The E45-70XN datasheet outlines a 48V 100Ah lithium iron phosphate (LiFePO4) battery designed for industrial applications. It features a 2,000–5,000-cycle lifespan at 80% depth of discharge (DoD), a continuous discharge rate of 1C (100A), and a compact design weighing ~45 kg. Operating temperatures span -20°C to 55°C, with built-in BMS protection against overvoltage, thermal runaway, and cell imbalance. Charging requires ≤58.4V CC-CV chargers.
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What are the key voltage and capacity specs of the E45-70XN?
The E45-70XN operates at a nominal 48V with a 100Ah capacity, delivering 4.8kWh energy. Its voltage range spans 40V (cutoff) to 58.4V (max charge). Pro Tip: Avoid discharging below 44V to prevent BMS-triggered shutdowns. For example, a 48V forklift using this battery can lift 1.5-ton loads for 6 hours before needing a 2-hour recharge.
Beyond basic specs, the E45-70XN supports peak 150A (1.5C) discharges for 30 seconds, ideal for sudden load surges in AGVs. Its energy density (~110 Wh/kg) outperforms lead-acid alternatives by 300%. But what happens if you pair it with incompatible chargers? Overvoltage above 58.4V can degrade anode materials, reducing cycle life by 40%.
How does cycle life compare to other industrial batteries?
The E45-70XN offers 2,000–5,000 cycles at 80% DoD, dwarfing lead-acid’s 500-cycle limit. Nickel-based batteries achieve 1,200 cycles but cost 30% more. Pro Tip: Storing the battery at 30% charge in 25°C environments maximizes longevity. For context, daily use in warehouses would yield 7+ years of service.
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Practically speaking, cycle life hinges on discharge depth. At 100% DoD, cycles drop to 1,500, while 50% DoD extends them to 6,000. Why does temperature matter? Heat accelerates electrolyte decomposition—operating above 55°C halves lifespan. A real-world example: A distribution center using E45-70XN batteries reduced replacement costs by 60% versus their old lead-acid fleet.
| Battery Type | Cycle Life (80% DoD) | Cost per Cycle |
|---|---|---|
| E45-70XN (LiFePO4) | 5,000 | $0.04 |
| Lead-Acid | 500 | $0.18 |
| NiCd | 1,200 | $0.12 |
What thermal performance metrics are critical?
The E45-70XN operates in -20°C to 55°C ranges, with passive cooling and self-heating below 0°C. Charging below 0°C requires preheating to 5°C via BMS-managed pads. For example, cold storage facilities use internal heaters to maintain 10°C battery temps during charging.
Thermal stability stems from LiFePO4’s exothermic tolerance—cells withstand 250°C before thermal runaway, unlike NMC’s 150°C limit. But how does this affect charging speed? At 25°C, it accepts 50A (0.5C) charges, while 45°C reduces charge rates to 30A to prevent plating. Pro Tip: Install temperature sensors on terminals to detect abnormal heat spikes signaling cell imbalance.
What charging parameters must be followed?
Charging requires constant current (50A max) until 58.4V, then constant voltage tapering to 2A. Using 60V+ chargers risks triggering the BMS’s overvoltage lockout. A real-world example: A 48V fleet charged overnight via 50A chargers achieves 100% SOC in 2.5 hours.
Beyond voltage limits, charge efficiency drops below 10°C unless preheating circuits activate. Why is taper current critical? Stopping at 2A minimizes stress on the anode’s carbon layers.
What safety certifications does the E45-70XN hold?
It complies with UL 2580, IEC 62619, and UN 38.3 for shock/vibration/fire resistance. The BMS enforces cell-level voltage/temp monitoring, isolating faults within 100ms. For instance, during a short-circuit test, the BMS cut power in 82ms, preventing thermal escalation.
Certifications mandate rigorous testing—like 1m drop tests and 7-day salt spray exposure. But what about real-world abuse? A case study showed a punctured E45-70XN cell venting gas without flame, meeting UL’s “no fire” criteria. Pro Tip: Audit BMS logs monthly to detect recurring fault codes indicating latent damage.
| Standard | Test | E45-70XN Result |
|---|---|---|
| UL 2580 | Crush Test | No fire/explosion |
| IEC 62619 | Overcharge (125% SOC) | BMS shutdown at 59V |
| UN 38.3 | Altitude Simulation | No leakage/rupture |
How does it compare to the E60-80XN model?
The E60-80XN offers 60V 150Ah (9kWh) for heavier loads but weighs 70kg. While both use LiFePO4, the E60 supports 2C discharges (300A) versus E45’s 1.5C. For example, a high-throughput forklift using the E60 achieves 8-hour runtime vs. the E45’s 6-hour.
However, the E45’s compact size suits confined spaces—its 450mm height fits under low-clearance racks. Why choose voltage over capacity? Higher voltage systems (60V) reduce current by 20%, minimizing heat in cabling. Pro Tip: Upgrade to E60 models only if existing motors support 60V input; else, rewinding costs offset savings.
Redway Battery Expert Insight
FAQs
Yes, but only under professional supervision—series setups require matched BMS units to prevent imbalance. Two 48V E45s in series yield 96V, needing a compatible controller.
What’s the warranty period?
Redway offers 5 years or 5,000 cycles, whichever comes first, covering defects and capacity dips below 80%.
Does it support regenerative braking?
Yes, the BMS accepts up to 30A regen current at 58V max, common in electric forklift deceleration.
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