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Kings vs Voltx Lithium Battery

Kings Vs VoltX Lithium Battery

Published: December 26, 2023 | Updated: March 1, 2025

Lithium Iron Phosphate (LiFePO4) batteries have become a game-changer for off-grid enthusiasts, campers, and 4WD adventurers across Australia. Among the most popular options in 2025 are the Kings 12V 120Ah Lithium LiFePO4 Battery and the VoltX 12V 100Ah LiFePO4 Basic Lithium Battery. Both are affordable, reliable, and widely available, but they cater to slightly different needs. Let’s dive into an updated comparison to help you decide which one suits your setup best.

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Kings 120Ah Lithium LiFePO4 Battery Review

The Kings 12V 120Ah Lithium LiFePO4 Battery, offered by 4WD Supacentre, remains a staple for those seeking a dependable, budget-friendly energy solution in 2025. Here’s what it brings to the table:

Key Features:

  • Capacity: 120Ah – offering a bit more juice than its VoltX counterpart.
  • Chemistry: LiFePO4 with prismatic cells (approx. 3000-cycle rating individually, though pack performance varies).
  • Weight: Approximately 15kg – lightweight compared to AGM alternatives.
  • Cycle Life: Rated for 2000+ cycles at 80% depth of discharge (DoD).
  • Battery Management System (BMS): Integrated BMS with thermal protection, overload management, and high/low voltage cutoff.
  • Connectivity: Supports up to 2 batteries in parallel or 4 in series.
  • Warranty: 12 months – very short but price reflects warranty
  • Price (2025 Estimate): Around AUD $499 (up from $449 in 2023 due to inflation and supply chain adjustments).

Pros:

  • Larger 120Ah capacity means more runtime for power-hungry setups.
  • Widely available through 4WD Supacentre’s extensive retail network, offering easy customer support.
  • Solid BMS ensures safety and reliability for off-grid use.
  • Great value for the price – still one of the cheapest LiFePO4 options per Ah in 2025.

Cons:

  • No Bluetooth or app-based monitoring – a basic battery with no frills.
  • 12-month warranty is shorter than premium brands (though fair for the cost).
  • Some users report variability in long-term performance, possibly due to non-automotive-grade cells.

Best For:

Campers, boaters, or overlanders who need a reliable, no-nonsense battery for off-grid adventures without breaking the bank. In 2025, it’s still a top pick for those prioritizing capacity over advanced features.

Recommendation: We 100% recommend the Kings 120Ah for budget-conscious users who don’t need fancy extras. There are better batteries out there, but few match this price-to-performance ratio.

VoltX 12V 100Ah LiFePO4 Basic Lithium Battery Review

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Key Features:

The VoltX 12V 100Ah LiFePO4 Basic Lithium Battery, sold by Outbax, continues to impress with its simplicity and performance in 2025. Here’s the latest rundown:

  • Capacity: 100Ah – slightly less than the Kings but still ample for most light applications.
  • Chemistry: LiFePO4 with A-grade prismatic cells.
  • Weight: Around 11kg – lighter than the Kings, making it easier to move.
  • Cycle Life: Advertised at 4000 cycles (though real-world testing suggests 2000-3000 cycles at 80% DoD).
  • Battery Management System (BMS): Integrated BMS protects against overheating, overcharging, and short circuits.
  • Connectivity: Officially not recommended for parallel/series connections, though some users report success with parallel setups.
  • Warranty: 36 months – a big step up from Kings.
  • Price (2025 Estimate): Around AUD $429 (up from $399 in 2023, reflecting market trends).

Pros:

  • Lightweight and compact – ideal for portable setups.
  • Longer 36-month warranty offers peace of mind.
  • Positive user feedback for reliability, especially with solar charging.
  • Outperforms AGM batteries in charging speed and weight.

Cons:

  • 100Ah capacity limits its use for larger setups compared to the Kings.
  • No Bluetooth or advanced monitoring – like the Kings, it’s a basic battery.
  • Mixed messaging on parallel/series connections could confuse users.

User Feedback (Updated for 2025):

  • Richard B. (Adelaide, SA): “Still faultless after 18 months. Runs my 40L and 60L fridges for days via solar. Best bang for buck in 2025.”
  • Anonymous (VIC): “Perfect for my off-grid cabin. Charges fast and weighs next to nothing compared to my old AGM.”
  • Tom H. (QLD): “Outlasts my old lead-acid by miles. Two years in, and it’s still going strong.”

Best For:

Light off-grid applications like small fridges, LEDs, or solar-powered setups where portability and warranty matter more than raw capacity.

Head-to-Head Comparison (2025)

FeatureKings 120AhVoltX 100Ah
Capacity120Ah100Ah
Weight~15kg~11kg
Cycle Life2000+ cycles2000-3000 cycles
BMSYes (basic)Yes (basic)
Connectivity2 parallel / 4 seriesNot recommended
Warranty12 months36 months
Price (2025)~AUD $499~AUD $429
Availability4WD Supacentre (online and retail stores)Outbax (online-focused)

Key Differences in 2025:

  • Capacity: Kings wins with 120Ah vs. VoltX’s 100Ah – a 20% edge for bigger loads.
  • Weight: VoltX is lighter by 4kg, a bonus for portability.
  • Warranty: VoltX’s 36 months trumps Kings’ 12 months, appealing to long-term users.
  • Price: Kings is slightly more expensive, but you get more capacity per dollar.
  • Support: Kings’ physical stores offer an edge over VoltX’s online-only model.

Which Should You Choose in 2025?

  • Choose Kings 120Ah if:
    • You need more capacity for larger fridges, inverters, or multi-day trips.
    • You value in-person support and availability at 4WD Supacentre locations.
    • Budget is tight, and you’re okay with a shorter warranty.

