Baintech DC-DC Lithium Battery Innovation

Baintech has launched a new 150Ah Lithium Battery with In-built DC-DC Charger and DC-DC reverse switch to charge your starter battery from your lithium battery. Providing 100A of continuous discharge; parallel to provide higher power requirements.

  • Features:
  • In-built 20A DC-DC Charger
  • 150Ah Capacity
  • Compact size : (LxDxH)  265 x 163 x 240
  • Australian Engineered
  • 5-year warranty
  • Reverse switch to charge starter battery
  • Lightweight 14kg
  • Prismatic lithium iron phosphate cells

Other features of the DC-DC charger include three (3) switches:

Current Selection Switch

This switch allows you to select the amp charge rate from 10A to 20A.

Most vehicle cigarette sockets on the dashboard are rated for 10A only. So, if you are using the 10A vehicle cigarette socket to charge the lithium battery then select the 10A on the rocker switch.

If your vehicle is fitted with a 20A connection, or you are connecting directly to the start battery, then you can select the 20A charge setting on the battery.

Beware: If you select 20A when connected via a standard cigarette socket, you may blow the fuse connected to that circuit in your vehicle.

Direction Switch

This switch provides the ability to reverse the DC charge direction (Out) so that the lithium battery can be used to charge a flat vehicle start battery. The normal charge direction (In) uses the vehicle alternator to charge the lithium battery via the start battery.

Note – this feature is not intended to ‘jump start’ the starter battery. It is a controlled charge (at the selected current based on the switch, 10A or 20A). So, you might need to wait for 30-60 minutes before the start battery is sufficiently charged to crank the vehicle engine, depending on how flat the start battery is.

External Shunt Switch

An external shunt can be applied across the two (2) black negative terminals to measure current in and out of the battery for accurate state of charge measurement, including charge current from the built-in DC-DC charger.

If an external shunt is applied, select Yes.

If there is no external shunt applied (which is the default case) select No. This connects the 2 black negative terminals together internally.

Baintech dc dc 150Ah

View our entire lithium range here

Baintech 110Ah Slimline Lithium Battery User Guide

Baintech 110Ah Slimline Lithium Battery User Installation Guide


Baintech dc dc 110Ah slim lithium battery


Why Choose Lithium?

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Why Lithium batteries are everywhere!

Lithium Batteries have been used for years in smart phones and power tools because they are powerful and lightweight. Lithium Battery Systems have developed the control systems to bring the power of lithium battery chemistry into batteries designed for cars, boats, RV’s, caravans and home storage. 

What lithium cells are best and why?

There are several types of lithium-ion chemistry on the market, including lithium cobalt oxide, lithium manganese oxide, lithium nickel manganese cobalt oxide and lithium iron phosphate. 

The cells come in different packages including cylindrical prismatic and soft pouch. Cylindrical look like bigger AA batteries while prismatic cells are rectangular about the size of a small book. Pouch is a soft jelly like material which needs outer casings. Lithium iron phosphate is the safest chemistry and prismatic cells are the most efficient and mechanically robust way to package the stored energy.

Beware of lithium batteries using the small cylindrical cells soldered together in plastic boxes using a cheap low quality BMS. Cylindrical cells need sometimes up to 100 spot welds to join them together whilst prismatic cells have sold metal posts that withstand vibration and are suited to be used in tough environments.

So why use lithium over lead acid batteries?


Lithium batteries allow you to pull far more amps out of the same size battery systems.


Lithium batteries are less than half the weight of the equivalent lead acid battery. 


Lithium batteries provide more usable capacity than lead acid batteries. Deep discharging does not affect the life of a lithium battery the way it does with lead acid batteries. You can use the battery longer before needing to recharge, without damage to the battery.


Lithium batteries are rated for 2,000 – 5,000 cycles and much more if used carefully, giving you several times the life expectancy of standard lead acid batteries.


