ProTek RC 3S 120C Low IR Si-Graphene + HV Shorty LiPo Battery (11.4V/4500mAh) Crawler Pack w/T-Style Plug

ProTek RC 3S 120C Low IR Si-Graphene + HV Shorty LiPo Battery (11.4V/4500mAh)
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The ProTek R/C 3S 120C Low IR Silicon Graphene + HV Shorty LiPo Battery was developed specifically for 1/10 scale rock crawler and rock racer applications. 3S packs that are commonly used in the crawler world are either small, low capacity packs - or large, heavy 4000-5000mAh packs. This 4500mAh battery fills the void and gives scalers a high capacity option that produces more voltage and longer runtimes than a 2200mAh, yet only weighs approximately 20 grams more! Plus, when charged at LiHV specs this battery produces 13.05V, instead of the standard 12.6V of a fully charged standard LiPo, meaning performance oriented enthusiasts can take advantage of the light weight, and higher voltage throughout the discharge curve to give them a more consistent power delivery with less fade on the track!

Want more reasons to run this pack? When compared to standard LiPo and LiHV, Silicon Graphene cells deliver improved efficiency, lower operating temperatures, lower internal resistance, better run time, increased cycle life and increased voltage - but Graphene + 120C LiPo batteries take that a step further with lower internal resistance, more power, and 400mAh more capacity when compared to the previous ProTek 3S LiHV! 

Lab testing has shown that ProTek R/C Silicon Graphene packs have double the cycle life when charged at 1C rates, and can be charged at higher amp rates, with less risk of damage to the pack. More importantly, the discharge curve is flatter, meaning the cells maintain higher voltage throughout the discharge cycle with no significant drop off. Additionally, when compared to conventional LiPo batteries Silicon Graphene batteries are lighter, providing a higher capacity per gram ratio. With 7.6V nominal voltage, 120C discharge ratings, incredibly high charge rates and ten different models to choose from, ProTek R/C 120C Graphene + packs are perfect for enthusiasts that demand the absolute best. 


  • Comparable weight to a 2200mAh pack, 100g lighter than EcoPower 4100mAh
  • 15 grams heavier than the original LiHV 3600 3S battery, and 900mAh more capacity
  • Great choice for scalers and U4 racers
  • Great choice for pro class 3S drag racing, boats and airplanes too
  • Improved power to weight ratio and a lower overall CG
  • Silicone Graphene can handle more abuse and deliver more current than a standard LiPo battery
  • Improved efficiency, lower operating temperatures, and lower internal resistance!
  • Increased run time, increased cycle life and increased voltage!
  • More capacity gram for gram when compared to standard LiPo cells
  • 10C max charge rates - 1C charge rate recommended for longest life
  • 11.4V nominal voltage
NOTE: While these batteries are technically LiHV cells, they can still be charged with a standard LiPo charger. The overall voltage and capacity will be slightly less than if charged to LiHV specs, but the performance will be better than a standard LiPo thanks to the reduced weight and low internal resistance. 

Battery Model HV Shorty 3S LiPo
Application Crawlers, Drag, Boats & Aircraft
Type Silicon Graphene 
Voltage 11.4V nominal
Capacity @11.1V
Capacity @11.4V
Connector Type
Balance Connector
4 Pin XH
Number of Cells 3 Cell
Configuration 3S1P
Dimensions (WxLxH) 43x93x25.7mm
Maximum Charge Rate 10C (45A)
Burst Current
Watt Hour @11.4V  51.3Wh

View Manual Icon small Warranty Info Icon small


  • (1) ProTek R/C Battery w/T-Style Connector


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.

This product was added to our catalog on March 13, 2020

Verified Owner
Sunday, Nov 29 2020 (11 months ago)
ProTek RC 3S 120C Low IR Si-Graphene + HV Shorty LiPo Battery (11.4V/4500mAh)
this batt work great for it's intended purpose I use it in my trx4 with a hobbywing AXE on a 2300kv motor I was hesitant on buying one after reading the reviews but realized that the batt was being used in race trucks. these batt are crawler specific so keep that in mind before purchasing them I would recommend them
Verified Owner
Friday, Jun 4 2021 (5 months ago)
ProTek RC 3S 120C Low IR Si-Graphene + HV Shorty LiPo Battery (11.4V/4500mAh)
Sadly, and though I was really hoping the bad reviews were just the usual sour grapes from the clueless, but it doesn’t seem to be the case. Inferior chinese cells, poorly wired or whatever the case after a 20 minute crawl/bounce in 80 degree weather had a hissing pack that didn’t seem hot, but was already trying to get puffy... you could squeeze it for extra extra hiss....

