Charging booster car kit for motorhome, craftsman and commercial vehicle

The intelligent IVT charge booster is used to charge lead-acid, lead-gel, AGM and lithium secondary batteries while driving in vehicles with 12 V systems.

The versatile charge booster has two charging stages

In 30 A mode, the device can be used to recharge the second battery with up to 30 A.
In 10 A caravan mode, the charge booster enables batteries in a caravan or trailer to be recharged via the plug coupling. In this mode, the charging current is limited to a maximum of 10 A.

The intelligent IVT Charging Booster is a clocked up/down converter that compensates for the fluctuating alternator voltage. As soon as an alternator signal (D+) is applied to the charging booster, it automatically goes into operation. The connected second battery is charged independently of the alternator voltage. Switching to charge retention is current-dependent and automatic.

The Charging Booster car set includes all materials for the electrical connection of the booster to the batteries in 30 A charging mode.

Note: Additional consumers should only be connected to the second battery.

The main advantages of an IUoU charging booster

By using a charging booster, powerful consumers can be operated on the second battery even when the engine is running.
Safe starting, even after longer idle times (without charging), remains guaranteed.
The service life of both batteries (starter battery and on-board battery) is considerably extended by an optimally charged and maintained second battery.
When the nominal capacity is reached, the booster switches to trickle charge mode.
Different types of batteries can be charged with the help of the charging booster
The IVT Charging Booster can also be used in solar island systems with separate 12 V systems.

Important characteristics and features

Features & Functions

Charging booster – mandatory in Euro 6 vehicles

Alternators with energy-saving charging strategies are often installed in Euro 6 vehicles. These alternators are subject to very strong fluctuations of the charging voltage depending on the driving condition (e.g. in the Mercedes Benz Sprinter between 12.6 V and 15.0 V).

Without a charging booster, this prevents optimum charging of the leisure/second battery. With a fully charged battery (e.g. via the 230 V mains) there is even a risk of discharge.

Due to these circumstances, the use of a charging booster is absolutely necessary in EURO 6 vehicles.

Suitable for 12 V solar systems

The IVT Charging Booster can also be used in stand-alone solar systems with separate 12 V systems. For this purpose, the D+ signal must be routed to the device via a switch.

Suitable for 12 V solar systems

E-certification: Suitable for permanent installation in vehicles

The IVT Charging Booster meets the legal requirements of the ECE regulations and therefore has the E-certification. It is suitable for permanent installation in all vehicles with road approval, such as passenger cars, utility vehicles or other vehicles with an on-board voltage of 12 V.

Suitable for batteries with a capacity from 35 Ah

The electronic is suitable for all 12 V batteries from a capacity of 35 Ah (lead-acid, lead-gel, AGM and lithium).

The charging current is limited to max. 30 A in regular mode by the charging booster (constant current charging IUoU). This prevents overloading of the cut-off relay and the cable harness due to high equalising currents.

Extensive protection functions integrated

The IVT Charging Booster is equipped with the following protection functions as standard:

Deep discharge protection for starter battery
Temperature management/overtemperature protection
Short circuit protection at output
Overvoltage protection for input and output

Operation and display elements

1 Temperature and power controlled fan
2 Connection for temperature sensor
3 Connection for starter battery
4 Connection for second battery
5 Connection for D+ signal
6 Status LED: charging status
7 Status LED: battery status

8 DIP switch for mode & battery selection
9 3-pole plug (not assigned)
10 Solid metal housing
11 Metal rails for secure installation

Recommended connection cables

Recommended cable cross-sections for connection to the charging booster

For safe and smooth operation, please use sufficiently dimensioned connection cables and fuses for connecting the charging booster (see following table).

Recommended connection cables for charging booster use in 30 A mode

30 A mode	Cabel
Connection cable starter battery (+)	Wire cross-section: 10 mm² (Length up to 6 m) 16 mm² (Length from 6 m) Fuse protection: 40 A
Connection cable starter battery (-)	Wire cross-section: 10 mm² (Length up to 6 m) 16 mm² (Length from 6 m) Fuse protection: /
Connection cable second battery (+)	Wire cross-section: 10 mm² (Length up to 6 m) 16 mm² (Length from 6 m) Fuse protection: 40 A
Connection cable second battery (-)	Wire cross-section: 10 mm² (Length up to 6 m) 16 mm² (Length from 6 m) Fuse protection: /
Connection line for D+ signal	Wire cross-section: 1.5 mm² (Length up to 10 m) Fuse protection: 2 A

Recommended connection cables for charging booster use in 10 A caravan mode

10 A caravan mode	Cabel
Connection cable starter battery (+)	Wire cross-section: = 2.5 mm² (Length up to 10 m) Fuse protection: 15 A
Connection cable starter battery (-)	Wire cross-section: = 2.5 mm² (Length up to 10 m) Fuse protection: /
Connection cable second battery (+)	Wire cross-section: = 2.5 mm² (Length up to 10 m) Fuse protection: 20 A
Connection cable second battery (-)	Wire cross-section: = 2.5 mm² (Length up to 10 m) Fuse protection: /
Connection line for D+ signal	Wire cross-section: = 2.5 mm² (Length up to 10 m) Fuse protection: 2 A

Selection of charging mode and battery type

Fig. DIP switch on the back of the charge booster

The selection of the battery type is made using DIP switches 1 and 2.
The 30 A or 10 A charging mode is set using DIP switch 3.
The corresponding configuration can be found in the manual (see Downloads).

