LiFePO4 12V 200Ah Deep Cycle Battery — Built-In BMS for Solar, RV & Marine

200Ah. Built to Last Thousands of Cycles.

A 12V 200Ah LiFePO4 battery is the workhorse of off-grid energy storage — large enough to power a full RV electrical system overnight, reliable enough to last a decade of daily cycling, and light enough to install without a forklift. The built-in BMS handles all protection automatically, so you can wire it into your system and focus on using the power rather than managing the battery.

Features

• 12V 200Ah capacity — 2400Wh of total energy storage; approximately 2280Wh usable at 95% depth of discharge
• LiFePO4 chemistry — 2000–5000+ charge cycles; no thermal runaway risk; superior safety vs. standard lithium-ion
• Built-in BMS — protects against overcharge, over-discharge, over-temperature, short circuit, and cell imbalance automatically
• High continuous discharge rate — supports high current draw for inverters and high-power 12V loads
• Lightweight — significantly lighter than an equivalent 12V 200Ah lead-acid battery
• Low self-discharge — retains charge for months in storage
• Parallel compatible — connect multiple batteries in parallel to increase total capacity
• Series compatible — connect two 12V batteries in series for a 24V system

Who It’s For

• RV and van lifers who need a large 12V battery bank for full-time off-grid living
• Solar system builders who need high-capacity 12V storage
• Boaters who need reliable, lightweight marine battery storage
• Off-grid cabin owners who need a large, long-lasting battery bank

How to Use

1. Connect to a 12V solar charge controller and solar panels for off-grid charging.
2. Connect to a 12V AC charger for wall charging.
3. Connect a 12V inverter to the battery terminals for AC power output.
4. Monitor state of charge via the built-in display or a battery monitor.
5. For parallel connection: connect positive to positive and negative to negative with appropriately rated cables.

Frequently Asked Questions

How does 200Ah LiFePO4 compare to 200Ah lead-acid?
A 200Ah LiFePO4 battery provides approximately 190Ah of usable capacity (95% DoD). A 200Ah lead-acid battery provides only 100Ah usable (50% DoD). LiFePO4 also lasts 5–10x longer — making it significantly more cost-effective over its lifetime despite the higher upfront cost.

Can I use it to replace my existing lead-acid battery?
Yes — 12V LiFePO4 batteries are drop-in replacements for 12V lead-acid batteries in most applications. Ensure your charger has a LiFePO4 charging profile, as lead-acid chargers may not fully charge a LiFePO4 battery and can reduce its lifespan.

What inverter size can I run from it?
Check the battery’s maximum continuous discharge current. Multiply by 12V for maximum inverter wattage. A 100A continuous discharge rate supports a 1200W inverter; 200A supports a 2400W inverter.