ProTek RC 2S “Supreme Power” LiPo 25C Battery (7.4V/850mAh)


Only 2 left in stock

SKU: PTK-5178 Category:


This is the ProTek R/C “Supreme Power” 2S 850mAh, 25C Lithium Polymer battery pack. This pack has a JST connector installed, and comes with a 3-pin Align/E-Flite style balance connector.

This lightweight Li-Poly 25C battery pack is designed to fit radio controlled cars, planes and helicopters that require a 2S 800mAh battery pack, such as the Blade CX. These batteries are a true 25C battery pack, and with a full 25C discharge capacity and light weight, these batteries are a power house for compatible cars, helicopters and airplanes.

This battery is an awesome upgrade for the Blade 200 QX BL. This 850mAh battery is not only 2 grams lighter than the stock 200 QX BL battery, but the 25C discharge rate delivers more current and more capacity, providing increased power and flight time!

Unlike most other Lithium Polymer batteries, these batteries can be charged at up to 2 times the rated current, or 2C! If your charger is capable, you can charge these batteries at 1.6A!


  • Type: Lithium Polymer
  • Capacity: 850 mAh
  • Voltage: 7.4V nominal
  • Connector Type: JST
  • Balancer Type: Align/E-Flite compatible (XH)
  • Number of Cells: 2
  • Weight: 92g
  • Configuration: 2S
  • Dimensions (WxLxH): 28.7 x 77.5 x 11.3mm
  • Maximum Charge Rate: 2C (1.7A)!
  • Maximum Continuous Discharge: 25C (20A)

1) DO NOT leave the battery in your model when charging
2) DO NOT leave unattended when charging
3) ALWAYS balance charge the battery
4) ALWAYS use a LiPo charging bag
5) YOU MUST use a Li-Poly specific charger to charge the pack (NiMH or NiCD only chargers WILL NOT WORK!)
6) YOU MUST not over discharge the Li-Poly battery pack
7) READ & UNDERSTAND the instructions carefully before operating this battery

NOTE: When using high energy Li-Polymer Batteries, please do not over-discharge or over-charge batteries as this will result in over heated batteries. Discharging capacity can’t exceed 80% of the max capacity of the pack after full charging to ensure a good cycle performance. It is recommended to fully charge a brand new battery before using and only discharge the battery 50% for first 5 cycles. Always monitor race time and/or set a low voltage warning on ESC (End voltage cannot be lower than 3.2v per cell) Do not use the battery that has too low a voltage.

Do not expose batteries to sunshine or store/charge batteries at the temperature above 35°C or in a closed car. The high temperature environment could cause damage to the pack or make it burst. If the battery becomes hot while fast charging, high current discharging or racing, do not charge the battery until it has cooled completely. Wait about 20 mins, then inspect prior to recharging.

Additional information


Brand New – Retail Packaging