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Undervoltage protection for on-board and starter battery
The VOTRONIC Battery Protector 40 and Battery Protector 100 devices are connected between the supply battery and the consumer and are suitable for all lead-acid battery types (acid, gel, AGM) and makes. They protect the battery from dangerous deep discharging as well as the consumers and equipment from undervoltage and overvoltage and, controlled by an external switch, can also be used as a remote-controlled battery main switch.
Operation as a battery protector:
- Visual display of the operating status via two LEDs
- Audible alarm can be activated (sounds when the pre-warning threshold is reached or when switched off)
- Output for external alarm display (max. 0.3 A, short-circuit proof)
- Suitable for all common lead-acid battery types with 12 V or 24 V nominal voltage (acid, gel, AGM,...)
- Suitable for lithium batteries (LiFePO4)
- Can also be used as a powerful battery main switch with protective function
- Various switching thresholds configurable
- The switch-off can be cancelled manually at any time using the EMERGENCY ON function
Operation as a switch unit:
- Can be used as a battery main switch
- Electronic delay prevents excessively fast reaction, e.g. in the event of voltage dips caused by switching on heavy loads.
- Visual indication of the operating status via two LEDs
- Alternatively, it can be used as a remote-controlled power relay ("switch unit"), e.g. on the LCD battery computer S.
Technical data
| Device type | Type No. | Operating Voltage [V] | Switching current continuous/short [A] | Switching threshold Undervoltage [V] | Reset point Undervoltage [V] | Over- voltage OFF/ON [V] | Weight [g] |
| Battery Protector 300 | 3084 | 12 and 24 | 300 / 600 | 10,6 / 11,5 / 11,8 1 9,5 - 12,2 1,2 | 12,4 / 12,5 / 12,8 1 12,5 1,2 | 16,0 / 15,0 1 | 680 / 90 |
| 1 for 24 V operation Values x 2 2 Automatic switching thresholds | |||||||
| Dimensions (W x H x D) | Relay: 105 x 62 x 57 mm / Electronics: 90 x 60 x 33 (incl. mounting flanges, without connections) | ||||||
| Test mark: | CE, E-test (EMC/vehicle directive) | ||||||
| Scope of delivery | Operating instructions | ||||||
| Temperature range: | -20 / +50°C |
Safety instructions and warnings
Safety instructions for Votronic Battery Protector 300
- The Votronic Battery Protector 300 is only suitable for use in vehicles and boats with an on-board voltage of 12 V or 24 V.
- When connecting the Battery Protector, the power supply to the vehicle or boat must be switched off to prevent short circuits.
- The Battery Protector must not be installed near heat sources or flammable materials.
- The device must not be immersed in water or other liquids.
- Ensure that the Battery Protector is not overloaded and that the maximum current is not exceeded.
- The Battery Protector is not suitable for use with lithium batteries.
- All manufacturer's instructions must be followed.
Operating instructions for Votronic Battery Protector 300
- The Battery Protector must be calibrated before it is used for the first time.
- The status of the Battery Protector can be read off the LED display.
- If the battery is disconnected or the voltage falls below the minimum voltage, the Battery Protector switches off automatically.
- The device has an automatic charge equalisation function.
- All manufacturer's instructions must be followed.
Manufacturer contact information
Manufacturer Contact
VOTRONIC Elektronik-Systeme GmbH
Johann-Friedrich-Diehm-Str. 2
36341 Lauterbach
https://www.votronic.de/kontakt/