When considering the usable capacity and lifespan of lithium batteries, they work out cheaper than lead acid. When you add the cost and inconvenience of refitting new lead-based batteries every few years the total cost of ownership over the long term is far better with lithium batteries.


Lithium batteries charge more efficiently, and don’t require as many stages during charging. Therefore, they will charge faster, and hold more of the energy from solar panels and other charging device


Pack more fun, not more weight - Lithium Battery Range

Stay under weight, stay compliant

Failure to abide by the towing regulations and weight limits (GVM), can result in a hefty fine, or worst case scenario in the case of an accident, refusal of the insurance claim.

When considering battery choices for your 4WD or caravan setup, there are a few things you want to consider. On a school holiday adventure when battery storage is a necessity, do you have enough space in the 4WD to cater for two larger capacity batteries? The typical size of 2 x 100Ah AGM batteries easily weighs in at 65kg. Can you afford the space and weight these batteries incur instead of your camp essentials?

The Lithium Solution

Considering the above, this is where the Lithium Batteries take the number one position on all levels. Not only are they efficient, powerful, and light, they come in unique sizes that can easily be installed in many locations of your vehicle, like under seats, in drawer wings, or false floors. 65kg can easily be reduced to 14kg, while taking up significantly less space.

Baintech Lithium batteries are constructed using the latest generation prismatic lithium iron phosphate cells and an inbuilt Battery Management System (BMS). The Baintech battery range are perfect for RVs, caravans, and 4WDs.

Baintech Lithium Battery Range

Australian made, with 5 Year Warranty, the NEW Baintech Lithium Range is here!

The light weight 110Ah, 150Ah and 225Ah capacity SP battery range from Baintech are constructed using the latest generation prismatic lithium iron phosphate cells.

All models contain an inbuilt Battery Management System (BMS) that provides up to 100A of continuous discharge and can be placed in parallel to cater for higher power requirements and greater capacity.

The DCS models come with an integrated DC-DC charger which charges the SP battery from any 12V vehicle system with either traditional or smart alternators.

The positive and negative M8 terminals give a fused and unfused connection on the positive side with an external maxi 100A fuse.

A strong aluminium enclosure delivers a safe, lightweight and powerful unit which is the perfect building block for next generation battery systems.


Baintech Lithium Battery Range for caravan, 4wd, marine

Slimmest 110Ah Lithium Battery on the Market


Measuring 50mm in thickness and weighing in at 11kg, the Slimline Lithium Battery is designed to significantly reduce the installation footprint. This battery can be installed in any orientation, flat under a false floor, in the side wings of rear drawers, or mounted behind dual cab seats. A strong aluminium enclosure delivers a safe, lightweight and powerful unit which offers complete versatility and point of difference for installers.

To increase capacity, the Baintech Lithium batteries can be used in parallel to increase your capacity for longer storage. When placed in parallel using the 50A grey Anderson, these batteries operate together as a single battery, e.g. two 110Ah Slim batteries in parallel provide 220Ah stored capacity.

Baintech Lithium Dual Battery Set Up

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Go off-grid with the new generation Baintech Lithium PowerTop. Equipped with 50Ah of lithium battery cells, you can power your fridge, lights, phone, and everything in between.

Powerful yet lightweight, take your PowerTop camping, mount in your vehicle, or use at home when there’s a black out.



  • 50Ah Lithium Battery
  • 2 X Ciga Sockets
  • 2 X Engel Sockets
  • 2 X Dual USB w C type
  • 3 X Anderson Connectors
  • Voltmeter
  • Fuses

In-built DC-DC Charging (Optional extra)

  • Built-in dual DC-DC Charging
  • 10A via Ciga Plug Connection
  • 20A Via Anderson Plug Connection for vehicle charging

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About Us

Bainbridge Technologies is one of Australia's leading Expert Power Systems Wholesaler...

Bainbridge Technologies brings together more than 30 years of DC and AC power systems expertise and reliable, world class products to support your business objectives with specialised off-grid power storage systems.