The 12V LiFePO4 battery is the direct, lighter, longer-lived drop-in for a 12V lead-acid bank — EGbatt builds them with an integrated BMS so your RV, boat or solar setup just works.

Overview

A 12V LiFePO4 battery runs at 12.8V nominal (four cells in series) and replaces a 12V AGM/GEL bank with a quarter of the weight, far deeper usable depth of discharge and 3–5× the cycle life. EGbatt builds 12V packs with an integrated BMS, standard terminals and the capacity your RV, trolling motor, solar or mobility application needs. The catch buyers miss: a LiFePO4 bank wants a lithium-profile charger and a DC-DC or MPPT that supports LFP — we spec that alongside the battery so the system is correct end to end.

Key specifications

SpecificationValueWhy it matters Nominal voltage12.8V (4 cells in series)Drops into 12V systems; use a lithium charger profile. Capacity100Ah typical; 50–300Ah availableDeep usable DoD vs lead-acid. BMSIntegrated, full protectionOver/under-voltage, current, temp. Weight≈1/4 of equivalent lead-acidMajor benefit for mobile use. Cycle life2,000–5,000 cycles3–5× lead-acid.

Typical applications

  • RV and camper: House bank, lighter and deeper.
  • Marine and trolling: 12V cranking and house.
  • Solar and off-grid: Small 12V banks.
  • Mobility and mobility scooters: Drop-in replacement.

How to specify & buying guide

  • Use a charger/DC-DC/MPPT with a LiFePO4 profile — a lead-acid charger will under- or over-charge the bank.
  • Size Ah from daily kWh ÷ 12.8V, and allow for the higher usable DoD (80–90%) vs lead-acid (50%).
  • Keep cable and fuse ratings for the higher LiFePO4 current capability.
  • For cold charging, ask about low-temperature or self-heating variants.

Engineering & manufacturing at EGbatt

Our modules pair matched LiFePO4 cells with a purpose-built BMS, busbars and mechanical enclosure. We design for the thermal and vibration profile of the application — stationary rack, wall mount or mobile pack — and validate the assembly on capacity, IR balance and thermal runaway margin before it ships.

Certifications & compliance

  • UN38.3 — Mandatory lithium battery transport test (altitude, thermal, vibration, shock, external short). Required for any cross-border shipment.
  • IEC62619 — International safety standard for industrial Li-ion cells and batteries; expected by EU and most APAC buyers.
  • CE — EU declaration of conformity for the applicable directives.
  • RoHS — Restriction of hazardous substances in the battery and BMS.
  • IP65 — Dust-tight and low-pressure water-jet resistant — suitable for outdoor enclosures.

Frequently asked questions

Will it replace my lead-acid battery directly?

Electrically yes at 12.8V, but your charger, DC-DC and solar controller should support a LiFePO4 profile.

How long does it last vs lead-acid?

Typically 2,000–5,000 cycles vs 300–500 for lead-acid — 3–5× the life.

Can I use my existing inverter?

Most 12V inverters work; confirm low-voltage cutoff matches LFP (≈10–11V), not lead-acid.

What capacity should I choose?

Daily kWh ÷ 12.8V, sized to 80–90% DoD; we can size it from your load list.

Related products & resources

  • RV Batteries
  • Marine Batteries
  • 24V LiFePO4 Batteries

More in this series

  • Lithium Battery Products
  • LiFePO4 Cells
  • Cylindrical Lithium Cells
  • LiFePO4 Battery Modules
  • LiFePO4 Battery Management Systems (BMS)
  • Sodium-Ion Batteries
  • 24V LiFePO4 Batteries
  • 48V LiFePO4 Batteries
  • Residential Energy Storage Systems
  • Commercial & Industrial Energy Storage
  • Containerised BESS
  • Portable Power Stations
  • RV Lithium Batteries
  • Marine LiFePO4 Batteries
  • Golf Cart Lithium Batteries
  • Deep Cycle LiFePO4 Batteries
  • Trolling Motor Lithium Batteries
  • Forklift Lithium Batteries
  • Self-Heating LiFePO4 Batteries
  • Low Temperature Lithium Batteries
  • Hybrid Inverters
  • Inverter Chargers
  • MPPT Solar Charge Controllers

Request a quote

Send us your voltage, capacity, dimensions, certification target and annual volume. Our engineering team returns a proposal within three working days. Start your RFQ or review our custom pack capabilities.

Request a LiFePO4 quote

Tell us your product, volume and specs — our engineering team returns a proposal within three working days.

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