Designed, Developed & Manufactured In-House
We design, develop, and build KickAss lithium batteries in our own factory, 100% owned and operated by us.
KickAss 12V 120Ah Lithium Slimline Deep Cycle Battery LifePO4
Club Price
$
499
95
Pre-Order
Fast Dispatch
30 Day Returns
Slim, Space-Saving Footprint
120Ah Useable Capacity
120A Continuous Charge & Discharge Current
IP65 Dust & Water Protection
High Quality, A-Grade Prismatic LiFePO4 Cells
Pre-order estimated arrival date 16 October 2026
Pre-orders close in . This product will ship within 2 days of the pre-order estimated arrival date.
5 Years (3 Full + 2 Pro Rata) Warranty
This product is covered by a 5 Year (3 Full + 2 Pro Rata) Limited Warranty.
About This Item
Big power, small footprint. This 12V 120Ah lithium battery packs rugged, reliable performance into a slim build that fits where other batteries can't. With 4000+ cycles, smart BMS protection, and an IP65-rated housing, it's ready to keep your fridge, lights, and gear running wherever you roam.
WHY CHOOSE KICKASS?
Built, tested and supported by Australia’s off-grid adventure specialists.
Tested In-House & Proven in the Field
Every KickAss lithium battery is rigorously tested in-house and in real off-grid conditions.
5 Year Warranty
Backed by a 5 year warranty and serviced Australia-wide for total peace of mind.
Built for Safety & Performance
A-grade prismatic cells and an intelligent BMS deliver dependable power with integrated safety protection.
Lifetime Customer Support
Get ongoing support online, in-store, or through our Australia-wide network of 150+ installers.
FEATURES
Slim, Space-Saving Footprint
Not every installation has room to spare. This battery's slim shape means it slots into tight spaces where a standard box battery just won't fit.
120Ah Useable Capacity
Every amp hour is yours to use. Run fridges, lights, and other 12V gear longer between charges.
120A Continuous Charge & Discharge Current
Designed to handle up to 120A of continuous charging and discharging, this battery easily supports high-powered accessories, and when it’s time to top up, recharges efficiently.
Ideal Drop-In Replacement
Upgrade your existing slimline battery without overhauling your setup. The compact slimline design makes it an ideal drop-in replacement, giving you 120Ah of usable lithium capacity and long-lasting LiFePO4 performance.
IP65 Dust & Water Protection
Built for harsh Australian conditions, the IP65-rated housing helps protect against dust and water splashes. It's made to handle life outdoors.
High Quality, A-Grade Prismatic LiFePO4 Cells
Inside is a set of premium prismatic cells, built to an extremely high standard for more consistent performance and a longer life.
Intelligent BMS
The built-in Battery Management System (BMS) continuously monitors the battery to help protect against overheating, overcharging, overdischarging, under and over voltage, and short circuits. It's working in the background every time you use the battery, helping keep it running safely and reliably.
Rated for 4000 cycles at 80% DoD
Charge it, drain it, and do it again. This battery is built to handle 4000 cycles at 80% depth of discharge, so it'll be with you for years.
Low self discharge
The low self-discharge design helps the battery hold its charge while it's not in use. That means it's ready to go sooner when your next adventure rolls around, even after sitting in storage.
Wide operating temperature Range
Built to perform in a wide range of conditions, this battery charges reliably from -10°C to 65°C and discharges from -5°C to 65°C. From frosty mornings to scorching summer days, it's designed to keep powering your adventures.
What’s Included:
- 1 x KickAss 120Ah Lithium Slimline Deep Cycle Battery
- M8 Terminals
SPECIFICATIONS
Technical Details
| Nominal Voltage | 12.8V |
| Capacity | 120Ah |
| Energy | 1536Wh |
| Cell Type | A-Grade Prismatic LiFePO4 (EVE A41) |
| Cell Configuration | 4S1P |
| Internal Resistance | ≤30mΩ |
| Max Continuous Discharge Current | 120A |
| Max Continuous Charge Current | 120A |
| Discharge Cut-off Voltage | 10.0V |
| Charge Temperature Range | -10°C to 65°C |
| Discharge Temperature Range | -20°C to 65°C |
| Storage Temperature Range | -20°C to 45°C |
| IP Rating | IP65 |
| Cycle Life (80% DOD) | 4000 Cycles 80% SOH, 25°C |
| Self-Discharge Rate | <3% per month |
| BMS Protection | Over-charge, Over-discharge, Over-current, Short Circuit, Temperature |
| Short Circuit Protection | >9000A tested, 595ms response |
| Monitoring | None, not without the optional shunt |
| Dimensions (L × W × H) | 392 × 108 × 286mm |
| Weight | 14kg |
| Case Material | ABS Plastic |
| Certifications | IEC 62619, IP65 |
User Manual & Support Docs
| KickAss 12V 120Ah Lithium Slimline Deep Cycle Battery LifePO4 |
Detailed Description
When space is tight but power demands are high, the KickAss 12V 120Ah Lithium Slimline Deep Cycle Battery LiFePO4 is built to deliver. Designed to fit into narrow compartments and tight installations where a standard deep cycle battery simply won’t fit, this battery is ideal for caravans, camper trailers, 4WDs, boats, and off-grid solar setups. It’s also an ideal drop-in replacement if you have an older slimline battery that’s ready for an upgrade.
At its core is a set of high-quality, A-grade prismatic LiFePO4 cells, delivering 120Ah of usable capacity and 120A of continuous charge and discharge current. That means reliable, consistent power for fridges, lighting, inverters, and other 12V accessories, whether you're camping for a weekend or living off-grid for weeks at a time.
Rated for 4000 cycles at 80% depth of discharge, this lithium deep cycle battery is built to outlast traditional AGM and lead-acid batteries many times over, offering better long-term value for caravan, camping, marine, and solar battery setups.
Safety and reliability are built in from the ground up. An intelligent Battery Management System (BMS) continuously monitors the battery, helping protect against overheating, overcharging, overdischarging, short circuits, and voltage irregularities. Combined with an IP65-rated housing for dust and water protection, this battery is built to handle harsh Australian conditions, from dusty outback tracks to salty marine environments.
Low self-discharge means this battery holds its charge well during storage, so it's ready to go when you are, even after weeks sitting idle. A wide operating temperature range – charging from -10°C to 65°C and discharging from -5°C to 65°C – ensures dependable performance across the seasons, whether you're chasing summer swells or exploring in the depths of winter.
Compact, powerful, and built for Australian conditions, the KickAss 12V 120Ah Lithium Slimline Deep Cycle Battery is the ideal upgrade for anyone after a reliable, long-lasting lithium battery that fits where others can't.