Power- and temperature-controlled fan

Fig. lateral: Power- and temperature controlled fan

The power- and temperature-controlled fan minimizes the noise generated by the charging booster, by only switching it on when required.

Compact and robust design – small dimensions

Compact and robust design
Thanks to the selected components, the charging booster has compact dimensions. The high-quality inner workings are protected by a sturdy metal casing.

Note on mounting
The device is suitable for wall and floor mounting. The installation position can be selected as desired. In order to keep charging losses as low as possible, the IVT Charging Booster should be mounted close to the second battery to be charged.

Dimensioning IVT Charging Booster 12 V, 30 A

Dimensioning IVT Charging Booster 12 V, 30 A

Car set – includes connection material for operation in 30 A charging mode

The Charging Booster car set includes all components necessary for a safe connection and operation of the IVT Charging Booster in the regular 30 A charging mode.

	10 m Single wire cable 16 mm² Item no. 911016 To the product >>
	2 x Mini-ANL fuse holder Item no. 911011 To the product >>
	2 x Mini-ANL fuse 40 A Item no. 911013 To the product >>
	1 x Fuse holder extension Item no. 911010 To the product >>
	1 x Standard flat fuse 2 A Item no. 911012 To the product >>

Optional accessories: temperature sensor

The optionally available temperature sensor can be used to adjust the charge of the second battery in a temperature-controlled manner. This function is not activated if the temperature sensor is not connected.

The compensation is -25 mV/°C. The compensation is additionally limited between 12.6 V and 15.7 V.

Temperature sensor,
suitable for Charging Booster IVT 12 V, 30 A
Item no. 920061
To the product >

Recommended use

The installation of the IVT Charging Booster is recommended in all vehicles with 12 V system, where a second battery is required, e.g. for the operation of an inverter.

The intelligent IVT Charging Booster guarantees optimal and gentle battery charging in cars, vans, caravans, motor homes, coaches, trucks, construction machinery, tractors and many more.

The installation of the IVT Charging Booster is recommended if different battery types are to be charged at the same time.

The intelligent IVT Charging Booster is equally suitable for lead-acid, lead-gel, AGM and lithium batteries with a capacity of 35 Ah or more.

The installation of the IVT Charging Booster is recommended for 12 V solar island systems with separate 12 V systems.

3 year manufacturer warranty

IVT products are manufactured to a high quality and following strict quality guidelines. We are certain about the longevity so that we add another year to the statutory manufacturer warranty free of charge. Rechargeable batteries and batteries are excluded from this warranty.

Delivery content

Charging booster IVT 12 V, 30 A, including

D+ connection cable, 1 m
Operating instructions DE, EN, FR, NL

Connection material car

10 m Single wire cable 16 mm²
2 x Mini-ANL fuse holder
2 x Mini-ANL fuse 40 A
1 x Fuse holder extension
1 x Standard flat fuse 2 A

Technical Data

Input voltage	9 V DC to 16 V DC
Output voltage	9 V DC to 15 V DC
Power consumption, max.	420 W (30 A mode) 140 W (10 A caravan mode)
Charge current, max.	30 A (30 A mode) 10 A (10 A caravan mode)
Supported types of battery	lead-acid, lead-gel, AGM, lithium
Battery capacity	from 35 Ah
End-of-charging voltage	14.4 V lead-acid 14.7 V lead-gel, AGM 14.4 V lithium
Trickle charging	13.8 V lead-acid 13.7 V lead-gel, AGM 14.4 V lithium
Temperature range	-10 °C to +70 °C
Charging characteristic	IUoU (current-dependent switchover to charge retention)
Temperature compensation	-25 mV/°C (only with connected temperature sensor) Temperature compensation limitation between 12.6 V and 15.7 V
Switchover to trickle charging	I < 2.0 A
Switchover to charging	I > 3.0 A
Charge current limit	100 % charge current at U_in > 11.7 V 0 % charge current at U_in < 11.0 V
Own power consumption	< 1 mA (no D+ signal applied) < 80 mA (normal mode) < 20 mA (output disconnected)
Control signal (D+)	2 V DC to 16 V DC
Control current (D+)	< 1 mA
Efficiency factor	= 90 % (with max. charge current)
Material	Metal
Dimensions (W x H x D)	133 x 90 x 49 mm
Weight	550 g

Charging Booster car set IVT 12 V, 30 A, incl. connection material