ProTek RC 4S LiPo 20C Battery Pack (14.8V/2100mAh) (Starter Box) w/T-Style Connector - PTK-5186

🏁 ProTek R/C 4S 2100mAh 20C LiPo Battery w/T-Style Connector

Lightweight, Powerful & Perfect for Starter Boxes

The ProTek R/C 4S 2100mAh 20C Lithium Polymer Battery is a compact, high-output 14.8V pack ideal for aircraft, helicopters, and especially 1/8 starter boxes. Featuring a factory-installed T-Style Ultra connector and an Align/E-Flite (XH) balance lead, this pack offers reliable performance in a lightweight form factor.

When used in a nitro starter box, this 4S LiPo dramatically reduces weight — 221g vs. 802g for dual NiMH sticks — cutting nearly 1.3 pounds while delivering increased voltage and torque. This makes starting tight engines easier, faster, and more consistent.

Unlike many LiPo packs, ProTek LiPos can be charged at up to 2C (4.2A), providing faster turnaround times at the track when paired with a compatible charger.

Features:

• Lightweight 4S LiPo — perfect for RC starter boxes
• Delivers stronger punch and higher voltage vs. NiMH
• T-Style Ultra connector (14AWG)
• Align/E-Flite (XH) balance plug
• 2C charge capability (4.2A max)
• Reliable ProTek R/C performance

Specifications:

• Type: Lithium Polymer
• Capacity: 2100mAh
• Voltage: 14.8V (4S)
• Connector: T-Style Ultra (14AWG)
• Balance Lead: XH (Align/E-Flite compatible)
• Configuration: 4S1P
• Dimensions: 37 × 105 × 29mm
• Weight: 221g
• Max Charge Rate: 2C (4.2A)
• Continuous Discharge: 20C (42A)
• Burst Discharge: 40C (84A) for 3s

IMPORTANT LITHIUM POLYMER SAFETY INFORMATION

• DO NOT leave the battery in the model during charging
• NEVER leave charging batteries unattended
• ALWAYS balance charge
• Use a LiPo safe charging bag/box
• Use ONLY a Li-Poly compatible charger
• Do not over-discharge (never below 3.2V/cell)
• Do not store/charge above 35°C or in vehicles
• Allow battery to cool fully before recharging
• For first 5 cycles, discharge only to 50%

Note: Over-charging or over-discharging high-energy LiPo packs may cause permanent damage. Monitor voltage and runtime closely. Avoid exposure to direct sunlight or hot environments.

Includes:

• (1) ProTek R/C 4S 2100mAh 20C LiPo Battery

🔎 Part Number:

PTK-5186