Marine battery charger built to maintain and revive 12V batteries while installed onboard. Peace of mind for boat owners who need weatherproof, continuous charging and clear diagnostics. Is the FirstPower Pro Marine Battery Charger 2-Bank the right choice for a dependable onboard power system?
⚡ At a Glance
- • Charging Capacity: 10A total, 5A per bank with support for continuous onboard maintenance
- • Best for: Boat owners and marine operators needing dependable 24/7 battery care
- • Not ideal for: Users who require very high-current rapid charging for large battery banks
Two independent 12V banks supply 5A each and support SLA/AGM, LiFePO4 and calcium batteries. IP68 fully-sealed housing allows permanent onboard mounting with automatic repair and diagnostics.
Continuous onboard maintenance - Thanks to 5A per bank and IP68 sealing
Each bank supplies up to 5A, for a combined 10A output, while the IP68 fully-sealed enclosure permits constant onboard connection. An integrated thermal sensor adjusts charge parameters to avoid over-charging in heat and under-charging in cold.
Float charging keeps batteries topped up and reduces sulphation, extending battery life. Sealed construction means chargers can remain connected safely in a wet marine environment.
Versatile battery compatibility - With three dedicated charging modes
Three selectable modes cover 12V SLA/AGM, 12V Lithium (LiFePO4) and 12V Calcium, and each bank can be set independently using the MODE button. Banks operate concurrently for dual-battery systems.
Maintain starting, deep-cycle and LiFePO4 batteries on the same vessel without swapping equipment. Independent bank control simplifies charging arrangements for typical twin-battery setups.
Battery recovery and fault detection - With Force Mode and auto repair
Force Mode allows manual initiation of charging for batteries below 1V by holding MODE for five seconds, while Auto Repair engages when the '12V Repair' indicator lights. Built-in diagnostics flag over-voltage, bad battery, over-temperature and reverse connection conditions.
Recover deeply discharged batteries that might otherwise be discarded and identify faults before they worsen. Clear diagnostic indicators speed up troubleshooting at the berth or in the marina.
✨ The 4 Key Reasons for FirstPower Pro Marine Battery Charger 2-Bank
- Dual Independent Banks - Charge two batteries at once, each mode selectable
- Force Mode Recovery - Revive deeply discharged batteries with a 5s press
- Auto Repair Diagnostics - Detects bad cells, over-temp and reverse connection automatically
- Integrated Thermal Sensor - Adjusts charge rate for hot and cold conditions, preventing damage
📋 Technical Details at a Glance
- Category: Marine Battery Charger
- Banks: 2-Bank (5A per bank)
- Output Current: 10A total, 5A per bank
- Voltage: 12V
- Battery Types: SLA/AGM, 12V Lithium (LiFePO4), 12V Calcium, starter, deep-cycle
❓ Frequently Asked Questions
Q: Can the charger charge two batteries at the same time?
A: Yes, both banks can charge simultaneously and each bank’s charging mode is selected independently via the MODE button.
Q: Does it support LiFePO4 (lithium) batteries?
A: Yes, a 12V LITHIUM mode is provided and explicitly lists LiFePO4 compatibility.
Q: Can it revive a battery with very low voltage?
A: Yes, Force Mode allows manual charging of batteries below 1V by holding the MODE button for five seconds, and Auto Repair can attempt recovery when the 12V Repair indicator is active.
🏆 Our Verdict
Suitable for boat owners, liveaboards and marine technicians who need dependable, weatherproof onboard battery care. The combination of IP68 sealing, independent dual banks and recovery/diagnostic modes is the key selling point. While more feature-rich than a basic charger, long-term value is strong thanks to recovery features and a three-year warranty.
