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Dynamite Reaction 7.4v 4000mAh 2S 50C LiPo Battery with EC3 Connector - DYNB3800EC


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Wireless Madness offers a price match promise to help our customers get the best deal possible at all times and all the while retain their custom. We aim to be as competitively priced as possible by scanning our competitiors prices. If you see an identical product elsewhere (other than our own promotions across our sites) including delivery, we will endeavour to match the price! In order to take advantage of this offer you must show us where it is cheaper.

Our price match applies only to UK Internet retailers and stores that have the identical product IN STOCK for immediate same day despatch or collection in store. Prices are compared not just on the product price but it also includes the cost of delivery. Price match critera only applies before an order is placed. Once an order has been placed we cannot price match retrospectively. For more details we request you speak to one our sales team staff on 01772 200 888.

Terms and Conditions: The price promise policy is done in good faith and can be withdrawn at any time without notice. A price match cannot be used in conjunction with other offers running on There maybe the rare case we cannot match a price and as such we are not able to guarantee price matching. The Price Match Promise is subject to change and can be withdrawn at any time and is only available when the above criteria’s are met.

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Dynamite Reaction 7.4v 4000mAh 2S 50C LiPo Battery with EC3 Connector

The new 50C Reaction LiPo Battery packs from Dynamite represent awesome quality and value that provide the power and performance for the everyday RC enthusiast. Whether a serious backyard basher or an entry-level basher, these 50C pack provide the power needed to get the most of any RC vehicle; trucks, cars or boats. Ranging from 2s, 3s and 4S packs all with a 50C discharge rate at capacities from 4000mAh to 5000mAh, reaction have just about any 1/10 or 1/8 scale surface application covered.


  • 50C Discharge rate - Allows the battery to transfer power to the motor at a higher rate giving more power to the vehicle
  • 3C Charge rate - charge these packs faster, safely
  • Prewired with popular, high power EC3 connector
  • Hard casing - New case provides increased durability and reliability over soft case packs in the Dynamite red colour
  • XH balance adapter included - The most common XH balance lead provides the ability to balance packs to increase the lifespan and performance

Cell Type - LiPo
Cell Types - 2S2P
Height - 25mm
Length - 96mm
Width - 47mm
Max Charge Rate - 3C
Max Discharge Rate - 50C
Output Voltage - 7.4V

Please Note: LiPo batteries must be charged with a LiPo-compatible charger.  Never charge batteries unattended.  Only charge Li-Po batteries with chargers specifically designed to charge Li-Po batteries. NEVER use a Ni-MH or Ni-Cd charger.  Li-Po batteries, when not properly used, may burst and catch fire.  It is highly recommended that a safe pouch or fireproof container is used for storage and whilst charging the battery.  By purchasing this Li-Po battery, the buyer assumes all risks associated with its use.

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