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Fleet Lithium  |  SKU: BMDC12V200  |  Barcode: 95902995

BlueMax Marine 12V 200Ah LiFePO4 Deep Cycle Battery (Group 27)

Sale price $62900 USD Regular price $69900
Shipping calculated at checkout.
10-Year Warranty US-Based Support Ships From The USA 30-Day Guarantee Safe Chemistry

BlueMax Marine 12V 200Ah LiFePO4 Deep Cycle Battery (Group 27)

High-capacity 12V 200Ah LiFePO4 deep cycle battery from BlueMax Marine. Built for heavy-duty marine, RV, off-grid solar, and trolling motor applications where extended runtime matters most.

Key Specs
  • Chemistry: LiFePO4
  • Voltage: 12V
  • Capacity: 200Ah
  • Form Factor: Group 27
  • Cycle Life: 5,000+ cycles at 80% DoD
  • BMS with overcharge, over-discharge, short circuit, and thermal protection
  • Bluetooth monitoring
FAQ

What is this battery best for? High-demand marine trolling, RV house power, off-grid solar storage, and backup power systems requiring extended runtime.

Is this a drop-in replacement for lead-acid? Yes. Group 27 form factor fits standard battery trays. Requires a LiFePO4-compatible charger.

  • 5 stars: 7 (70%)
  • 4 stars: 2 (20%)
  • 3 stars: 1 (10%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
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Parker A.
Reliable marine power from the BlueMax 200Ah marine battery — BlueMax 200Ah marine battery

The BlueMax 200Ah marine battery has provided steady power for onboard electronics and normal time on the water. It is easier to handle than the older battery and has required very little attention between trips.

Hi Parker, we're thrilled to hear the BlueMax marine battery has been reliable and easy to handle for your boating needs! Thanks for sharing your positive experience.

P
Parker R.
Predictable runtime on the water — BlueMax 200Ah marine battery

The BlueMax 200Ah marine battery makes it easier to plan a day out because the power does not fade as abruptly as the old battery. The battery has also stayed clean and maintenance-free between outings.

Hi Parker, we're thrilled to hear that you're enjoying the reliable performance of our BlueMax Marine battery! Thanks for sharing your experience and for choosing Fleet Lithium. Wishing you many more great days on the water!

J
Jenna K.
Consistent output throughout the day — BlueMax 200Ah marine battery

The BlueMax 200Ah marine battery has maintained stable voltage for the equipment used during typical outings. There is less concern about performance dropping off suddenly late in the day.

C
Caleb B.
Steady power and less battery weight — BlueMax 200Ah marine battery

The BlueMax 200Ah marine battery noticeably reduced the weight carried in the battery area. The boat electronics have operated consistently, and the battery has been easy to recharge.

A
Arthur U.
Solid battery after a longer installation — BlueMax 200Ah marine battery

Fitting the BlueMax 200Ah marine battery into the existing battery space took more measuring than expected. Once secured, it has delivered dependable power and reduced the overall battery weight.

A
Alex C.
Good performance, more setup guidance would help — BlueMax 200Ah marine battery

The BlueMax 200Ah marine battery has met the power needs of the boat, although additional charger and wiring examples would be useful. After installation, operation has been simple and reliable.

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Luis X.
Good marine upgrade with careful planning — BlueMax 200Ah marine battery

The BlueMax 200Ah marine battery worked well after verifying the charger and cable layout for the boat. The initial setup took some care, but the battery has been reliable since installation.

C
Cassandra G.
Strong performance for marine accessories — BlueMax 200Ah marine battery

The BlueMax 200Ah marine battery has handled the usual electronics and accessory loads without noticeable voltage drop. The compact installation and lower maintenance are both significant improvements.

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Thomas E.
A practical replacement for lead-acid — BlueMax 200Ah marine battery

The BlueMax 200Ah marine battery eliminated routine water checks and corrosion cleanup while providing smoother power. The battery compartment is cleaner and easier to inspect now.

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Jacob X.
Easy to manage between trips — BlueMax 200Ah marine battery

The BlueMax 200Ah marine battery charges predictably and does not require the maintenance associated with the old battery. Power has remained steady through normal boating and accessory use.

Pair it right

Make sure this pack matches your motor

Trolling motors pull about one amp per pound of thrust. Enter your motor, hours and throttle to confirm this capacity covers your day on the water.

Size your marine pack

Recommended capacity

Estimate based on ~1A per lb of thrust at 12V and 80% usable depth of discharge. Message us with your rig for an exact recommendation.

100% usable capacity

A 100Ah lead-acid bank gives you 50Ah before it sags. A Fleet Lithium 105Ah pack delivers the full rating, every trip.

Half the weight

Drop 60+ lbs off the transom versus flooded lead-acid and get it back in hull speed and range.

Flat voltage all day

Lithium holds voltage to the end of the charge, so your motor pulls the same thrust on the last hour as the first.

5,000+ cycles, 8-year warranty

Sealed, maintenance-free and IP-rated for the marine environment. No watering, no acid, no off-season top-ups.

Other Fleet Lithium marine batteries

Shop marine lithium batteries
  • 5,000+ cycle life
  • 8-year warranty
  • 300A continuous discharge
  • Sealed & maintenance-free
  • Ships from the USA
Fleet Lithium BlueMax Marine 12V 195Ah LiFePO4 Deep Cycle Battery (Group 27) lined up on a wooden railing with a boat in the background.

Marine Power Without Limits.

Stay on the water longer, run every accessory without worry. BlueMax Marine batteries deliver true dual-purpose power—deep-cycle endurance and reliable engine starting in one lightweight, maintenance-free lithium package built to keep you on the water longer.