Votronic 1269 LCD battery computer 400 S Smart Shunt

Compared to its predecessor, the Votronic LCD Battery Computer 400 S (MPN 1269) has a significantly more accurate measuring shunt. The new Smart Mess Shunt is included in the scope of delivery. In addition to the higher accuracy, the power consumption has also been further reduced. In terms of functionality, dimensions, etc., everything is identical to the previous model.

The following values are measured, calculated, and displayed by a microprocessor:

• Battery voltage of the on-board battery 7 to 32 V, internal measurement resolution 0.1 V Allows conclusions to be drawn about battery behavior under different loads and is used to check the function of, for example, the charger, the solar system, Alternator, etc. Flashing warning indicator in case of overvoltage.
• Battery current (charging/discharging) +/- 0 to max. +/- 1800 A, internal measurement resolution 0.1 A
• Control of discharge currents (load) by consumers, indicated by a "–" sign, control of charging currents, indicated by a "Charge" sign.
• Battery capacity (Ah and %)
• Remaining charge from 0 Ah / 0% (empty) to nominal capacity max. 2000 Ah / 100% (full)
• Battery voltage 2nd battery (e.g., starter battery), 7 to 32 V (volts), internal measurement resolution 0.1 V
• Switching output freely programmable and momentary (PNP, positive potential 12V / 24V, max. 0.5A)
• includes remaining charge indicator

How much charge does my on-board battery actually have left? Is the battery really full? Why is energy being drawn from the battery even though the consumers are switched off? The VOTRONIC LCD battery computer S answers these questions with precision down to the percent (%) and ampere hour (Ah). At the touch of a button, it provides comprehensive information about the current state of charge of the battery, the flowing battery currents, and the voltage level of the battery. The LCD Battery Computer S was developed based on the highly proven VOTRONIC LCD Battery Computer. The versatile, easy-to-use display functions have been enhanced by a white-illuminated, clear LCD display that is easy to read even from a distance and in poor lighting conditions.

The device is in constant contact with "its battery" and thus registers and evaluates all battery actions. All charging and discharging currents are meticulously counted, and battery size, self-discharge, battery load, etc. are taken into account using programmed characteristic curves. The remaining capacity of the battery is then calculated from the measured values and the battery size. The result is the correct display of the state of charge (the capacity that can still be extracted, residual charge) of the on-board battery as a numerical value in ampere hours ("Ah") and as a percentage ("%"), as well as a clear fill level bar, similar to a fuel gauge. The LCD battery computer S is suitable for all battery types (acid, gel, AGM, lithium adjustable) with 12V and 24V battery voltage.

Of course, the current battery voltage ("V") and the current battery current ("A") are also available on the display. Discharge currents (consumers) are indicated by a minus sign. Charging currents are also indicated by an easily readable "Charge" symbol. Independently of this, there is another display option for the voltage of a second battery, e.g. for monitoring the vehicle's starter battery.

The LCD battery computer S has a freely programmable switching output for control, monitoring, and warning purposes, e.g., to automatically switch consumers or issue a warning depending on the state of charge of the on-board battery (0-100%). Switch-on and switch-off points can be freely set in % and independently of each other, enabling any switching functions. In addition, these can be manually overridden at any time at the touch of a button.

Application example: Automatic protection of the battery against harmful deep discharge; consumers are switched off precisely according to the state of charge, e.g., at less than 25% state of charge. At the touch of a button, an EMERGENCY ON function is available to continue supplying the consumers. The device can therefore also be used as a remote-controlled battery main switch (on/off) with deep discharge protection.

A plug-in connection cable connects the display to a robust precision measuring resistor (shunt), which is connected directly to the negative terminal of the on-board battery and records the battery's voltage and current. This is also where the switching output for connecting signal transmitters or powerful switching relays is located.

Important information about the Smart Shunt:
The selection of the appropriate Smart Shunt (100 S, 200 S, or 400 S) is based solely on the maximum continuous load of the consumers (A) and not on the total battery capacity (Ah).

Note:
The devices are designed to work with the measuring shunts included in the scope of delivery and cannot be operated in conjunction with other measuring shunts or exchanged with each other!

The device fits in with the VOTRONIC modular system both visually and mechanically (uniform height of 85 mm) with the other display modules, and the low installation depth of only 22 mm allows it to be mounted in almost any location.

Scope of delivery
- 1x battery computer
- 1x Smart measuring shunt 400A (new version 2017)
- 1x ground strap
- 1x control cable 5m
- 4x Mounting screws
- 1x operating instructions
- 1x Drilling template