  • Choose VoltX 100Ah if:
    • Portability and lighter weight are priorities.
    • You want a longer warranty for peace of mind.
    • Your setup doesn’t demand more than 100Ah (e.g., small solar or camping rigs).

Final Thoughts

In 2025, both the Kings 120Ah and VoltX 100Ah LiFePO4 batteries remain solid choices for budget-conscious Aussies ditching lead-acid batteries. Neither offers Bluetooth or premium features, but they deliver where it counts: reliable power at a fair price. Kings edges out for capacity and retail presence, while VoltX shines with its warranty and portability.

For most casual users, the Kings 120Ah is our top pick unless the VoltX’s lighter weight or longer warranty sways you. Either way, you’re getting a dependable LiFePO4 battery that’ll outlast AGM options every day of the week.

Lithium Battery-school
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Pylontech First Gen 8 years old – Lifepo4 with bad cells – Repaired

Model – Extra 2000 – First generation Pylontech Lifepo4 Battery

Thanks to Nicolas for making this video of his First generation Lifepo4 Battery repair.

Here we see an old Pylontech battery with a capacity of only 10% original capacity, and over the course of 2 youtube videos, Nicolas is able to cut out a couple of bad pouch cells and restore the battery to approx 80% again.
Well done Nicholas


Nicholas Howell Youtube subs – 1.61K subscribers

Part 1

Part 2

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Seplos Battery Australia

Seplos is a battery factory in China, alot like many other Alibaba sellers, they put together batteries. They sell a number of Batteries along with some DIY kits to make your life a little easier. The truth is, that although these KITS are easier, they work out a lot more expensive than if you just purchase the cells and the BMS and case yourself. They use B-grade cells, and you can find that information on some Youtube channels.

Should you want to choose Seplos, reach out to me and I can source anything you require. But my recommendation is to not choose Seplos for your next DIY project, as they are expensive for what you get, should you want to do DIY we can get everything you require for better pricing and we can guarantee the quality of the cells and other aspects of your build. We highly recommend not building anything larger than 48v 100ah banks as they get too heavy to be moved. That’s why every company has settled on such a size of 5kwh.

Some examples of their products are

  1. Seplos mason 206 51.2v 16s 206ah 10.5kwh solar energy storage lifepo4 battery pack
  2. PUSUNG-R 48V 100Ah residential solar power energy home battery storage system
  3. PUSUNG-S Stackable Household Lithium 48v 100ah lifepo4 10KWh
  4. MASON 51.2V 135Ah LiFePO4 Battery

And of course, we can help you to get this product. But even the BMS is cheaper than they are asking from the actual manufacturer, not through Seplos.

Seplos rose to fame because of the BMS, and its support for some Inverters on the DIYSOLARFORUM. However alot of time has now passed and almost all decent BMS can communicate with most inverters

will prowse 12v 100ah review
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Weize 12V 100Ah LiFePO4 Australia

Recently we watched Will Prowse review a OEM battery that we can and have been able to source in small quantities for some time, one of our trusted suppliers sent us one of these Batteries for review last year, this battery is a made-to-specification battery by one of the largest LIFEPO4 drop-in replacement manufacturers in China. You probably have some questions you want to know the answer about China and the Lithium drop-in replacement industry, because its really hard to know who is making and selling what. And its an eye opening journey.

Over the past few years, a few of the OEM Battery suppliers have come up with some reliable and high quality drop-in replacements. This is one of the reasons Will has only recently discovered these better quality OEM batteries. Because they have been a work in progress, as each company gets a little better, so do the batteries they produce.

If you think, it’s actually in the best interest of both the consumer and the manufacturer to make a battery that does work and doesn’t fail. The competitive nature of business drives the improving product all the time.

We have been testing batteries like this since 2015. And they have been available in a similar form since about 2014 from these manufacturers.

What has happened is that the product has matured, they have got to the point where the BMS is very reliable, and the cells are better than what most people need.


To find out why we won’t be importing this Weize 12V 100Ah LiFePO4 Battery in bulk read along further

Questions

Q. Can we get this in 50ah, 100ah, and 200ah capacity from the same manufacturer?
A. Yes, we can

Q. Will we be ordering these into stock?
A. No, we won’t, because there are too many brands of 12v 100ah drop-in, already on the market, and we would prefer to only bring in products we love and recommend for our customers.

Q. How much would we charge for this?
A. Not as much as you might think, being Amazon is very competitive, the price of this is $350-450USD.

Lets do some quick math. based on the 2 prices $350USD and $450USD.

$350 = $470 AUD
$470 + 10% GST = $517
$517 + 5% DUTY = $542.85
$542.85 + Shipping $60±
$600± AUD

$450 = $603 AUD
$603 + 10% GST = $663.30
$663.30 + 5% DUTY = $696.50
$696.50 + Shipping $60±
$766.50± AUD

As you can see, there is no real business case for importing these into Australia. In fact they are already here, just labelled with a different brand. I know these are here in the $600-1000 range already.

It does make you wonder, should you buy a $400 eBay battery or should you buy a $2000 Enerdrive? In my view, I would buy somewhere in the middle, but I also build my own batteries which I prefer, as I can choose which cells I use, and which BMS I use, and that is exactly why we at Lifepo4 Australia choose to use the EVE and Ganfeng lithium cells primarily, because they are both A grade products, and they both use Australian Lithium inside them.

I don’t know about you but if Victron would just release a 100ah battery for $600-800, they would destroy every other battery retailer in one go. As long as it had 4 Series and 4 parallel, with an easy to use management software for when it’s used in various configurations. Victron would absolutely own the market.

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