EcoPower “Electron” 2S Li-Poly 20C Battery Pack (7.4V/850mAh) (EcoPower IRIS)



This is the EcoPower “Electron” 2S 850mAh, 20C Lithium Polymer battery pack for the EcoPower IRIS quadcopter. This battery was developed to provide IRIS users with a high performance upgrade that will keep the machine in the air longer. This battery offers an additional 250mAh capacity for improved flight time compared to the standard 600mAh Li-Ion pack, while the Lithium Polymer chemistry provides a lighter battery capable of delivering higher current. These features will deliver improved overall flight performance.

A factory installed JST connector, combined with a 3-pin Align/E-Flite XH style balance connector allow this battery to be charged using just bout any 2S LiPo balance charger. Additionally, this battery is a great choice for any radio controlled aircraft application that can benefit from a 30.2×54.2x15mm, 2S 850mAh battery pack with a JST connector.

NOTE: This battery can be charged with the stock charger included with the IRIS.


Battery Model Electron 2S – 20C
Weight 45g
Type Lithium Polymer
Capacity 850mAh
Voltage 7.4V nominal
Connector Type
Balance Connector 3 Pin XH type
Number of Cells 2 Cell
Configuration 2S1P
Maximum Charge Rate 1C (.85A)
Maximum Continuous Discharge 20C (17A)
Dimensions (WxLxH)

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.