PTK5186 4S LiPo 20C Battery Pack (14.8V/2100mAh) w/T-Style Connector

The ProTek 4S LiPo 20C Battery Pack 14.8V 2100mAh Starter Box (model PTK‑5186) is a high‑performance 4‑cell (4S) Lithium‑Polymer (LiPo) rechargeable battery pack designed for use with RC starter boxes and compatible RC applications. It delivers 14.8 V and 2100 mAh capacity with a 20C discharge rating, providing strong and consistent power to help start engines or power devices efficiently. The pack comes with T‑Style Ultra connectors and a balance lead for easy connection and charging, and its lightweight design makes it a popular upgrade over heavier NiMH starter batteries. Whether you’re powering a starter box or other RC gear, this LiPo battery offers reliable voltage and punch for demanding use. 

Specifications:

• Type: Lithium Polymer
• Capacity: 2100 mAh
• Voltage: 14.8V nominal
• Connector Type: T-Style Ultra (14 GA Wire)
• Balancer Type: Align/E-Flite compatible (XH)
• Number of Cells: 4
• Weight: 221g
• Configuration: 4S1P
• Dimensions (WxLxH): 37 x 105 x 29mm
• Maximum Charge Rate: 2C (4.2A)!
• Maximum Continuous Discharge: 20C (42A)
• Maximum Burst Discharge: 40C (84A) for 3 seconds

IMPORTANT:
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

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.