ProTek RC LiPo Hump/Short Receiver Battery Pack (Kyosho/Tekno) (7.4V/2600mAh) (w/Balancer Plug)
About this part
This is a Li-Poly 2600mAh receiver battery hump 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 gas powered race cars and is a direct fit in Kyosho and Tekno 1/8 scale battery boxes. Overall weight of your race car will be significantly reduced over the use of typical NiMh receiver packs. 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 for your servos will ensure consistent performance at the start and end of the your race compared to typical NiMH receiver battery 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.
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). 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).
Specifications:
- Capacity: 2600mAh
- Case: Lexan shell covered with heat shrink
- Weight: 100 grams (including wire and connector)
- Li-Po cell arrangement: 2S2P
- Nominal voltage: 7.4 Volts
- Dimension (LxWxH): 54x31x31mm
- Connector: JR Style with thick 20AWG Silicone Wire
- Balancer Plug: XH style (Align, E-Flite compatible)
- Recommended Application: 1/10th & 1/8th scale vehicles, 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...Reviews3.5 · 15 reviews
Fits NT48 2.0 perfectly! Word to the wise don’t forget to check the battery voltage periodically. Newbies Attention: Nitros do not shut battery down at 3.5v if you run it below 3.5v you’ll rise damaging battery Solid purchase!!!!
Perfect battery for your Kyosho TK12 buggies, last over an hour of run time for those long A mains
I have one and let me tell U guys,it hold a very good charge,O I have it in my Kyosho mp 9 tki 3,about to get another one for my Truggy.sir.
Can't recommend ProTek batteries in general. In my case with this battery, it was left in my trunk on a cool day (60-70 degrees). I went to my trunk to get my RC things out and noticed smoke coming from one of my storage boxes. They had been in there for less than 24 hours. I smelled burning plastic and saw smoke bellowing from one of my tool boxes. I immediately dowsed the fire. Upon observing the battery there was no indication of puncture or shortage. The battery just spontaneously combusted in the trunk of my car. All of my lipo batteries were next to each other, so if this battery had been any more on fire I would have several lipo batteries on fire in my trunk. If I hadn't gotten my RC boxes out of my car that day, I dont think I'd have a car and there'd be thousands of dollars of damage to our property. If you're looking for quality RC products, get ProTek. If you're looking for quality batteries, look elsewhere.
So I bought this with my NT48.3 kit last year. I only got to use it a few times last fall before putting the truck away for the season. I stored the battery at 3.8volts. I am now getting all my gear out again and when I went to charge up the battery the cells had both dropped to 3.6 and 3.4 volts between the two cells. When I put it into balance the charger showed both cells jumping up to 4.10 and not taking any further charge. I decided to try and cycle on the charger to see if I could get the cells back to life. No such luck. This is a big disappointment considering the cost of these... As such, I cannot recommend this battery.
Reviewers are split on this 7.4V 2600mAh receiver pack. Many 5-star reviewers report it fits Kyosho and Tekno trays well (NT48, NB48 2.0, MP9, TK12, D815), holds charge, and lasts a full race day or more. Several low-rated reviews describe serious failures: a cell dying within a race day, a battery that would not accept charge after one day, a power lead disconnecting at the factory solder joint causing a loss of control, and one report of smoke and fire while stored in a car trunk, though that reviewer found no visible damage. One reviewer also reported cells dropping to low voltage after storage and failing to recharge. Some reviewers note the need to monitor voltage and avoid running the pack too low. Failure reports are a recurring concern.
- + Good fit in Kyosho and Tekno receiver trays
- + Lasts a full race day or longer
- + Holds charge well
- + Cells balance well
- − Factory solder joint and wire failures
- − Cells failing or not accepting charge after short use
- − Fire reported during storage in a car
- − Voltage can drop low if not monitored