Invicta Lithium 12V 20Ah LiFePO4 Battery - SNL12V20S
Invicta Lithium 12V 20Ah LiFePO4 Battery - SNL12V20S
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Invicta Lithium 12V 20Ah LiFePO4 Battery - SNL12V20S

Regular price $329.00 Sale price$296.10
Tax included. Shipping calculated at checkout.

Invicta LiFePO4 Lithium Batteries:


Invicta is a premium range of batteries developed by SPB, a company with over 25 years experience in energy storage. The Battery consists of high quality Lithium Iron Phosphate (LiFePO₄) prismatic cells that have been encased in aluminium and utilises an integrated BMS, solid busbar connectors and a strengthening frame in order to withstand tough environments.

The Invicta Lithium range comes with all the benefits you expect from using LiFePO₄ while being conveniently designed into 12V, 24V and 36V single battery solutions that are available in standard and slimline case sizes for easy replacement. With up to 8 times the cycle life and less than half the weight of standard SLA technology Invicta is a superior AGM replacement that you can rely on.


Data sheet here

Manual here

Dimensions (LxWxH): 180x76x166mm

Note: S Model, No monitoring built-in. 




7-Year Full Replacement Warranty- Invicta can offer this level of warranty in approved applications because it has undergone extensive independent testing in Australian conditions that resulted in the battery easily exceeding expectations. The testing, the first of its kind in Australia, was completed over 1000 days of continuous operation which resulted in the battery completing over 2000 cycles at 98% DoD while being exposed to significant temperature variations. When combined with Invicta’s IEC certification and SPB’s product support, users can be confident that they will enjoy reliable energy for many years. 


Bluetooth Monitoring- The Bluetooth feature is available on any battery in the Invicta range that ends in BT. It allows the user to conveniently monitor critical information about the battery, which includes charge, discharge, capacity, temperature, voltage and BMS safety features. All via a free application which can be downloaded on any Apple or Android device. This can be useful as conventional testing can be inaccurate and difficult, especially if the battery has been placed in a hard to reach spot, like behind the seat.


Safe- Invicta lithium batteries consist of high-grade Lithium Iron Phosphate (LiFePO4) cells (Aluminium deep cycle prismatic cells) which have been independently safety certified and are systematically quality controlled. As an added benefit, the LiFePO4 cells also have inherent safety features, including high tolerance to heat and abuse and are paired with a specifically engineered and integrated Battery Monitoring System (BMS), all of which are critical to the safe operation of the battery.


Efficient- Purpose-built for deep-cycle and high-cycle applications, Invicta lithium batteries provide more runtime, less downtime and 2000+ genuine cycles. Users can also significantly lower the weight of their vehicle as Invicta is more than 50% lighter than equivalent AGMs. This is especially useful if you need to reduce your GVM or improve your power-to-weight ratio in weight-sensitive applications such as boats or golf carts.


Invicta VS Other Lithium:
- 7-year full replacement warranty
- Aluminium encased prismatic cells
- Integrated BMS with automatic protections
- Wireless monitoring (Bluetooth range only)
- Bolted busbar intercell connectors
- Slimline and standard AGM case sizes
- Strengthening frame to resist damaging vibrations
- 2000+ genuine cycles at 100% DoD
- Over 20 sizes in 12V, 24V and 36V single battery solutions
- IEC certified and independently tested in Australia

Invicta (100Ah) VS AGM (100Ah):
- Safe Lithium Iron Phosphate (LiFePO4) chemistry
- Automatic BMS battery protection (overcharge/discharge, temperature, short circuit and over current)
- Can be installed on either of their sides (not upside down)
- Less than half the weight
- Faster recharge
- More efficient use of capacity
- Can sit unused for up to 12 months
- 2 x more runtime
- Up to 10 years life

Note: Upon purchase you will need to register your 7 year warranty here

SolarBox Australia will process your order within 1-2 business days. For product availability you can call us, use the chat function or email SolarBox directly at: If there is a delay on your order or your item is out of stock you will be emailed immediately to let you know.

Shipping prices are calcuated at checkout depending on weight and where it is being shipped to. View the shipping rules here

What is a warranty? A warranty is a voluntary promise offered by the person or business who sold the product or service to you. Once you buy the product or service, the promise becomes a right that can be enforced under the ACL. Warranties are separate from your automatic consumer guarantees. The consumer guarantees which apply regardless of any warranties suppliers sell or give to you, apply for a reasonable time depending on the nature of the goods or services. This means consumer guarantees may continue to apply after the time period for the warranty has expired.

View the product warranty page here for more information.

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