Comparing LiPo Brands & Models - 6S Packs (2026)

In this comparison (700g–800g Weight Class: Maintained Voltage Rating / LPB Under Load), seven battery models are evaluated on Lipo Power Band (LPB) voltage stability and degradation over 70 cycles under a continuous 100% load (80mm Schubeler 2250Kv).

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Top Performers

• SMC 6400 HV3: Dominates the category with a dominant initial LPB of 115.4 (142A peak). It holds strong voltage retention across 70 cycles, finishing at 104.6 LPB RMS (9.4% power loss).
• SMC 5200 HP: Strong second-tier output starting at 95.4 LPB (141A peak) and finishing at 87.5 LPB RMS after 70 cycles (8.3% power loss) at a lightweight 740g.
• NEW YERK 5000: Demonstrates remarkable voltage stability over time, starting at 61.7 LPB (135A) and ending at 61.4 LPB RMS with a negligible 0.6% power loss at the lightest weight tested (700g).

Underperformers

• CNHL 6700 LiHV: Experiences catastrophic breakdown after cycle 10, plummeting from an initial 67.5 LPB down to 7.1 LPB RMS at cycle 70 (89.5% power loss).
• BOLT 5400 LiHV: Suffers steady voltage degradation under load, dropping from 55.5 LPB to 43.8 LPB RMS (21.2% power loss) over 70 cycles.
• HRB 5000: Displays low output throughout the test, starting at 40.1 LPB (131A) and settling at 36.2 LPB RMS at cycle 70 (9.7% power loss).

Key Takeaway
The SMC 6400 HV3 delivers far superior voltage under load in the 700g–800g class, while the CNHL 6700 LiHV fails completely under continuous 100% discharge cycling.

In this comparison (700g–800g Weight Class: MAH / Flight Time Capacity Under Load), seven battery models are evaluated on usable capacity retention (mAh) and energy density (Wh/Kg) over 70 cycles under a continuous 100% load (80mm Schubeler 2250Kv).

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Top Performers

• SMC 6400 HV3: Leads the capacity test starting at 6035 mAh and an impressive 175 Wh/Kg energy density. It retains 5443 mAh at cycle 70 (9.8% capacity lost, 16s flight time lost, 158 Wh/Kg final).
• SMC 5200 HP: Highly efficient performance starting at 5378 mAh (161 Wh/Kg) and retaining 5095 mAh at cycle 70 (only 5.3% capacity lost, 8s flight time lost, 152 Wh/Kg final).
• NEW YERK 5000: Shows high capacity stability, starting at 4742 mAh (147 Wh/Kg) and retaining 4661 mAh at cycle 70 (1.7% capacity lost, 2s flight time lost) at a low 700g weight.

Underperformers

• CNHL 6700 LiHV: Shows severe capacity loss starting from cycle 10, dropping from 5356 mAh (163 Wh/Kg) down to 4153 mAh at cycle 70 (22.5% lost, 35s flight time lost).
• BOLT 5400 LiHV: Suffers substantial degradation, dropping from 4541 mAh (142 Wh/Kg) down to 3949 mAh at cycle 70 (13.0% lost, 21s flight time lost).
• HRB 5000: Yields low starting capacity (4187 mAh, 125 Wh/Kg), ending at 3880 mAh at cycle 70 (7.3% lost, 8s flight time lost, 118 Wh/Kg final).

Key Takeaway
The SMC 6400 HV3 and SMC 5200 HP deliver top-tier energy density and flight time capacity in the 700g–800g weight class, whereas the CNHL 6700 LiHV degrades rapidly under load.

In this comparison (805g–900g Weight Class: Maintained Voltage Rating / LPB Under Load), five battery models are evaluated on Lipo Power Band (LPB) voltage stability over 70 cycles under a continuous 100% load (80mm Schubeler 2250Kv).

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Top Performers

• SMC 6300 SRD-V4: Outstanding voltage holder, starting at 114.4 LPB (144A peak) and actually gaining performance to finish at 115.7 LPB RMS (-1.1% power lost) after 70 cycles.
• ADMIRAL 6000: Strong baseline voltage output starting at 102.7 LPB (135A peak) and finishing at 98.5 LPB RMS at cycle 70 (4.1% power loss).
• NEW YERK 6000: Demonstrates anti-degradation characteristics under cycle stress, climbing from an initial 78.9 LPB (136A) to 83.0 LPB RMS at cycle 70 (-5.2% power lost).

Underperformers

• TURNIGY 6200 HD: Suffers severe voltage sag over cycle life, dropping from 89.5 LPB (137A) down to 59.0 LPB RMS at cycle 70 (34.1% power loss).
• HRB 6000: Sits far below the rest of the pack in voltage delivery, starting at 36.3 LPB (132A) and dropping below 30 LPB by cycle 70.

Key Takeaway
In the heavier 805g–900g class, the SMC 6300 SRD-V4 provides unrivaled voltage maintenance under load, while the TURNIGY 6200 HD loses over a third of its voltage power over 70 cycles.

