2S Supreme Power 100C Hard Case Shorty LiPo w/4mm (7.4V/4300mAh) by ProTek RC

ProTek RC
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This is the ProTek R/C "Supreme Power" 2S "Shorty" 4300mAh, 100C Lithium Polymer hard case battery pack. This "Shorty" style battery pack is a great option to reduce weight and tune weight distribution. This battery is designed to be used in 2wd electric off-road cars and trucks, such as the Team Losi Racing 22 family of vehicles, but can also be used with other 1/10 vehicle types. 

These battery packs are built using a hard plastic case that is required for use at ROAR sanctioned tracks and events. The packs are thin enough to fit into all touring cars and off-road vehicles, and are easily secured in vehicles designed for side by side NiMH race packs.

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 8.6A!

Click Here To Download Product Manual


  • ROAR Approved!
  • Type: Lithium Polymer
  • Capacity: 4300mAh
  • Voltage: 7.4V nominal
  • Connector Type: 4.0mm bullets w/2.0mm for balancing
  • Number of Cells: 2
  • Weight: 217g
  • Configuration: 2S2P
  • Dimensions (WxLxH): 46.5x96x25mm
  • Maximum Charge Rate: 2C (8.6A)!
  • Maximum Continuous Discharge: 100C (430A)

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 35C 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.

Click Here For Warranty Information

ProTek R/C is an AMain.com brand

This product was added to our catalog on January 30, 2013.

Verified Owner
Tuesday, Oct 29 2013 (about 3 years ago)
ProTek RC 2S Supreme Power 100C Hard Case Shorty LiPo w/4mm (7.4V/4300mAh)
Battery swelled after several uses in 2wd buggy. Sent it back for warranty, received new battery, swelled again after several uses. Maybe a bad batch? experienced racer,ran batteries for 6 minute races, never over discharged, always charged properly. Have seen and heard of protek batteries having a tendency to swell, so Im done with that brand of lipos.)
Curtis Door
Verified Owner
Monday, Feb 4 2013 (about 4 years ago)
ProTek RC 2S Supreme Power 100C Hard Case Shorty LiPo w/4mm (7.4V/4300mAh)
Awesome batteries. They have tons of power and still last over 15 minutes in my 2WD mod buggy. Make sure you break the battery in by running it for 3-5 minutes, then fully charge it, and run it again for another 3-5 minutes. If you do this a few times, the battery will last longer and perform better.)
Zane Horne
Verified Owner
Sunday, Aug 4 2013 (about 3 years ago)
ProTek RC 2S Supreme Power 100C Hard Case Shorty LiPo w/4mm (7.4V/4300mAh)
used twice..........swelled so bad they barely fit in the car..........junk)
RJ Fisher
Verified Owner
Saturday, Feb 9 2013 (about 4 years ago)
ProTek RC 2S Supreme Power 100C Hard Case Shorty LiPo w/4mm (7.4V/4300mAh)
Have ran some practice laps through the battery and one race day this battery is great I have solid performance all the way through the battery life great power throughout the discharge One practice lap I was running for about 12 minutes and I had no problems On performance Great weight especially for a mid mounted motor set up Definitely will be investing in another one)
Arturo Reese
Monday, Apr 20 2015 (about 2 years ago)
ProTek RC 2S Supreme Power 100C Hard Case Shorty LiPo w/4mm (7.4V/4300mAh)
I have purchase 2 shorty packs and one full size pack. All these packs have swell very bad. I do not recommend protec batteries. I charge all my batteries correctly. These protec batteries are awful.)
Bill Howell
Verified Owner
Thursday, Nov 7 2013 (about 3 years ago)
ProTek RC 2S Supreme Power 100C Hard Case Shorty LiPo w/4mm (7.4V/4300mAh)
I have six of these batteries and haven't had a single problem. I'd recommend them to anybody.)
Verified Owner
Tuesday, Aug 27 2013 (about 3 years ago)
ProTek RC 2S Supreme Power 100C Hard Case Shorty LiPo w/4mm (7.4V/4300mAh)
I Purchased a pair of these last fall and have been running them in my stock 2wd buggy and SCT. Great batteries with lots of punch. Still going strong. I wont hesitate to buy a fresh set this fall again.)