Parts/Batteries & charging/LiPo batteries/ProTek RC LiPo Receiver Battery Pack (Mugen/AE/8ight-X) (7.4V/2300mAh) (w/Balance Plug)
ProTek RC LiPo Receiver Battery Pack (Mugen/AE/8ight-X) (7.4V/2300mAh) (w/Balance Plug)
ProTek RC

ProTek RC LiPo Receiver Battery Pack (Mugen/AE/8ight-X) (7.4V/2300mAh) (w/Balance Plug)

Part # PTK-51963.8(48)
Where to buy
$41.99
AMain Hobbies
Seen Oct 12, 2026
$41.99Buy
Prices are as last seen at the store; stock is not tracked.

About this part

This is a Li-Poly 2300mAh receiver battery pack from ProTek R/C, made with super thick 20awg silicone wire! This super light weight Li-Poly battery is designed to power the electronics of 1/10th & 1/8th scale nitro powered race cars. There are many advantages to using a Li-Poly receiver battery, but the biggest advantage is that the battery voltage to your receiver and servos will remain constant throughout the race with the use of a voltage regulator (required). A constant voltage level to your servos will ensure consistent performance at the start and end of your race compared to typical NiMH receiver battery packs. Additionally, the overall weight of your race car will be significantly reduced over the use of typical NiMh receiver packs.

These packs are built with a lexan plastic shell around the outside of the battery, and then covered in blue heat shrink. The lexan shell is designed to protect the battery cells while in the vehicle, for longer life. Note that due to the lexan shell, sometimes the battery may feel soft to the touch on the outside of the battery; this is normal as there is a small air gap between the lexan shell and the battery cells inside.

Perfect battery for the Airtronics M11X/M12 radio!
This battery is also the perfect transmitter battery for the Airtronics M11X and M12 transmitters, which require a 2S Li-Poly battery for operation.

Runtime:
Don’t be thrown off by the capacity rating of Li-Poly battery packs, as you will get awesome runtime out this pack! Unlike NiMH battery packs, Li-Poly battery packs do not lose voltage as quickly over time and can handle higher current draw than typical NiMH battery packs. Given that Li-Poly battery packs provide a higher nominal voltage (7.4V nominal), the actual capacity of the battery pack when compared to a typical NiMH battery pack (6.0V nominal) is about 30% more than the rated value (so this pack would be about the same as a 3000mAh NiMH pack in total capacity). Also with the use of a voltage regulator, Li-Poly battery packs will produce the same voltage to your receiver and servos at the end of the pack as it does at the start. This means the useable capacity of the battery pack is significantly more than typical NiMH battery packs, because most NiMH battery packs will produce significantly less than the 6.0V nominal voltage once they get below half capacity (ie: your servos will be a lot more sluggish if your typical NiMH battery pack is below half capacity).

View Manual Icon small Warranty Info Icon small

Specifications:

  • Capacity: 2300 mAh
  • Weight: 87 grams (including wire and connector)
  • Li-Po cell arrangement: 2S1P
  • Nominal voltage: 7.4 Volts
  • Discharge capability: 8C continuous (18.4A), 16C max (36.8A)
  • Dimension(mm): 85 x 30 x 17mm
  • Connector: JR Style with thick 20AWG Silicone Wire
  • Balancer Plug: ProTek R/C XH style (Align, E-Flite compatible)
  • Recommended Application: 1/10th & 1/8th scale vehicles that normally use a flat stick pack receiver battery, 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.

CA Residents Prop 65 Warning WARNING: This product can expose you to chemicals including Di(2-ethylhexyl)phthalate (DEHP), which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov Details...

Reviews3.8 · 48 reviews

DAVID BAUMASTERVerified owneron ProTek RC LiPo Receiver Battery Pack (Mugen/AE/8ight-X) (7.4V/2300mAh)

I have a mbx6t and I love the way the battery fits in the car but the durability of this battery is lousey. I have 2 of these and neither is worth having.After 3 or 4 charges the batterys (both of them swelled up) neither pack would balance,as far as I am concerned that was 80.00 wasted.

8 found this helpful
AnonymousVerified owneron ProTek RC LiPo Receiver Battery Pack (Mugen/AE/8ight-X) (7.4V/2300mAh)

Fits the MBX6 perfectly, well super snug, but MAJOR issue is that you have to watch these packs as they swell. Only charge at 1.0amp and not the standard 2.3amps. These are touchy about being overcharged, discharged, and heat. I think ProTek 'Amain' needs to redesign these or have the company who makes these put better LIPO cells in these RX packs. I like all other ProTek items but these are way down on the list of the normal quality you would expect from ProTek, so I would suggest to look elsewhere for the LIPO RX flat packs.

3 found this helpful
Markon ProTek RC LiPo Receiver Battery Pack (Mugen/AE/8ight-X) (7.4V/2300mAh)

Daniel, you joking right? It is a LIPO and requires a lipo charger. There are plenty to pick from. I like the hyperion line of chargers.

1 found this helpful
NITROMANVerified owneron ProTek RC LiPo Receiver Battery Pack (Mugen/AE/8ight-X) (7.4V/2300mAh)

It's gonna be a pain to pull this back out. Installed it a few weeks ago and tried charging it today. Only one cell registers, the other is dead. Pulled out another 2s rx pack and it was fine. Should of paid attention to the 1 star reviews, they apparently are warranted. Update:Jun at Amain took care of the issue, quickly and easily. HE even went out to personally check the replacement being sent.

1 found this helpful
Brett BowenVerified owneron ProTek RC LiPo Receiver Battery Pack (Mugen/AE/8ight-X) (7.4V/2300mAh)

Pack works as it's supposed to. Lasts all day in my mbx6 w/ two high voltage savox servos (sc-1267). Using a Airtronics 92744 reciever, no regulator, no nothing. Great battery, would buy again.

1 found this helpful
What reviewers say

Reviews are sharply split. Many owners report long run times, a snug fit in Mugen, Xray, Revo and similar chassis, and years of service when charged carefully and balanced. A recurring complaint, repeated across many reviews, is cells swelling or puffing after a few charges or races, with some reporting dead or unbalanced cells and wiring or fit problems. Several reviewers say the manufacturer's support replaced defective packs, while others report long waits or unhelpful responses. Reviewers agree that a LiPo-safe charger, balancing and a moderate charge rate matter, and some say the packs are sensitive to overcharging, heat and discharge. Several reviews are off-topic or about charging advice rather than the pack itself.

  • + Long run times
  • + Snug fit in many Mugen and Xray chassis
  • + Durable with years of use when balanced and charged properly
  • + Responsive replacement under warranty for some buyers
  • − Cells swell or puff up after a few charges or races
  • − Dead or unbalanced cells out of the box or soon after
  • − Wires can break or get pinched in tight fits
  • − Support delays and slow replacements for some buyers
Summary generated from the reviews above.

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