In this comparison (805g–900g Weight Class: MAH / Flight Time Capacity Under Load), five battery models are evaluated on usable capacity retention (mAh) and energy density (Wh/Kg) over 70 cycles under a continuous 100% load (80mm Schubeler 2250Kv).

Caption

Top Performers

• SMC 6300 SRD-V4: Leads the class in usable capacity and energy density, starting at 6040 mAh (154 Wh/Kg) and retaining 5975 mAh at cycle 70 (1.1% capacity lost, 0s flight time lost).
• ADMIRAL 6000: Maintains reliable capacity output from 5949 mAh (146 Wh/Kg) down to 5824 mAh at cycle 70 (2.1% lost, 4s flight time lost), though it is the heaviest pack at 900g.
• NEW YERK 6000: Offers high efficiency relative to weight (815g), starting at 5635 mAh (151 Wh/Kg) and ending at 5505 mAh at cycle 70 (2.3% lost, 3s flight time lost).

Underperformers

• TURNIGY 6200 HD: Shows the worst capacity loss of the heavy class, starting at 5757 mAh (145 Wh/Kg) and degrading to 4645 mAh at cycle 70 (19.3% capacity lost, 28s flight time lost).
• HRB 6000: Delivers low energy density throughout (122 Wh/Kg initial down to 106 Wh/Kg), starting at 4679 mAh and dropping to 4069 mAh at cycle 70 (13.0% capacity lost, 25s flight time lost).

Key Takeaway
The SMC 6300 SRD-V4 delivers class-leading flight time capacity and thermal/cycle resilience, whereas the TURNIGY 6200 HD suffers rapid degradation under high-amp EDF loads.

Lithium Polymer (LiPo) battery performance and longevity under continuous high-amp load are evaluated across weight classes and cycle lifetimes, utilizing the Real C testing framework.

Testing Framework & Methodology

• Real C Standard: Evaluates 6S "~5000 mAh" packs across the 690g–920g weight range under simulated full-throttle, diminishing-power conditions using 80mm Schubeler 2250Kv EDF resistive loads.
• Initial & Real C Criteria: A pack passes testing if average cell voltage stays above 3.50V for 50% of discharge, peak temperature remains under 150°F (65.5°C), maximum cell imbalance stays within 0.100V, and usable capacity under load is at least 66% of label rating. Real C requires passing these metrics after 10 aging cycles at 25C/125A.
• Internal Resistance & SEI Layer: Battery performance relies heavily on maintaining a thin (~0.00004" / 0.001mm) Solid-Electrolyte Interphase (SEI) layer. Overheating (>140°F / 60°C), over-discharging, high voltage (>4.1V), or cold fast-charging thickens the SEI layer, raising internal resistance (IR) and reducing total capacity.

Key Performance Results Across Test Groups

• 700g–800g Weight Class (Voltage & Capacity): The SMC 6400 HV3 leads the category with a 115.4 starting LPB and 6035 mAh capacity (175 Wh/Kg), retaining 104.6 LPB and 5443 mAh after 70 cycles. Conversely, the CNHL 6700 LiHV breaks down rapidly after cycle 10, losing 89.5% of its voltage power and 22.5% capacity by cycle 70.
• 805g–900g Weight Class (Voltage & Capacity): The SMC 6300 SRD-V4 demonstrates exceptional voltage stability, holding 115.7 LPB and retaining 5975 mAh (1.1% capacity loss) after 70 cycles. The TURNIGY 6200 HD suffers severe degradation, dropping 34.1% in voltage power and 19.3% in capacity. The HRB 6000 ranks lowest overall with an initial energy density of only 122 Wh/Kg.

Operational Best Practices & Thermal Management

• Temperature Control: Restrict charging to between 70°F and 86°F (21°C–30°C) and ensure pack temperature is >77°F (25°C) before high-amp discharge (>86°F / 30°C for max C-rates) to avoid permanent electrode plating or cathode cracking. Maintain running temperatures below ~131°F (55°C).
• Storage Safety & Life Extension: Store packs empty at 3.70V–3.75V/cell below 68°F (20°C) in flame-proof LiPo bags to prevent dendrite growth, macro-shorts, and thermal runaway. Charging to 4.10V/cell or limiting Depth of Discharge (DOD) to under 70% doubles overall cycle life.

Key Takeaway
Across all tested weight classes, SMC packs (6400 HV3 and 6300 SRD-V4) deliver class-leading voltage retention and energy density under continuous load, whereas packs like CNHL 6700 LiHV and TURNIGY 6200 HD suffer severe cycle-life degradation under heavy discharge conditions.

Document Review & Analysis

The document provides clear performance data from bench-load discharge testing under high-amp EDF draws. The data effectively isolates voltage sag, energy density (Wh/kg), temperature limits, and continuous load degradation.

