Four 3.2V 100Ah LiFePO4 cells can be wired in series to create 12V, 24V, 36V, or 48V battery systems, offering flexible energy storage solutions. These lithium iron phosphate cells provide 1280Wh per pack, with 4000+ life cycles and stable performance between -4°F to 140°F. Their modular design supports scalable configurations for solar power, EVs, and marine applications.
Deespaek Batteries for Marine Use
What Makes LiFePO4 Cells Superior to Traditional Battery Chemistries?
LiFePO4 batteries outperform lead-acid and standard lithium-ion cells with 4x longer lifespan, 50% lighter weight, and zero risk of thermal runaway. They maintain 80% capacity after 2000 cycles versus 300-500 cycles in lead-acid alternatives. Unlike NMC batteries, lithium iron phosphate cells contain non-toxic materials and operate safely at 100% depth of discharge without performance degradation.
How to Calculate Voltage/Capacity When Combining Multiple Cells?
Series connections multiply voltage (3.2V × 4 = 12.8V) while maintaining 100Ah capacity. Parallel connections increase capacity (100Ah × 4 = 400Ah) at 3.2V. For 48V systems, arrange 15 cells in series (3.2V × 15 = 48V). Always balance cells within 0.02V difference and use a 100A continuous-rated BMS to prevent voltage spikes exceeding 3.65V per cell during charging.
| Configuration | Voltage | Capacity | Use Case |
|---|---|---|---|
| 4S (Series) | 12.8V | 100Ah | Solar Storage |
| 4P (Parallel) | 3.2V | 400Ah | Low Voltage Applications |
When designing hybrid systems combining series and parallel connections, calculate total energy using (Voltage × Capacity). A 4S2P configuration (8 cells) delivers 12.8V/200Ah = 2560Wh. Always maintain uniform cell orientation and use nickel-plated bus bars to minimize resistance losses exceeding 0.5%.
Deespaek 12V 200Ah LiFePO4 Battery Lifespan
What Safety Features Protect LiFePO4 Battery Configurations?
Built-in safeguards include:
- CID (Current Interrupt Device) triggering at 150°C
- Automatic cell balancing (±10mV precision)
- Over-voltage protection (3.65V cutoff)
- Short-circuit resistance (0.1ms response time)
IP67-rated terminals prevent corrosion, while UL1973-certified fireproof casing withstands 1500°F for 30 minutes. Always install thermal fuses rated for 200A surge currents in high-power applications.
What Maintenance Ensures Maximum Battery Lifespan?
Perform monthly:
- Voltage balancing (3.45V-3.55V storage range)
- Torque checks on 8mm terminal bolts (12-15Nm)
- Insulation resistance tests (>5MΩ)
Every 6 months:
- Capacity testing (80% minimum retention)
- Bus bar oxidation inspection
Implement active balancing during seasonal storage – maintain cells at 40-60% charge in climate-controlled environments. Use dielectric grease on terminals to prevent galvanic corrosion. For packs experiencing >5mV cell divergence, perform manual balancing with a 0.1A trickle charger until voltages stabilize within 0.5% variance.
“These LiFePO4 cells revolutionize energy storage with military-grade durability. We’ve stress-tested them through 5000+ charge cycles at 1C rate with only 8% capacity loss. Their 10ms response time makes them perfect for frequency regulation in microgrids. Just ensure proper cell matching – groups with ≤0.5% internal resistance variance perform best long-term.”
– Renewable Energy Systems Engineer, 12 Years Battery Industry Experience
FAQs
- Can I Mix Old and New Cells?
- Never combine cells with >50 cycle difference. Aging cells increase internal resistance, causing imbalance. Replace entire packs when capacity drops below 70%.
- What Gauge Wire for 100A Discharge?
- Use 4 AWG copper wire with 105°C rating for runs under 10ft. For 48V systems, 6 AWG suffices due to lower current (I = P/V). Always derate 25% for continuous loads.
- How to Ship Lithium Batteries?
- Cells must ship at 30-50% charge (3.2V-3.3V) per IATA Packing Instruction 968. Outer packaging requires UN38.3 certification and Class 9 hazard labels. Ground transport allows up to 30kg per box without special permits.