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Our latest range of 135Ah lithium (LiFePO4) deep-cycle batteries are the most reliable, technologically-advanced batteries we have ever manufactured. With Bluetooth® monitoring, outstanding performance characteristics and full international certification, you’ll never be caught short of 12v power on your 4wding and camping adventures again! Best of all, we’ve packed 135Ah of usable power into a standard Group 27 (N70) size case, meaning they are compatible with standard-sized battery boxes and trays.
These batteries are made using best-in-class robotic manufacturing processes with rigorous quality assurance (including serialised tracking) and pre-shipment cycle testing. We even store the test report for each battery for later reference if needed. That’s why we can now confidently offer you a 5-year Australian warranty.
Our 135AH deep-cycle lithium batteries are constructed from the highest quality 26700 high-discharge cylindrical cells. The cells are carefully matched to ensure the difference in internal resistance is less than 1mΩ and voltage difference is less than 5mV. They are then ultrasonically welded using automated equipment to ensure a strong connection is made between each cell, and encased in custom-molded ABS plastic cell holders to ensure reliability and consistency even when subjected to shock and vibration.
Wait… aren’t prismatic cells better?
Prismatic and cylindrical cells both have inherent advantages and disadvantages. Batteries which use prismatic cells are somewhat lighter than those with cylindrical cells, and are easier to manufacture due to having fewer connections between cells. Cylindrical cells, on the other hand, are usually more efficient in their energy usage, produce somewhat less heat and tend to be more reliable than their prismatic counterparts.
The improved cell reliability and efficiency of cylindrical cells are what made us decide, like Tesla and Rivian, to manufacture these batteries from cylindrical cells.
Our lithium batteries have been certified as meeting all required and optional international standards for performance and safety, including:
When comparing batteries it is vitally important to understand the difference between nominal and C20 capacity. To reduce confusion and help to standardise the measurement of battery capacity, most reputable battery manufacturers will quote the capacity of their battery in amp-hours at C20 (also written as C/20), which means the number of amps the battery can deliver if discharged at a constant rate over a period of 20 hours. Using this standard, a fully-charged battery with a capacity of 100Ah could deliver 5A of current per hour for a period of 20 hours before becoming fully discharged (5A x 20h).
Some disreputable manufacturers, however, will advertise the nominal capacity of their batteries and bury the C20 rating in the fine print. Nominal capacity has no practical application and can be up to 20% higher than the C20 rating, so a battery that is advertised as a 120Ah battery might only be able to deliver 105Ah or even less.
We value our good reputation, and will always quote the C20 rating as the battery’s capacity. This means you can be confident that the power we say our batteries can deliver is not inflated to mislead, create confusion or invite unfair comparisons.
This battery give you the capability to easily monitor its key data wirelessly, via Bluetooth® connection. You can access this feature by downloading the Hardkorr Battery app which is available for iOS® and Android® devices.
The app also records a log of any instances where a BMS protection circuit is activated, including over-charge, over-discharge, under-voltage, over-current and over-temperature. You can find it by pressing the shield icon in the top-right corner of any screen.
Why go Lithium?
The Battery Management System (BMS) inside all lithium batteries contains a protection circuit which trips if the voltage drops below a certain setpoint. In the case of Hardkorr batteries, it is set at 10.0V. This circuit prevents damage to the battery by putting it into a ‘sleep’ mode until it is reset.
In the past, resetting the battery after the over-discharge protection was activated was not easy. Whilst some battery chargers do contain a “wake-up” function, most people had to resort to applying a constant voltage above 12V across the terminals using jumper leads or home-made wires. This was fraught with danger; damage to appliances or the battery were not uncommon.
Our batteries provide an easy solution to this problem; simply connect our included remote reset switch to the socket on the top face of the battery and hold down the button for 5 seconds, and the over-discharge circuit will reset itself. The button can also be flush-mounted into your 12v setup if desired.
| Nominal voltage | 12.8V |
|---|---|
| Capacity (C20) | 135Ah |
| Max series/parallel config | 6S/6P |
| Normal charge voltage | 14.4V ± 0.2V |
| Standard / fast charge current | 27A / 67A |
| Max discharge current (constant) | 135A (1C)* |
| Max discharge current (pulse) | 600A* |
| Discharge cut-off voltage | 10.0V |
| Charge temp | 0°C to 55°C |
| Discharge temp | -20°C to 60°C |
| Storage temp | -5°C to 45°C |
| Ingress protection | IP64 |
| Self-discharge | <3% per month |
| Weight | 14.0kg |
| Dimensions | 305mm x 169mm x 210mm (Group 27) |
| Certifications | UN 38.3, UL 1642, IEC 62133-2:2017, IEC 62619:2017, CE |
* Note on discharge current: if you connect multiple batteries in parallel, the maximum discharge current is multiplied by the number of batteries in the array. For example, if you connect two of these batteries in parallel you can discharge at up to 270A.