However, the dataset presents a clear constraint: no standalone 3000–3999 mAh 6S packs were included in the test runs. The lightest entry tested is the SMC 4400 HCL-HP 80C at 615g.

For the remaining capacity classes, the data contains sufficient sample depth across the 75A, 100A, and 125A load tiers to extract top performers:

• 4000–4500 mAh Class: Evaluated via the SMC 4400 HCL-HP 80C.
• 5000 mAh Class: Highly saturated across multiple brands (SMC, Admiral, CNHL, LiperiAir, Panther, HRB, Spektrum).
• 6000+ mAh Class: Extensively covered in both 700g–800g high-density formats and 805g–1200g heavy-duty formats.

Updated Conclusion Section

Class-by-Class Performance Breakdown

3000–3999 mAh Class

• Status: No Direct Test Data Available.
• Finding: The bench-testing dataset begins at 615g (4400 mAh capacity). Pilots operating 70mm–80mm setups requiring under 600g must extrapolate brand trends from the 4400–5000 mAh tiers.

4000–4500 mAh Class

• Top Performer: SMC 4400 HCL-HP 80C (615g, $48)
• Finding: Punches far above its weight class. In 100A and 125A tests, it maintains higher Lipo Power Band (LPB) ratings (103.43 at 100A / 56.76 at 125A) and lower cell voltage sag than several 5000 mAh packs weighing over 100g more (e.g., Spektrum Smart 5000, Gens Ace 5000, and HRB 5000). It serves as an exceptional high-current alternative when weight is critical.

5000 mAh Class

• Top Performer (High-Output / HV): SMC 5900 HCL-HV2 90C / SMC 5000 HCL-HP 80C
• Top Performer (Standard Voltage / Budget): LiperiAir 5000 60C (705g, $63) & Panther 5000 75C (775g, $68)
• Finding: The 5000 mAh segment shows the widest disparity between true high-C/HV cells and standard lipo chemistry. The SMC 5900/5000 series leads in voltage retention (208.01 LPB at 75A) and flight time under load. For standard-voltage non-HV packs, LiperiAir 5000 and Panther 5000 deliver the best balance of low weight, tight cell matching (QC Bal ≤ 0.017), and high thrust-to-weight efficiency without extreme price markup. Premium brands like Spektrum Smart 5000 ($150) and MaxAmps 5200 ($279) underperform relative to their cost in high-amp discharge environments.

6000+ mAh Class

• Top Performer (Mid-Weight 700g–800g): SMC 6400 HV3 & SMC 7700 HCL-HVC 120C
• Top Performer (Heavy Weight 805g–900g+): SMC 6300 SRD-V4 & SMC 6700 HCL-HV2 90C
• Finding: SMC dominates the 6000+ mAh category across all weight thresholds. The SMC 6300 SRD-V4 demonstrated non-degrading characteristics over 70 continuous 100% duty cycle runs (finishing at 115.7 LPB RMS). For ultra-long flight times where weight budget permits, 7S/6S Li-Ion options (such as the DSD P45B series) yield flight times exceeding 7–8 minutes, though with greater initial voltage sag compared to high-C LiPo/LiHV cells.

Not necessarily in overall quality, but strictly in high-amp, sustained-draw performance per dollar, yes—the data shows them falling behind.

Brands like Spektrum, Gens Ace, and Pulse build reliable, well-manufactured packs with great quality control, solid physical construction, and excellent ecosystem integration (like Spektrum’s Smart technology features). However, when put on a bench load simulating heavy EDF or high-load flight profiles, their performance profile looks very different from SMC's:

• Voltage Sag Under Load: Under 100A–125A continuous draws, Spektrum, Gens Ace, and standard Pulse packs exhibit significantly higher initial voltage sag. This drop directly translates to lower head speed/thrust during peak load, lower Lipo Power Band (LPB) scores, and higher operating temperatures by the end of the discharge cycle.
• The "Smart" & Marketing Premium: Spektrum and Gens Ace (especially their Smart/G-Tech lines) carry substantial price markups for integrated microchips, auto-discharging features, and proprietary balancing connectors. In pure energy density ($text{Wh/kg}) and raw current delivery, that extra cost doesn't translate to higher output — a $150 Spektrum Smart 5000 mAh pack often yields lower under-load voltage retention than a sub-$70 SMC or LiperiAir pack.
• Continuous Load Degradation: Over repeated high-duty cycles, SMC's true high-C/HV chemistry maintains internal resistance (IR) stability longer under extreme thermal stress, whereas standard-rated high-C packs from legacy brands degrade faster when pushed to their labeled limits.

The Nuance:

If the application is medium-current sport flying, scale setups, or if a pilot prioritizes telemetry features, automatic storage discharge, and plug-and-play convenience, brands like Spektrum and Gens Ace are fine choices. But for raw power delivery, minimum voltage drop under 100A+ loads, and thrust-to-weight efficiency, the bench data clearly shows SMC (along with value performers like LiperiAir and Panther) pulling ahead of the legacy premium brands.