8-yr warranty
10+ Year Life Expectancy
6,000+ cycles
App connected
36V 120Ah Lithium Rhino Marine LiFePO4 IP67 Conversion Kit
Available NOW!
The Lithium Rhino Marine series is the ultimate upgrade for serious anglers and boaters. Engineered with advanced LiFePO4 chemistry, these batteries are Rhino Tough, weighing a fraction of traditional lead-acid while delivering 100% usable, relentless power from the first cast to the last. Drop the weight and stay out longer with IP67 Marine Weatherproof durability and a Smart BMS protecting your investment for thousands of cycles.
Free shipping on orders over $1,299. Every kit ships in 24hrs or 2 business days. 30-day money-back satisfaction guarantee no restocking fees. Email support@lithiumrhino.com anytime.
8-year warranty on the cells, BMS, and built-in electronics. Lifetime customer support, call, email, or video chat with a Rhino tech. Register your kit on install day to lock in coverage. See full warranty terms →
8-yr warranty
10+ Year Life Expectancy
6,000+ cycles
App connected
Dominate the Water with Lithium Rhino! Tired of dead batteries cutting your fishing trips short? Say goodbye to lugging around hundreds of pounds of outdated lead-acid batteries. The Lithium Rhino Marine series is engineered for anglers and boaters who demand relentless, uncompromising power.
Advanced tech and unrivaled durability
All day power
Available in 36v65ah, 36v120ah, and 24v100ah to give you everything you need for a full day of fun on the water.
Advanced Functionality
Innovative tech allows for light sleep after 30 minutes and deep sleep after 7 days of light sleep, ensuring you always have the power you need right when you need it.
3 ways to keep track
Full color digital screen directly on the unit, plus round gauge and external power button to turn on/off your Rhino right from the console and our free Rhino app to check paramaters right from your phone.
Subheading
Military-Grade Protection.
Smart Monitoring.
150A Active Battery Management
Continuously monitors and protects every cell. No add-ons, no setup, integrated and automatic from day one.
Mobile App Ready, iOS & Android
Built-in Bluetooth connects to the free Rhino app so you can check battery parameters right from your phone.
- Live SOC, voltage & temperature per cell
- Fault alerts & cycle history
- Free forever, no subscription
Power built to
outlast all.
Engineered from the cell up. Every component is chosen for durability, from Grade-A LiFePO4 cells to the dual-layer ABS casing and 150A smart Rhino BMS.
This isn't just a battery upgrade. It just may be the last one you'll ever need to make.
Have a question ? We are here to help.
Check out the most common questions our customers asked. Still have questions ? Contact our customer support.
Will this kit fit?
Fits most boats, however we recommend measuring before your purchase. Unsure? Contat our team to confirm fit before you order, just chat with us or email support@lithiumrhino.com.
How long does install take?
Most owners finish in 2–4 hours on a Saturday. Step-by-step videos are included for every major cart brand, and a free 30-minute video support call is available if you get stuck.
What about my old lead-acid batteries?
Most local battery shops will recycle them for free, and many will pay scrap value. We can point you to recyclers in your area when you reach out for install support.
How long does shipping take?
Most kits ship within 1 business day from North Carolina and arrive in 2–4 business days. Free shipping on orders over $1,299. You'll get tracking via email once your kit is on the truck.
What if I need to return it?
All products purchased from our website may be returned within 14 days of purchase for a full refund less shipping costs, no questions asked. International return orders may be subject to return shipping fees. To initiate such a return please contact us.
Still have a question?
Our pre-sale team responds in under 4 business hours. Reach out via our contact page or book a free 30-min support call with a Rhino tech.