EcoPower "Trail" 3S Shorty 50C LiPo Battery (11.1V/4200mAh) (w/T-Style Connector)

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EcoPower "Trail" 3S Shorty 50C LiPo Battery (11.1V/4200mAh)
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The EcoPower "Trail" 3S 4200mAh Shorty LiPo battery combines 50C discharge rates and 35x105x24mm dimensions to create a powerful battery with a compact footprint that is perfect for a variety of applications. This pack is a great choice for 1.9 and 2.2 class trucks running brushed and brushless setups, as well as lighter weight 1/10 2WD 3S compatible models that can benefit from the reduced weight and footprint of this shorty size battery. This pack has a T-Style Ultra connector pre-installed, and comes with a 4-pin Align/E-Flite style balance connector.

EcoPower batteries are tested in house, allowing us to provide batteries that deliver accurate specifications and reliable power, at a price that is geared towards our value conscious customers. Plus, if we say it’s in stock, you know we have it. And when you buy it, we will back it up with the outstanding customer service and support that you have come to expect from AMain Sports & Hobbies. So stop beating yourself with cheap batteries, and buy from a trusted source that proves itself time after time with quality products at affordable prices! 

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  • Type: Lithium Polymer
  • Capacity: 4200 mAh
  • Voltage: 11.1V nominal
  • Connector Type: T-Style Ultra (12 GA Wire)
  • Balancer Type: Align/E-Flite compatible (XH)
  • Number of Cells: 3
  • Weight: 220g
  • Configuration: 3S1P
  • Dimensions (WxLxH): 35x105x24mm
  • Maximum Charge Rate: 2C (8.4A)
  • Maximum Continuous Discharge: 50C

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 95°F/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.

EcoPower is an AMain Sports & Hobbies brand

This product was added to our catalog on September 4, 2020

Lotus RC
Verified Owner
Tuesday, Feb 9 2021 (about 3 years ago)
EcoPower "Trail" 3S Shorty 50C LiPo Battery (11.1V/4200mAh)
What a punchy battery! This thing pushes my Redcat Gen 8 from 0 to “good lord” in nothing flat! Life is also excellent! I can crawl for over an hour!
Verified Owner
Wednesday, Sep 22 2021 (about 2 years ago)
EcoPower "Trail" 3S Shorty 50C LiPo Battery (11.1V/4200mAh)
EcoPower "Trail" 3S Shorty 50C LiPo Battery (11.1V/4200mAh) [ECP-5115] Work as expected, no issues using or charging.
Verified Owner
Friday, Dec 10 2021 (about 2 years ago)
EcoPower "Trail" 3S Shorty 50C LiPo Battery (11.1V/4200mAh)
This battery has become my go-to 3s for my crawler for the past 7+ months, great punch and capacity in a shorty pack.
Clifton Hackbarth
Verified Owner
Wednesday, Sep 22 2021 (about 2 years ago)
EcoPower "Trail" 3S Shorty 50C LiPo Battery (11.1V/4200mAh)
I have used this battery two dozen times or so in either my SCX10 II or my Gen8 Axe. It certainly provides enough power when needed, sometimes maybe too much even. I have never ran it down to the low voltage cutoff, I run it for 30-45 minutes and it has never gone below 11.6 Volts so plenty of run time for me.
David Boland
Verified Owner
Tuesday, Oct 10 2023 (7 months ago)
EcoPower "Trail" 3S Shorty 50C LiPo Battery (11.1V/4200mAh)
I bought several of these I think 4 total over the last year, perfect battery for my 1/10th scale crawlers! I had very positive experiences with 3/4 batteries. The last battery I bought always had a bit of a smell to it, much stronger than the others but I didn’t think much of it. Kinda smelled like a marker. That battery didn’t last long at all and I just had to do an emergency recycle on it as it was swelling rapidly and it scared me. Only had a few runs on it. The older ones/other ones of this battery are still working fine and have much more use than the newest one but it just seemed bad from the get go. Might just stick with Zee, they are still going strong and have never swelled on me like that.
Felipe Ruelas
Verified Owner
Tuesday, Jun 27 2023 (11 months ago)
EcoPower "Trail" 3S Shorty 50C LiPo Battery (11.1V/4200mAh)
Excellent battery 3hrs of run time on my Axial scx10 ii, have no issues Charging. Definitely buying another one.
Chad Trone
Verified Owner
Sunday, Jul 17 2022 (about a year ago)
EcoPower "Trail" 3S Shorty 50C LiPo Battery (11.1V/4200mAh)
Great little battery at a great price! I run this in my Basecamp and it will go for ever.
Leo Alcocer
Verified Owner
Sunday, Jun 20 2021 (about 2 years ago)
EcoPower "Trail" 3S Shorty 50C LiPo Battery (11.1V/4200mAh)
Great size for my scx10ii,leaves me extra room on my battery tray.
I easily get 3+ hours on my jeep.

However ive only put bout 40 hours on it and i recently had trouble charging ? Maybe i ran it too low ? Or its too sensitive ?.
Fortunately i was able to recover it.
Aaron Davis
Verified Owner
Tuesday, Feb 8 2022 (about 2 years ago)
EcoPower "Trail" 3S Shorty 50C LiPo Battery (11.1V/4200mAh)
I’ve used the battery one time and I believe a cell went bad. Having trouble charging. Voltage goes down as it charges.