Battery Service, Load Testing & Replacement
Battery banks fail quietly until the day they don't crank. We load test 12V and 24V systems, evaluate charging and DC distribution, and replace banks — lead acid, AGM, gel or lithium — with correct cabling, protection and mounting.
Get an estimate now for this service
Call and describe the fault, or send details and we'll come back with realistic scope, hours and cost.
What's included
Prism Marine Electric provides battery service, load testing & replacement for yachts, superyachts and sportfish vessels in Fort Lauderdale and throughout Broward, Palm Beach and Miami-Dade County — dockside, at anchor or during a yard period. Licensed, insured and available 24/7, with worldwide travel for vessels under our care.
- Battery load testing and capacity verification
- 12V and 24V battery bank replacement
- Lead acid, AGM, gel and lithium bank installation
- Charger, alternator and inverter charging diagnostics
- Starting, house, emergency and thruster bank service
- DC distribution, fusing, shunts and monitoring
- Battery boxes, trays, strapping and ventilation to standard
Our method
Testing beats guessing. We load test each battery, measure voltage drop across cables and terminations under load, and check what the charger is actually delivering — so you replace what's failed rather than the whole locker.
Replacements are installed with correctly sized tinned copper cable, rated overcurrent protection at the bank, secure mounting and ventilation, and monitoring you can read from the panel.
Signs it's time to call
- Slow cranking or a bank that won't hold charge
- Batteries much older than their rated service life
- Voltage sagging when thrusters or windlass run
- Charger or inverter faulting on battery voltage
Battery Service, Load Testing & Replacement across South Florida
We deliver this service to yachts and superyachts throughout the tri-county waterfront, in yards and marinas as well as at private docks — plus worldwide travel for vessels we maintain.
Often needed alongside this work
Power Generation, Protection & Distribution
Shore power, switchgear, breakers and distribution built to survive salt air.
View Power Generation, Protection & Distribution details
Control Systems & Automation
Relay logic, PLC cabinets, HMIs and the interlocks that keep systems talking.
View Control Systems & Automation details
Alarm & Monitoring Systems
Bilge, tank, temperature and machinery alarms you can actually trust.
View Alarm & Monitoring Systems detailsCall now — 24/7 marine electrical response
Fort Lauderdale based, serving Broward, Palm Beach and Miami-Dade. Free estimates, licensed and insured.
Electrical problem on board? Talk to a marine electrician.
Call and describe the fault — you'll speak with a technician who works on yacht electrical systems every day, not a call center.
Licensed & insured · All yards & marinas