Supply Chain Alert: Seamless Transition from Molicel P50B to Reliance RS50 with Enhanced Value

Why Consider an Alternative?

Molicel’s INR21700-P50B has faced critical supply disruptions following a production facility fire, extending lead times to 40+ days (with further delays anticipated). To safeguard your production continuity and cost efficiency, we propose Reliance INR21700-RS50 as a technically superior, cost-effective, and readily available alternative.

Performance Comparison: RS50 vs. P50B

ParameterReliance RS50Molicel P50BAdvantage
Capacity4950mAh (min.)4850mAh (min.)+2% higher capacity
Max Continuous Discharge70A (with 80°C cutoff)60A17% higher current
Low-Temp Performance-40°C@5A (85% capacity)-30°C@4.07Ah (to 2.0V)Superior cold tolerance
Cycle Life600 cycles @40A: ≥87.7% retention500 cycles @20A: ≥70%Longer high-rate lifespan
AC Internal Resistance≤4.0mΩ (1kHz)≤8.0mΩ (1kHz)50% lower IR
Fast Charge Support15min to 80% SOC (20A step protocol)1.5h (standard)3x faster charging

Key Highlights:

  • ✅ Ultra-Low Temp Operation: RS50 delivers 40A@-20°C (100% SOC) vs. P50B’s 20A@-20°C.

  • ✅ Safety Compliance: Passes rigorous tests (20A/20V overcharge, 130°C heating, UN38.3 vibration).

  • ✅ Higher Energy Density: 4950mAh vs. 4850mAh at similar dimensions (Ø21.35mm x 70.30mm).

Supply Chain & Cost Advantages

FactorReliance RS50Molicel P50B
Lead TimeStable, ≤15 days40+ days (escalating)
Pricing15-20% lower (volume-based)Premium due to scarcity
Risk MitigationDedicated production lines in ChinaFire-impacted Canadian facility

Cost Savings Example:
For an annual demand of 100K cells:

  • P50B: ~$4.5/cell → $450,000

  • RS50: ~$3.40/cell → $340,000
    → $110,000 annual savings + guaranteed supply.

Why RS50 is a Drop-in Replacement?

  1. Mechanical Compatibility:

    • Identical form factor (21700 cylindrical).

    • Near-identical weight (RS50: ≤67g vs. P50B: ≤70g).

  2. Electrical Compatibility:

    • Same voltage profile (3.6V nominal, 4.2V max charge).

    • Seamless integration with existing PCM/protection circuits.

  3. Application Suitability:

    • Optimized for high-demand use cases:

      • Power tools, drones, EVs, energy storage.

      • Explicitly prohibited for e-cigarettes (aligns with P50B’s restrictions).

Transition Support from Reliance

  • Free Samples & Testing Kits: Validate RS50 in your existing packs.

  • Technical Collaboration: Customized PCM tuning for optimized performance.

  • Inventory Buffering: Priority allocation for urgent orders.


Conclusion: Act Now to Secure Supply

Reliance RS50 offers equal or superior performance at a lower cost, with zero supply chain risk. As Molicel’s recovery timeline remains uncertain, transitioning to RS50 ensures uninterrupted production and enhanced product reliability.

Next Steps:

  1. Request samples/testing data: Contact us

  2. Discuss volume pricing & delivery schedules.

Don’t let supply chain volatility disrupt your business—switch to reliability today.

In order to more easily find the 21700 5000mAh 45A/60A/70A battery, we have summarized the high-rate batteries with a capacity of 5000mAh available on the market and conducted comparative tests on them. If you are interested, you can contact us to obtain the quotations.

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