Hard Korr 135A Battery | Battery Box

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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, full international certification and 135Ah of usable power into a standard Group 27 (N70) size case, you’ll never be caught short of 12v power again!

Latest technology, highest quality.

135A (1C) CONTINUOUS DISCHARGE

6000+ CYCLES @ 80% DOD

CONNECT 6 IN SERIES OR PARALLEL

IP64 WATERPROOF & DUSTPROOF

BLUETOOTH MONITORING VIA PHONE APP

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.

Top-quality cells

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:

• UN 38.3: Safety testing of lithium metal / lithium ion batteries in transport
• UL 1642: Performance/quality testing to guard against risk of fire or explosion
• IEC 62133-2:2017: Safety testing of portable lithium batteries under intended use and reasonably foreseeable misuse (including vibration test)
• IEC 62619:2017: Safety testing of lithium batteries for industrial use
• CE: The batteries meet EU safety, health and environmental protection requirements

In addition, our manufacturing facility has been certified in accordance with the following international standards:

• ISO 9001: Ensures quality management systems have been implemented
• ISO 14001: Ensures environmental management systems have been implemented

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Our heavy duty battery box allows you to turn a regular deep-cycle battery into a convenient portable power station, or create a dual-battery setup using the optional VSR. It is suitable for all deep-cycle batteries up to 324mm (l) x 180mm (w) x 240mm (h) in size.

Our heavy duty battery box allows you to turn a regular deep-cycle battery into a convenient portable power station, or create a simple dual battery setup using the optional 50A Voltage-Sensitive Relay (VSR) and Dual Battery Wiring Kit. It is suitable for a range of battery types including AGM, Lithium, Wet, Gel and Calcium, and can handle batteries up to 324mm (l) x 180mm (w) x 240mm (h) in size.

Constructed of durable ABS plastic and meeting the UL 94V-0 standard for flammability of plastic products, this battery box is a high-quality unit that will last for many years. It contains two 12v outlets with 10A fuses, a dual USB outlet, four 50A Anderson-style outlets that can be used as outputs or inputs, and a 175A Anderson-style outlet which can be used as a jump-starter. Unlike most other models on the market, all Anderson-style ports are recessed into the body to minimise the possibility of damage, and the internal cabling uses heavy-gauge wire and quality connectors.

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More usable power, longer life

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.

The battery can be charged from a range of sources (including solar panels) by simply plugging into one of the 50A Anderson-style ports. The battery’s charge status and voltage can be easily seen via the large digital display.

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Specifications

* 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.

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Specifications

Pack Contents