Will likely be calling Amain but as I already switched connectors to something useful, I’m betting I own a door stop.
Verified Owner
Thursday, Nov 26 2020 (11 months ago)
ProTek RC 3S 120C Low IR Si-Graphene + HV Shorty LiPo Battery (11.4V/4500mAh)
They're great batteries for crawlers if you want to use one battery that's not the lightest, but has great size, weight, and capacity for an all day crawl. I put 2 of them inside my Mojave (which is what LiHV batteries are for, fast trucks) and one of these 4500 packs had a completely dead cell afterward... That's not good reliability, or quality for that matter. Amain will probably send me a new one because they're awesome, but this is a top notch product from them, and it came unbalanced VERY quickly. I still have one that I now only use in crawlers and its great, but that it just strange that this happened.

To be fair, my mojave also did the same thing to a spektrum orange 5000 pack... hmmmmmmmmmm.
Verified Owner
Saturday, Aug 29 2020 (about a year ago)
ProTek RC 3S 120C Low IR Si-Graphene + HV Shorty LiPo Battery (11.4V/4500mAh)
The battery is swollen after the second race. I pulled the battery out with difficulty from my Losi.

30 USD per cycle. Great value for money.
Verified Owner
Monday, Sep 6 2021 (7 weeks ago)
ProTek RC 3S 120C Low IR Si-Graphene + HV Shorty LiPo Battery (11.4V/4500mAh)
I bought two batteries about a year ago used about a dozen times and now one has puffed up and the other feels like it's not far behind. Stored them in winter in a stored setting and always gave a slow charge when using. I'm using a Traxxas charger.
Verified Owner
Friday, Jun 25 2021 (4 months ago)
ProTek RC 3S 120C Low IR Si-Graphene + HV Shorty LiPo Battery (11.4V/4500mAh)
Battery was great for exactly 59 days. Bought April 26. Died June 25.
Verified Owner
Sunday, Jul 4 2021 (4 months ago)
ProTek RC 3S 120C Low IR Si-Graphene + HV Shorty LiPo Battery (11.4V/4500mAh)
perfect battery for axial capra, perfect fit and long run times. also run in my TRZ4
Verified Owner
Wednesday, Jun 2 2021 (5 months ago)
ProTek RC 3S 120C Low IR Si-Graphene + HV Shorty LiPo Battery (11.4V/4500mAh)
I initially purchased this battery because it is one of the few that fit into the Capra's small battery compartment. I will buy the next ones because of how well they perform. Maintenance is supper easy with a Protek charger. I don't know how long you can run on them, but I know I get a full hour of crawling in and there is still juice left in them.
Verified Owner
Wednesday, Apr 21 2021 (6 months ago)
ProTek RC 3S 120C Low IR Si-Graphene + HV Shorty LiPo Battery (11.4V/4500mAh)
I have had 2 of these now my main batteries i use atleast a few times a week. First one lasted a bit more then a year maybe 1 cell died not puffy at all. 2nd battery cells all charge great it got puffy in just about 5 months still using it. Using in crawlers
Verified Owner
Sunday, Feb 28 2021 (8 months ago)
ProTek RC 3S 120C Low IR Si-Graphene + HV Shorty LiPo Battery (11.4V/4500mAh)
Got two of these batteries, one of them worked fine out of the box; however the second battery would not charge on my charger. The charger would keep saying "low voltage", and an external voltage checker wouldn't even turn on when plugged into the balance plug.

Since the battery cells weren't puffed up, I charged the second battery on NiMH mode to get some voltage into the cells, and then swapped to LiHV mode. Two of the cells are lagging pretty far behind in voltage compared to the good cell (3.85v vs 4.35v for the good cell). I've put a few slow charging/discharging cycles on the pack and the two bad cells are starting to recover.

Not something I'd want to see from a $60 pack. I'm not too hopeful on the longevity considering it came DOA but it was at least able to be revived somewhat.
Verified Owner
Monday, Dec 28 2020 (10 months ago)
ProTek RC 3S 120C Low IR Si-Graphene + HV Shorty LiPo Battery (11.4V/4500mAh)
battery turned out to be no good,one cell died,wish i had known before daughter bought me another.Hopefully this one lasts longer than 7 months! would not buy again
Verified Owner
Wednesday, Jun 24 2020 (about a year ago)
ProTek RC 3S 120C Low IR Si-Graphene + HV Shorty LiPo Battery (11.4V/4500mAh)
Great battery, light weight and high capacity! I charge this on a std. Lipo Charger and since this is a LiHV pack the charger doesn't seem to know when to cut it off even with the correct voltage cutoff points set. I just keep an eye on it and switch it off when each cell reads 4.20v. I Have yet to try it charged to LiHV specs.