As we continue to adapt to the current climate we are also working within limitations regarding shipping times, supplier stock levels, and labour. As such, there may be a delay in the dispatch and delivery of some goods. For anything urgent, please Contact Us to check on stock levels and delivery times.
Returns Policy
Outback Equipment is committed to customer satisfaction. If you are unhappy with any product you receive, simply contact us so we can work with you to resolve the issue as quickly as possible.
Under the Australian Consumer Law there are a number of consumer guarantees that entitle you to return a product and obtain a replacement or refund under certain conditions. In all instances we strongly recommend that you make contact with us before sending any items back.
Incorrect or damaged item sent
If Outback Equipment has sent you a different product from what you have ordered, we are truly sorry and really didn’t mean to, items can also be damaged whilst on their way to you unfortunately, for which we are sorry and want to correct as soon as possible. Please take a few photos of what you have received (any part /item numbers visible would be a great help) and send them to Returns . We will do our best to have the incorrect item returned as soon as possible and the correct item sent out to you. You do need to advise us however within 5 business days from the time of delivery and before the item has been used, unpacked from its manufactures packaging or fitted.
Faulty Product
Under the Australian Consumer Law, you can choose a refund or exchange if an item has a major problem. This is when the item:
Warranties
If a product is defective, please contact Warranties as soon as you are made aware of the problem. A repair, replacement, or refund will be organised and will generally occur after consulting with the manufacturer or supplier.
Any repairs that may need to be carried out will be done so by the manufacturer and not by Outback Equipment. If a repair cannot be made, then Outback Equipment will endeavour to have the item replaced or a refund will be offered.
Note: Goods are only warranted for defects in manufacturing. The standard warranty across most products is 12 months unless otherwise specified by the manufacturer.
Warranty DOES NOT COVER:
Damage resulting from improper use
Damage caused by faulty installation or modification made during installation, Damage caused by mould, insects, animals, misuse, incorrect operation, adverse weather, accidents and fair wear and tear
Costs, losses or charges of removing and reinstalling the product for travel and /or other expenses due to customer’s location for transport charges and damage in transit. It is your responsibility to deliver and pick up your product, including any costs associated with the postage of your repair or replacement product. If you do freight your product, we recommend that you insure against loss or damage
Change-of-mind or incorrect choice
For any purchases where a change-of-mind occurs or an incorrect item has been chosen, you have up to 30 days from time of delivery to return the product (at your own cost) for an exchange. Refunds are not available for a change of mind. Please contact Change of Mind if you are considering returning an item These items must be returned in their original, undamaged condition, in the original packaging prior to an exchange being made for the value of the item, Once the returned item is received , it will be assessed to ensure it is in the original condition and packaging, if the item isn’t in full resalable original condition the returns department will assess, a restocking fee may be applied based upon the assessment.
Change of mind exchanges will be for the amount paid for the product only.
Return shipping
Please contact Outback Equipment before returning any items.
If a product is deemed faulty and is required to be returned, Outback Equipment will provide a Postage Paid label. This only applies to claims made within 60 days from purchase. Any claims made outside this period will be considered a warranty claim and postage will therefore need to be incurred by the customer.
For any change-of-mind or incorrectly chosen purchases that need to be returned, the cost of return postage will be incurred by the customer.
Fitment or Assembly of Goods
For goods that require fitment or assembly our return policy cannot extend beyond the value/cost of the item ordered. This is in large part because the performance of these items is dependent on correct fitment, assembly, and operation. The part must only be fitted by a qualified person. Failure to comply with manufacturer’s specifications may result in property damage, severe injury, or death.
Goods should also be carefully inspected for marks, scratches, or any damage prior to installation. No warranty claims of this nature will be accepted once fitted or modified.
Estimated Delivery Time Frame: 1-23
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