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Posted by cmec | Jan 24, 2019 @ 08:08 AM | 1,964 Views
CMIUTA Electric Company designing and manufacturing custom battery packs.Learn more >>>

Suitable for high-efficiency/high-torque/low kV engines.
Configurations tailored on-demand to meet specific requests.
An excellent energy-to-weight and size ratio, in their class.
Compact design and rugged.
Gold-plated discharge connectors & EMI shielded cables.
Embedded and effective heat-dissipation conductive layers.

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Panasonic NCR18650GA. Has the specific energy of more than 250 Wh/kg and energy density of about 700Wh/L. The cell specs help us to build highly most efficient and extremely balanced battery packs.

Panasonic NCR20700B. It is so far the most cost-effective cell created by the Japanese, offering an average of 30% more performance as opposed to its NCR18650GA counterpart while sacrificing just under a 10% increase in size (NCR20700B has 20,3mm in diameter and 70,3mm long). The internal resistance of this cell is less than 20mΩ.

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Posted by cmec | Aug 08, 2018 @ 06:00 AM | 1,584 Views
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Description: 6S6P 60A NCR18650GA UAV battery

Technical specs and performances
  • Cell count: 36 (same rank cells)
  • Cell type: Panasonic NCR18650GA Made in Japan
  • Electrochemistry: Lithium-ion NCA (LiNiCoAlO2)
  • Series-Parallel-Connected Cells: 6S6P
  • Battery pack internal resistance (IR): less than 35mΩ
  • Current capacity: 21Ah (21000 mAh)
  • Voltage (nominal) 22.2V
  • Energy capacity: 466Wh
  • Power: 1332W
  • Maximum continuous discharge current: 60A
  • Maximum pulse discharge current (10sec): 80A
  • Maximum allowable charge voltage: 25.2V
  • The discharge end voltage should be more than 16.2V (18.6V for long lifespan)
  • Charging current (CC): max. 10A
  • Weight: +/- 1800g (including wiring harnesses, connectors & covering)
  • Physical dimensions (distance between cell pack edges, excluding harnesses): 190 x 70 x 72 mm.
  • Wiring harnesses and connectors
  • Discharge wire type: Multi-strand 12AWG flexible silicone insulated copper
  • Gold plated discharge connector: standard XT90s (or XT60/EC5/other)
  • Discharge wire length (pack to connector end) +/- 100mm
  • Balance Plug: JST-XH 7-pin
  • Balance wire length (pack to connector end): +/- 70mm
  • Thermal management
  • Innovative Passive Built-in Battery Cooling System.
  • Shielded and Cooled Discharge Cable.
  • Optional

  • LM35 Temperature Sensor, with a standard 3-pin connector.
  • 10k NTC thermistor/sensor TDK Electronics.
  • 6W Integrated Battery Heating System (IBHS), for sub-zero applications. Requires an external 6V power source from PDB/BEC of the aircraft.
  • Safety

The upper part of the cell is over-insulated with a ring-shaped dielectric material.
The entire cell block is surrounded by a multi-layers shield with mechanical strength and dielectric insulated, outside-reinforced with an aluminized film used in the spacecraft industry. All covering materials provide a high sealing, improve thermal performance and contribute to the robustness of the battery pack.
The battery pack is externally wrapped in a hard (Black & Blue) PVC film.

More info: