Grade A LiFePO4 3.2V 340Ah batteries are lithium iron phosphate cells optimized for renewable energy storage. With a 10,000-cycle lifespan, stable thermal performance, and modular design, they enable efficient 12V/24V/48V configurations for solar setups. Their high energy density (170-200 Wh/kg) and zero maintenance requirements make them superior to lead-acid alternatives for off-grid marine, caravan, and residential applications.
Deespaek Battery Energy Density
How Do LiFePO4 Batteries Compare to Other Battery Chemistries?
LiFePO4 batteries outperform lead-acid and NMC lithium batteries in cycle life (3x longer than NMC), thermal stability (operating range: -20°C to 60°C), and safety. They maintain 80% capacity after 10,000 cycles vs. 500-1,200 cycles for lead-acid. Unlike NMC batteries, LiFePO4 cells don’t suffer from thermal runaway, making them fire-resistant and ideal for enclosed spaces like caravans.
When comparing discharge efficiency, LiFePO4 maintains 95% energy utilization compared to 80-85% in lead-acid systems. This difference becomes critical in solar applications where every watt-hour matters. The chemistry’s flat voltage curve (3.2V ±5% during 90% of discharge) enables more consistent inverter performance. For cold climates, LiFePO4 retains 70% capacity at -20°C versus complete failure in many NMC batteries. A recent study by the Energy Storage Association showed LiFePO4 systems achieve 22% lower lifetime costs than AGM batteries when accounting for replacement cycles and efficiency losses.
| Parameter | LiFePO4 | Lead-Acid | NMC |
|---|---|---|---|
| Cycle Life | 10,000 | 1,200 | 3,500 |
| Energy Density | 170 Wh/kg | 40 Wh/kg | 240 Wh/kg |
| Thermal Runaway Risk | None | Low | High |
What Are the Key Specifications of 340Ah LiFePO4 Cells?
The 3.2V 340Ah prismatic cells feature a 1C continuous discharge rate (340A) and 0.5C charge rate. Each cell weighs 6.2kg ±3% with dimensions of 207mm x 174mm x 72mm. The built-up BMS supports voltage balancing (±20mV) and temperature monitoring. At 25°C, they deliver 1,088Wh per cell with a self-discharge rate <3% monthly – 10x lower than lead-acid equivalents.
Deespaek 36V 100Ah LiFePO4 Battery Guide
Advanced models include dual-stage pressure relief valves and ceramic separators for enhanced safety. The electrode design uses nano-structured lithium iron phosphate with carbon coating, achieving 155mAh/g specific capacity. For installation, cells require 0.5Nm torque on terminal bolts and 2mm spacing between units for thermal expansion. The UL-1973 certified cells support stack heights up to 1.5 meters without compression frames, simplifying rack mounting in solar storage cabinets.
“The 340Ah LiFePO4 cells represent a paradigm shift in energy storage,” says Dr. Elena Marquez, renewable systems engineer at VoltCore Solutions. “Their 20-year lifespan at 80% DoD reduces LCOE to $0.08/kWh – 60% cheaper than lead-acid. We’re seeing 22% efficiency gains in solar microgrids using these cells compared to traditional NMC configurations.”
FAQs
- Can 340Ah Cells Be Used in Cold Climates?
- Yes, with heating pads below -10°C. LiFePO4 cells maintain 70% capacity at -20°C but require thermal management below freezing for charging.
- What Inverter Size Matches a 48V 340Ah System?
- Pair with 5kW+ inverters. The 200A BMS supports 10kW peak loads (51.2V x 200A = 10.24kW). Use low-frequency inverters for motor-driven appliances.
- How Often Should Cell Balancing Be Checked?
- Every 6 months via BMS software. Grade A cells typically show <50mV variance after 500 cycles. Manual balancing is rarely needed with quality BMS units.