Parts/Batteries & charging/LiPo batteries/Helios RC 2S 50C LiPo Battery (7.4V/5200mAh) w/EC3 Connector
Helios RC 2S 50C LiPo Battery (7.4V/5200mAh) w/EC3 Connector
Helios RC

Helios RC 2S 50C LiPo Battery (7.4V/5200mAh) w/EC3 Connector

Part # HEL-2S5200-50-E3
Where to buy
$49.00
AMain Hobbies
Seen Oct 12, 2026
$49.00Buy
Prices are as last seen at the store; stock is not tracked.

About this part

2S Hardcase Battery Pack with Reliable Power

The Helios RC 2S 50C LiPo Battery is engineered for drivers who need dependable, high-output power for demanding vehicles and fast-paced sessions. With a 5200mAh capacity and 7.4V output, it delivers the extended run times and consistent performance required for racing, bashing, and high-drain applications.

The battery's 50C continuous discharge rating supplies steady power, with a 100C burst capability for rapid acceleration and heavy load situations. Its lightweight and durable construction ensures reliability during intense use, while the recommended 2C charge rate supports efficient, safe charging without stressing the cells. Designed for both performance and longevity, it's a strong match for those looking for consistent output and rugged dependability.

Features:

  • 5200mAh capacity for strong run time
  • 50C discharge rate for high-performance output
  • EC3 connector for plug-and-play use
  • Compact and lightweight design
  • Efficient 2C charge rate for quick, safe charging

IMPORTANT LITHIUM POLYMER SAFETY INFORMATION

  • DO NOT leave a battery in your model when charging
  • DO NOT leave lithium batteries unattended when charging
  • ALWAYS balance charge lithium battery
  • ALWAYS use a LiPo Safe charging bag/box
  • YOU MUST use a Li-Poly specific charger to charge lithium batteries (NiMH or NiCD only chargers WILL NOT WORK!)
  • YOU MUST not over discharge lithium battery packs
  • 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 overheated 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 the 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 a battery that has too low a voltage. Do not expose batteries to sunshine or store/charge batteries at temperatures 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 it until it has cooled completely. Wait about 20 mins, then inspect prior to recharging.

Includes:

  • (1) 2S 50C LiPo Battery (7.4V/5200mAh) w/EC3 Connector

Specifications

Nominal Voltage 7.4V (2S)
Capacity 5200mAh
Maximum Charge Rate 2C
Discharge Rates:
Continuous 50C
Peak 100C
Cell Configuration 2S1P
Watt Hours 38.5Wh
ROAR Approved -
Connector EC3
Dimensions (LxWxH) 5.5x1.88x1in (139.8x47.8x25.5mm)
Weight 10.19oz (289g)
CA Residents Prop 65 Warning WARNING: This product can expose you to chemicals including Di(2-ethylhexyl)phthalate (DEHP), which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov Details...

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