Home›Parts, accessories & upgrades›Lithium batteries
Lithium boat battery upgrades in Florida
Lighter.
Longer. Stronger.
Swap heavy lead-acid batteries for lithium and get more usable power, faster charging and years more life. We size the bank, the charger and the alternator protection so it’s done right.
½+
Less weight than lead-acid for the same power
~100%
Usable capacity, vs about half for lead-acid
Years
Thousands of cycles instead of hundreds
Fast
Recharges much faster on the right charger
Typical LiFePO4 figures. Exact numbers depend on the battery.
Is lithium worth it on a boat?: Why owners switch.
Lithium (LiFePO4) batteries deliver more usable power for less weight, and they last far longer. They cost more up front, but often less over the life of the boat.
The upgrade is more than the battery: lithium needs a compatible charger, and on engine-charged systems a DC-to-DC charger or regulator to protect your alternator. That part is where a proper install matters.
| Lithium (LiFePO4) | Lead-acid / AGM | |
|---|---|---|
| Weight | Much lighter | Heavy |
| Usable capacity | Nearly all of it | About half before damage |
| Cycle life | Thousands of cycles | Hundreds of cycles |
| Voltage under load | Stays steady | Sags as it drains |
| Up-front cost | Higher | Lower |
Lithium upgrades we install: Where lithium pays off.
Most owners start with the trolling motor bank.
Most installed
Most common
Trolling motor bank
24V or 36V lithium for longer days and less weight at the bow.
Pairs with
Minn Kota, Garmin Force
Includes
Charger, breaker, wiring
House power
House bank
Steady power for electronics, livewells, audio and lights.
Best for
Bigger electronics loads
Includes
DC-DC charging, monitor
Full system
Whole-boat upgrade
Start, house and trolling banks planned together with monitoring.
Best for
New rigs and repowers
Includes
System design, install, test
Every upgrade is quoted before we start.
Lithium battery installation: How we do it.
1
Size the bank
Match capacity and voltage to your motor, electronics and how long you run.
2
Charging
Lithium-compatible onboard charger, plus DC-DC or regulator protection for your alternator.
3
Install
Batteries secured, wired, fused and labeled.
4
Test
Charge, load and monitor checks before handover.
Before we quote
Send us these and we’ll size it right:
Boat year, make and model
Engine make and model
Trolling motor and voltage, if any
Current batteries and charger
What you run: electronics, livewells, audio
Adding a trolling motor? We’ll size the bank for both.
Lithium upgrade process: Quote to power.
1
Quote
Bank, charger and protection sized to your boat.
2
Install
At the store or your dock.
3
Test
Charge and load checks.
4
Walkthrough
How to read the monitor and charge it.
Get a lithium upgrade quote: Ready to lighten up?
Tell us what you run and we’ll size the bank and quote the full install. Looking at other boat upgrades for the same visit? Adding a Seakeeper Ride? Plan the power side with us.
(407) 289-1220
Orlando service desk
Lithium upgrade quote
We reply with a quote, usually within one business day.
Lithium battery questions: Battery answers.
Something else? Ask the team or start a quote above.
Can I just swap my batteries for lithium?
Rarely on its own. Lithium needs a compatible charger and, when the engine charges it, alternator protection. We handle the whole system.
Is lithium safe on a boat?
LiFePO4 chemistry used in marine batteries is stable and has built-in battery management. Installed properly, it’s a proven upgrade.
How much weight will I save?
Often more than half compared with lead-acid for the same usable power. Exact savings depend on the bank.
Do I need to have bought my boat from you?
No. We upgrade any boat.