Support

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    On board Communications

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