This is a ProTek R/C 2S, 180mAh, 25C “High Power” Li-Poly Micro Heli/Airplane Battery Pack. This super light weight Li-Poly battery is designed to power small lightweight aircraft, like the E-flite UMX Sbach, UMX Beast 3D and ParkZone UMX F-27Q Stryker 180. This lightweight Li-Poly 25C battery pack is designed to fit radio controlled planes and helicopters that require a 2S 180mAh battery pack. These batteries are a true 25C battery pack, and with a full 25C discharge capacity and light weight, these batteries are a power house for compatible helicopters and airplanes!
Specifications:
- Capacity: 180mAh
- Weight: 13 grams (including wire and connector)
- Li-Po cell arrangement: 2S
- Nominal voltage: 7.4 Volts
- Discharge capability: 25C continuous, 50C max
- Dimension (WxLxH): 21.3x39x11mm w/wires
- Connector: E-flite mini-style connector
- Recommended Application: Small indoor type aircraft
IMPORTANT:
1) DO NOTleave the battery in your model when charging
2) DO NOTleave unattended when charging
3) ALWAYSbalance charge the battery
4) ALWAYS use a LiPo charging bag
5) YOU MUSTuse a Li-Poly specific charger to charge the pack (NiMH or NiCD only chargers WILL NOT WORK!)
6) YOU MUSTnot over discharge the Li-Poly battery pack
7) READ & UNDERSTANDthe 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.
ProTek R/C is an AMain Sports & Hobbies brand
This product was added to our catalog on May 4, 2012
- E-flite UMX Beast 3D
- E-flite UMX HYPER Taxi 3D
Da Beastmaster! Verified Owner Friday, Mar 14 2025 (7 months ago) ProTek RC 2S High Power Micro Heli/Airplane 25C LiPo Battery (7.4V/180mAh) I just flew my O.G. (pre-AS3X) Eflite Beast yesterday on new PROTEK 2s/180mah batteries that I got from Amain Hobbies. It did well flying hard at 50°F weather, came down at 3.85v/cell. $11.99 each, and nice silicone wires leading to the UMX connector. Weighed 3 packs together, divided by 3 =10.7g per 2s pack with wires and UMX connector. Took off in 4 ft from a bench, no problem. Probably pulling 2A at full throttle.
My Accucel 6 80W reads 196 to 215 milliohms range for 6 individual cells- new at 70°F, not bad for small cells. So nice to get that 13 yr old bird flying again! colby hann Verified Owner Friday, Jun 30 2023 (about 2 years ago) ProTek RC 2S High Power Micro Heli/Airplane 25C LiPo Battery (7.4V/180mAh) so this review must have 50 characters WHY ? who knows but this battery works great untill it dont anymore and good luck finding a charger for it you wouldnt believe the money i have spent trying to charge this thing have talked to multiple reputable people trying to get it charged let you know i have been trying for over a month now View all reviews
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