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

2 year warranty

Compatible with BMPRO BP35 and J35



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 Power Management Systems.
A range of protective features built into the MiniBoostPRO will guard your caravan or camper trailer’s charging capacity.


Auxiliary Input Voltage

9V - 14.6V DC

Solar Input Voltage

9V - 25V DC

Output Voltage

Gel: 14.2V

AGM/Wet: 14.4V

LiFePO4: 14.6V

Float Voltage

13.6V DC

Output Current*

Auxiliary Bypass: max. 30A

Auxiliary Boost: max. 22A

Solar Charging: max. 30A (360W)

Blending Charging: max. 30A

Quiescent Current Draw

Auxiliary/Primary Battery: <25mA

Secondary Battery: <18mA

Operating Temperature

-20°C to 80°C


160mm x 131mm x 41mm

IP Rating



RCM Approval, EMC CISPR 11: 2015 Class B, FCC Part 15

*Output reduced at elevated temperature.


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

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 battery positive terminal.

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