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What Is EVE 3.65V 50.5Ah NMC Pouch Cell?
The EVE 3.65V 50.5Ah NMC pouch cell is a lithium nickel manganese cobalt oxide (LiNiMnCoO₂) battery designed for high-energy-density applications. Operating at a nominal 3.65V with 50.5Ah capacity, it uses a flexible aluminum-laminated pouch design to optimize space efficiency. Typical applications include energy storage systems (ESS), electric vehicles (EVs), and industrial equipment requiring lightweight, high-cycle-life power sources. These cells support 1,500+ charge cycles at 80% depth of discharge (DoD) and feature built-in safety mechanisms like pressure relief vents to mitigate thermal runaway risks.
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How does the voltage affect performance?
The 3.65V nominal voltage balances energy density (≈240Wh/kg) and thermal stability. Higher voltage reduces current draw at equivalent power outputs compared to standard 3.2V LiFePO4 cells. Pro Tip: Pair cells with active balancing BMS to prevent voltage drift during fast charging (>2C).
In EVs, the 3.65V baseline allows 400V+ packs with fewer cells (109 vs. 125 LiFePO4 cells per 400V system), reducing interconnect complexity. For example, a 100S1P configuration achieves 365V nominal—ideal for mid-range commercial EVs. However, thermal management becomes critical above 45°C ambient due to NMC’s lower thermal runway threshold (≈210°C) versus LiFePO4 (≈270°C).
What defines the 50.5Ah capacity?
The 50.5Ah rating indicates discharge capacity at 0.2C (10.1A) down to 2.5V cutoff. Under real-world 1C loads (50.5A), effective capacity drops to ≈48Ah. Cycle life degrades sharply if regularly discharged below 3.0V. Pro Tip: Maintain 20%-80% SoC for daily use to triple calendar lifespan.
| Discharge Rate | Capacity Retention | Cycle Life |
|---|---|---|
| 0.2C | 100% | 1,500 |
| 1C | 95% | 1,200 |
| 2C | 89% | 900 |
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FAQs
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Yes, but only with climate-controlled enclosures—NMC chemistry degrades faster than LiFePO4 above 40°C ambient temperatures.
What charging voltage is safe?
4.2V ±50mV per cell, terminated when current drops to 0.05C. Exceeding 4.25V accelerates electrolyte decomposition, risking gas generation.
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