Deep-cycle means discharge and recharge every day — EGbatt builds LiFePO4 packs for exactly that, with 80–90% usable DoD and thousands of cycles where lead-acid would quit.

Overview

A deep-cycle battery is rated to be discharged deeply and recharged repeatedly; that is the normal life of solar, mobility and equipment banks. LiFePO4 is the right chemistry because it tolerates 80–90% depth of discharge for 2,000–5,000 cycles, where lead-acid is ruined by anything past 50%. EGbatt builds deep-cycle packs at 12V/24V/48V with an integrated BMS and the enclosure your duty needs. The buying point is simple: size to daily kWh at the high usable DoD, and the bank pays for itself in cycle life.

Key specifications

SpecificationValueWhy it matters DoD80–90% usablevs 50% for lead-acid. Cycle life2,000–5,000 cyclesDaily cycling for years. Voltage12.8 / 25.6 / 51.2VPer application. BMSIntegrated, full protectionDeep-cycle rated. ChemistryLiFePO4Safe, long-cycle.

Typical applications

  • Solar and off-grid: Daily cycling.
  • Mobility: RV, marine, cart.
  • Equipment banks: 24V/48V duty.
  • Backup: Repeated discharge.

How to specify & buying guide

  • Size Ah from daily kWh ÷ voltage at 80–90% DoD, not lead-acid's 50%.
  • Use a charger/controller with an LiFePO4 profile.
  • Match BMS current to peak load (motor starts, inverters).
  • Parallel only identical packs with equal cabling.

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

How deep can I discharge it?

80–90% DoD routinely; lead-acid would be damaged past 50%.

How many cycles?

2,000–5,000 at the defined DoD and temperature.

Is it better than AGM?

Far deeper DoD and 3–5× the life, at higher upfront cost.

What voltage should I pick?

12V small, 24V mid, 48V once loads pass a few kW.

Related products & resources

  • 12V LiFePO4
  • 48V LiFePO4
  • LFP vs Lead-Acid

More in this series

  • Lithium Battery Products
  • LiFePO4 Cells
  • Cylindrical Lithium Cells
  • LiFePO4 Battery Modules
  • LiFePO4 Battery Management Systems (BMS)
  • Sodium-Ion Batteries
  • 12V LiFePO4 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
  • 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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