PTK5161 LiPo Hump/Short Receiver Battery Pack (7.4V/2600mAh)

The ProTek RC PTK‑5161 LiPo Receiver Battery Pack is a rechargeable 7.4 V 2600 mAh Li‑Polymer (LiPo) receiver battery hump pack designed for use in 1/10th and 1/8th scale gas‑powered RC cars and other hobby vehicles. It supplies steady voltage to your receiver and servos, helping maintain consistent performance during races or long running sessions, and is built with thick silicone wiring and a durable shell for protection in rugged use. The hump pack form factor fits directly into compatible battery boxes like Kyosho and Tekno models, reducing weight compared with older NiMH packs and giving better usable capacity. This pack includes a balancer plug for safe charging and requires a LiPo‑specific charger and a voltage regulator to ensure proper operation and longevity. 

Specifications:

• Capacity: 2600mAh
• Case: Lexan shell covered with heat shrink
• Weight: 100 grams (including wire and connector)
• Li-Po cell arrangement: 2S2P
• Nominal voltage: 7.4 Volts
• Dimension (LxWxH): 54x31x31mm
• Connector: JR Style with thick 20AWG Silicone Wire
• Balancer Plug: XH style (Align, E-Flite compatible)
• Recommended Application: 1/10th & 1/8th scale vehicles, Helicopters and Airplanes 

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

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 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.