ProBoost DC-DC Charger
A lithium-ready DC-DC charger with dual MPPT solar and alternator inputs, in 25A and 40A models, built to keep your auxiliary battery at 100% wherever the track takes you.
Price range: $445 through $595
Charge on the move, from two sources at once
BMPRO’s ProBoost is a DC-DC battery charger that allows you to charge a secondary battery using solar panels and/or a towing vehicle’s 12V electrical system. Available in two models, ProBoost25 and ProBoost40, it utilises solar and auxiliary inputs to produce a maximum of 25A or 40A, which ensures there is a consistent charge to your battery.
Compatible with both lead-acid and lithium LiFePO4 batteries, the high power density design of the ProBoost provides efficiency of up to 95%. Both models have an ultra-thin design, making them suitable for installation in small spaces, and are resilient to shaking, as well as wet, dusty or muddy environments.
A range of protective features built into the ProBoost, such as overtemperature, overvoltage and undervoltage protection, will guard your charging capacity.
Why ProBoost
Dual input MPPT
Solar and auxiliary (alternator) inputs, with MPPT tracking to get the most from your panels.
Lithium compatible
Purpose-built charge profiles for LiFePO4, alongside STD, Gel, AGM and Calcium.
Chemistry selector
A multi-battery selector switch matches the charge profile to your battery.
IP56 rated
Resistant to dust, water and shock damage for the conditions you actually travel in.
Holds 100% charge
Maintains a 100% state of charge of auxiliary batteries.
Under-bonnet ready
An ultra-thin housing rated for installation in the engine bay.
Following extensive testing across three independent Australian facilities, ProBoost has been OEM selected by Ford for the Ranger Super Duty and Mazda for the BT-50 in recognition of its proven performance, durability and reliability in demanding real-world conditions.
Watch it in action
Common questions
Will ProBoost work with smart alternators?+
What type of fuses should I use with the ProBoost?+
Can I use ProBoost with my BMPRO Power Management System?+
Full specifications
| Specification | ProBoost25 | ProBoost40 |
|---|---|---|
| Electrical | ||
| Input Voltage | 9 – 32V | |
| Solar Input Voltage | 10 – 32V | |
| Maximum Input Current | 27A | 47A |
| Input Fuse Rating | 40A | 60A |
| Solar Input Watts | 500W | 800W |
| Maximum Output Current | 25A | 40A |
| Output Fuse Rating | 40A | 60A |
| Minimum Start Voltage | Lead-Acid: 4V LiFePO4: 0V | |
| Standby Current | <10mA | |
| Turn On Input | Standard Alternator: >13.1V Smart Alternator: >12.0V | |
| Turn Off Input | Standard Alternator: <12.8V Smart Alternator: <11.8V | |
| Charging | ||
| Battery Type | STD, Gel, AGM, Calcium, LiFePO4 | |
| Charge Type | 3-Stage | |
| Maximum Voltage | STD: 14.4V Gel: 14.1V AGM: 14.7V Calcium: 15.3V LiFePO4: 14.5V | |
| Float Voltage | STD: 13.4V Gel: 13.5V AGM: 13.4V Calcium: 13.6V LiFePO4: 13.6V | |
| Physical | ||
| Operating Temperature | -20°C to 80°C | |
| IP Rating | IP56 | |
| Dimensions | 145mm x 130mm x 43mm | 183mm x 130mm x 43mm |
What owners say
ProBoost DC-DC Charger
While I am yet to really put this to the test I am sure it will be as other BMPro products that I have. Good range of products and excellent customer service. Would recommend.
I have installed this Pro-Boost 40 to my 2 x 110AH lithium batteries with 600W of solar, and this system boosts charging capability for my off-grid setup in my caravan. Great product and works efficiently and quickly charges back from 60% up to 100% while totally off grid relying on Solar only to charge up.