Upgrade Energy Dark Lithium 14.8V 4S 21700 8200mAh 25C Li-Ion Battery - XT60

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Upgrade Energy Dark Lithium series is the new product line designed to dominate the long-range FPV market. With a higher capacity, lower internal resistance, and a lower pack temperature, this battery will provide flight times and punch like no other battery on the market. Through extensive research and lab testing, Upgrade Energy has built the best LiIon pack.

Check out all of our Lithium Ion batteries, cells and chargers as well as the rest of our Upgrade Energy Selection!


  • High quality, long-lasting power designed and made in the USA
  • Utilizes the highest current 21700 Li-Ion cell on the market
  • Higher capacity and lower weight than a similar-sized LiPo
  • Copper tabs throughout differentiate us from the competition
  • Designed through thermal analysis for optimal heat dissipation
  • Optimized power and balance lead lengths for minimal weight and wire tangle


  • Cell Type: Molicel P42A 21700
  • Nominal Voltage: 14.8V
  • Cells: 8 (4S2P / 2x 4S packs in parallel)
  • Capacity: 4100mAh
  • Discharge Rate (Continuous): 25C / 45A
  • Dimensions: 14x4.2x4.2cm
  • Discharge Lead: XT60
  • Balance Lead: JST-XH
  • Weight: 540g


  • 1x Upgrade Energy Dark Lithium 14.8V 4S2P 21700 8200mAh 25C Li-Ion Battery - XT60