PTK5185 2S High Power 30C Micro LiPo Battery (7.4V/240mAh) w/JST Connector

ProTek RC 3S 130C Low IR Si-Graphene HV Shorty LiPo Battery is similar to what the PTK5185 refers to in the ProTek RC lineup, but more specifically the PTK‑5185 itself is a ProTek RC 2S High‑Power 30C Micro LiPo Battery designed for small radio‑controlled models. It’s a lightweight 2‑cell (2S) lithium‑polymer battery that supplies 7.4 V and 240 mAh of capacity with a 30C discharge rating, making it suitable for powering tiny RC aircraft, micro helicopters, and other compact hobby vehicles that require a small, high‑output battery. The pack includes a JST‑style connector, weighs around 18 g, and is built to fit in tight spaces where standard batteries can’t. 

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.