30A lithium DC–DC charger with solar input



  • 30A multi-stage lithium DC-DC charger
  • Dual input solar/aux up to 30A
  • Multi battery chemistry selector
  • Suitable for modern smart alternators
  • BMPRO BP35 and J35 compatible
  • BMPRO signature durability and ease of use
  • 2 year warranty



MiniBoostPRO charger in packaging

MiniBoostPRO packaging

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MiniBoostPRO Overview

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MiniBoostPRO Tech Tips

Rapidly charge your deep cycle battery while you drive

BMPRO’s MiniBoostPRO is a compact Lithium DC-DC charger with solar input, specially designed for the RV market. The MiniBoostPRO battery charger offers effective charging of your caravan, 4WD or camper trailer’s house battery from the towing vehicle’s electrical system.

Blending both solar and auxiliary inputs, the MiniBoostPRO provides a combined charging current of up to a maximum of 30A, with a preference to solar. It features proprietary technology designed to charge from modern car alternators. Moreover, it can be used with LiFePO4 batteries as well as with traditional lead acid batteries.

The MiniBoostPRO provides a multi stage charging profile.
It functions when wired directly to 12V batteries and enhances BMPRO’s BatteryPlus35 and J35 battery management systems.
A range of protective features built into the MiniBoostPRO will guard your caravan or camper trailer’s charging capacity.

Product Specifications

Auxiliary Input Voltage 9-15V DC
Solar Input Voltage 9-25V DC
Output Voltage Gel: 14.2V, AGM/Wet: 14.4.V,  LiFePO4: 14.6V
Float Voltage 13.6V
Output Current Auxiliary Bypass: max. 30A; Auxiliary Boost: max. 22A; Solar Charging: max. 30A; Blending Charging: max. 30A
Quiescent Current Draw Auxiliary/Primary Battery: < 25mA; Secondary Battery: < 18mA
Operating Temperature -20°C to 80°C
Dimensions 160mm x 131mm x 41mm
IP Rating IP20
Standards RCM Approval, EMC CISPR 11: 2015 Class B
Battery Chemistry Gel, AGM/Wet, LiFePO4


No, as this is due to the MiniBoostPro’s housing being physically and electrically connected to the negative terminal. Always be cautious of accidental connections from the housing to the batter y positive terminal.

The MiniBoostPRO Lithium DC-DC charger cannot be used inside an engine bay as it is rated to IP20.

The MiniBoostPRO is capable of charging multiple batteries installed in parallel.

No, the MiniBoostPRO will not connect if the voltage rating of your home solar panels is over 25V

The MiniBoostPro features a BMPRO-designed solar controller.

This is not recommended as this could degrade the MiniBoostPRO’s functionality. Refer to recommendation of a service centre.

The MiniBoostPRO works only when the battery is connected to the output. You can connect your appliances to a battery, but the MiniBoostPRO output will have to be connected at the same time.

It is recommended to have a suitably qualified person wire in the relay into your car and the MiniBoost as close as possible to the house battery to ensure optimal performance