ULTIMUS by LiFeBlue is the feature rich RV and Marine battery you want. The Ultimate long lasting replacement battery for your dying lead acid batteries. ULTIMUS means beyond the expected and that is what we deliver.
LiFeBlue Battery is Made For LiFe!
There is a lifestyle few will understand. You are there to enjoy the journey.
LiFeBlue Battery will provide the intelligent power that you will need along the way.
Testimony
“We are now in the Marina after spending a week anchored off Catalina Island. The new batteries (8 x 300AH) really make a difference in terms of enjoying quiet time at anchor.
Instead of running a generator basically 24/7 we now run one only 25% of the time.”
Batteries
ULTIMUS by LiFeBlue is our latest version with exceptional features for RV and Marine use. The Ultimate long lasting replacement for those dying lead acid batteries. ULTIMUS means beyond the expected and that is what we deliver.
ULTIMUS Batteries
Standard Models
Discontinued Models
Accessories
Check Here For Accessories Like Chargers, Wired Monitors and More.
Warranty
LiFeBlue Battery Protects your investment with a 10 Year Limited Warranty.
FAQs
Everyone has questions, we have the answers. We love to help. If you need answers not covered here, contact us for fast customer support.
How do I charge LiFeBlue Battery?
LiFeBlue Battery BMS is unique. It is designed to charge with any kind of charger that can provide 14 Volts up to 14.6 Volts. You do not necessarily need a Lithium battery charger. Use a converter, Inverter charger, alternator direct, or PV solar power.
Some converters may charge slowly if designed for lead acid batteries. You can charge using 5 Amps up to the specified maximum. It is important to regularly fully charge above 14.2V so the SoC meter is recalibrated and the cells to remain in balance.
Can I use my alternator to charge the battery?
Yes, alternator charging is very beneficial. Our BMS will begin charging with voltage as low as 13.6 Volts. With proper wire size, no DC converter or special regulator is needed! While driving, you can choose when the alternator is charging. The Alternator and Inverter combination can take the place of a fuel generator saving many hundreds of dollars, extra weight and wasted space. You can request a wiring diagram showing our recommended method to connect your alternator.
Can I use Solar Power to charge LiFeBlue Battery?
Yes, a PV solar power system is a great way to charge. All PV solar controllers work with LiFeBlue Battery. Do not use temperature compensation for charging.
What size and how many batteries should I buy?
All li-ion batteries have current limits imposed by the BMS. You must not exceed the specified current or the battery will turn off in protection mode. By placing batteries in parallel, you increase current capability. You should also consider how mach battery capacity you need to not run out of energy before your next charge period. At any time in the future, you can add additional capacity to your parallel battery bank.
How long will my battery last?
LiFeBlue Battery has been designed for best cycle life possible. It can can easily last for several thousand cycles depending on use and care. Keeping the battery cool will provide the longest life.
Can I use LiFeBlue Battery to start my marine or RV generator or engine?
LiFeBlue Battery is designed for deep cycle use. However, our new ULTIMUS models have a special BMS to allow high current to pass for engine starting.
App
Knowledge Is Power! Every LiFeBlue Battery includes Bluetooth monitoring so you can know your battery. No internet connection required. LiFeBlue and Ultimus Apps for Android and IOS are free.
Download App Here
Wholesale
Dealer Portal is your connection for all LiFeBlue ordering, information, special pricing and more. Check inventory, track shipments and stay up to date with your account.
Resources
Data Sheets, Warranty, Policies, Instructions
Our Resource Library is your one-stop hub for essential information. Explore data sheets, warranty details, policies, and step-by-step instructions—all organized to keep you informed and empowered. Whether you’re troubleshooting or planning ahead, you’ll find the answers here.
LiFeBlue Battery
You have a lifestyle few will understand. It is all about the journey. LiFeBlue Battery is specifically designed for efficient performance in your RV or Marine application. You need trouble free and intelligent energy storage for your unique journey. We’ve got it!