ProTek RC LiFe Futaba Transmitter Battery Pack (6.6V/2100mAh) (3PV/4PK/4PM/4PLS/4PX/4PV/7PX/7PXR/10PX/16SZ)
About this part
This is the ProTek R/C LiFe Car Transmitter Battery Pack, and is intended for use with the Futaba 3PV, 4PK, 4PM, 4PV, 4PLS, 4PX, 7PX, 10PX, 16SZ, and 18SZ Transmitters. Lithium battery technology is evolving. With cell dimensions that fit anywhere a standard Li-Po battery will and rapidly increasing capacity, LiFe chemistry will soon set the standard that all others are judged by. With the ability to deliver 1000+ usable cycles, and a life span up to 4 times longer than Li-Poly batteries (when cycled under the same discharge conditions), these batteries offer the user an excellent balance of performance and value. LiFe batteries are more durable than Li-Poly and are able to handle a higher level of abuse when compared to Li-Poly without the risk of pre-mature failure. Unlike Li-Poly, LiFe cells can be stored in a fully charged state with little to no loss in stored power, and can be discharged deeper with less risk of damage to the cells. Most importantly, LiFe batteries are SAFE! There is no risk of combustion! LiFe cells will not catch fire or explode when over charged, or after a deep discharge.
What about the voltage?
A 2 Cell LiFe battery produces 6.6 volts nominal, which is almost a full volt less than a 2 Cell LiPo battery. The LiFe battery is not meant to replace the performance of a Li-Po battery, it is simply another option. LiFe offers the user a battery with a good discharge curve that is better than that of a NiMH battery, but without the risk of damage or fire that exists when a LiPo battery is abused.
NOTE: Brand new LiFePO4 batteries have been found to fail prematurely if they are deep discharged below below 33% capacity too early. A break-in period of 20 cycles is currently recommended. While testing has shown that this battery can be charged at up to 3C rates, it is recommended that this battery not be charged at rates higher than 1C to maximize the lifespan of the battery. Additionally, LiFe batteries should not be discharged below 2.5V per cell to avoid pre-mature failure and maximize battery life span.
We also recommend you REMOVE the batteries from your cars or radios when you are done, or at least unplug them to avoid accidental over discharge if the unit is left on.
IMPORTANT:
1) You will need a LiFe specific charger to charge the pack (NiMH, NiCD or Li-Poly only chargers WILL NOT WORK!)
2) You must not discharge the LiFe battery pack below 33% capacity during the break in period or below 2.5V per cell after break in.
3) It is not recommended that you charge this LiFe battery pack at amp rates higher than 1C.
4) Read the instructions carefully before operating this battery.
Features:
- Safe chemistry will not explode or catch fire
- More mAh per gram compared to NiMH cells, meaning lighter models, and longer runtime
- Virtually no "self discharge", so the battery is always ready to go even weeks after charging.
- Superior voltage performance under load compared to NiMH cells, with consistent torque and speed.
- Fast charge time
Specifications:
- Voltage: 6.6V
- Capacity: 2100mah
- Chemistry: LiFePO4
- Balance Charge Plug: XH
- Charge Rate: 1C
- Compatibility: Futaba 3PV, 4PK, 4PM, 4PV, 4PLS, 4PX, 7PX, 10PX, 16SZ, and 18SZ
- Discharge Plug: JR/Futaba
- Dimension (LxWxH): 76x41x17mm
- Weight: 105g
ProTek R/C is an AMain Sports & Hobbies brand.
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...Reviews4.3 · 25 reviews
Got one for my futaba 4px has worked great so far have used it for 6 hours straight and hasn't moved between 6.5 and 6.4 im new to this type of battery and almost sent it back. After i charged it to 7.2v i unplugged it and voltage dropped to 7.1 then 7.0v i put it in my radio set the battery option for the life battery in my radio. And noticed the voltage kept dropping. I looked around on the net didn't notice much info about this. The voltage dropped down to 6.5v after about 5 minutes. I contacted amain tech and was told this is normal and it will take along time before it drops Again and it was doing what its supposed to do stabilize around the 6.6v level and that 6.5 to 6.4 is normal. its just the chemistry of the Life battery. So far im very happy have got alot of hours on the radio over 5 hours of just goofing in options along with 6 hours of run time running my car and its still at 6.5 to 6.4v great battery Im happy with my purchase.
If you are looking for a good battery for your 4pk then look no further! For a weekend racer like me you might only have to charge this thing 1 or 2 times a season. I put almost 10 hours on my transmitter before charging it and only put 850mah back in. Great battery and great price!
This battery has worked great for me. It lasts a very long time in my Futaba 4PX. I also want to note that this fits inside a Futaba 3PV as well.
Ordered one up with my 7px and it's perfect. Better than expected... seems to last longer with every charge. So much better than using AA batteries.. Update: 18 months in and the battery still lasts so long that I charge it less than once per month. If I were hitting up the track 4 or 5 days a week it would be more often, but I still get several hours of use before the battery meter on my transmitters screen shows the capacity drop below 1/2, which is when I typically charge it. I would say Ive only had to charge it a dozen times. The only downside I can find is how long it takes to charge. I never go above 1c but for such a small battery Im surprised at how it takes over 2 times as long to charge as my 6500mah Protek 4s LiHV packs at 1c.
I a using it in my radiopost ts401 since there bigbang life is no longer being made. It fits perfectly, same size as stock battery. Just make sure to change low voltage cutoff
Reviewers largely praise the ProTek LiFe 6.6V/2100mAh pack for long run times in Futaba transmitters, with many reporting multiple race days or a full weekend per charge and a steady 6.6V output versus AA batteries. Fit is generally described as good, though one reviewer noted some play in the compartment and another found it slightly loose. Several reviewers mention a slight initial voltage drop after charging that they considered normal. The main recurring problem is cell failure: a few reviewers reported one cell dropping out or the pack dying early, including one dead-on-arrival unit that was replaced, and one reviewer said a replacement also failed within two months. Charging time was mentioned as relatively long by one owner. Reviews are mostly positive, with a minority reporting early failures.
- + Long run time per charge
- + Steady voltage compared with AA batteries
- + Lighter than stock NiMH pack
- + Fits Futaba transmitters well
- − Cells failing early in some units
- − Dead-on-arrival unit
- − Loose fit in some compartments
- − Slow charging