Description
Battery Tender 4 Bank 12A On-Board Marine Battery Charger is a purpose-built battery charger/maintainer designed to safely charge and maintain automotive and powersports batteries. It uses an automatic charging profile and transitions to maintenance/float once the battery is full.
Best for
- Best when you want a 10A per bank (40A total) maintainer: small to midsize starting batteries, seasonal storage
- Best for 4-battery setups: multiple vehicles, fleets, or shop benches
Key technical details
- SKU: 022-1004-DL-WH
- UPC: 734357221046
- System voltage: 12V
- Output: 10A per bank (40A total)
- Banks: 4
- Notable features: auto float/maintenance
- Typical use: marine/RV onboard multi-battery charging
Quick technical Q&A
- Will it overcharge my battery if I leave it connected?
- No—once the battery reaches full charge, it switches to a maintenance/float stage to hold storage voltage instead of continuously charging.
- What battery chemistry is it meant for?
- This unit is intended for common lead-acid batteries. Always confirm your battery type and voltage before connecting.
- How do I choose the right amperage?
- Lower amps are ideal for maintenance and small batteries; higher amps are better for faster recovery on larger batteries. If unsure, pick the lowest output that comfortably meets your use case.
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