ProTek RC Li-Poly Hump Receiver Battery Pack (7.4V/2300mAh) (w/Balancer Plug)
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 gas powered race cars. 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.
Donít 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).
Why must Li-Poly receiver packs be used with a voltage regulator?
Although the Li-Poly battery packís nominal voltage is 7.4V, when it is fully charged the voltage output is 8.4V. The 8.4V output exceeds the safety level of most receivers and servos on the market, so you must use a voltage regulator with these Li-Poly receiver packs to decrease the voltage to safe levels that your receiver and servos can accept.
1) You will need a Li-Poly specific charger to charge the pack (NiMH or NiCD only chargers WILL NOT WORK!)
2) You must not over discharge the Li-Poly battery pack.
3) Read the instructions carefully before operating this battery.
CRASH Protection Guarantee!
ProTek RC offers a 50% Damage Replacement program for one (1) year after original purchase date on all batteries that have been damaged due to impact, over-discharging, or improper charging that have not been modified or disassembled. The damaged battery will be replaced by a comparable battery at 50% off of its retail cost.
- Capacity: 2300 mAh
- Case: Lexan shell covered with heat shrink
- Weight: 94 grams (including wire and connector)
- Li-Po cell arrangement: 2S2P
- Nominal voltage: 7.4 Volts
- Discharge capability: 8C continuous (18.4A), 16C max (36.8A)
- Dimension(mm): 31 x 32 x 55mm
- 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, Helicopters and Airplanes
This product was added to our catalog on July 7, 2009.
They fit in the box if you remove the clear plastic cover under the shrink wrap. Although they give massive amounts of run time 90mins +, they don't seem to last long at all. Maybe 15 charges before a cell puffs and then my balance charger says the battery is no good. I followed all the instructions included with the battery (storage charge when not in use, not running it too flat etc etc) It could well be the limited life is due to the fact they don't like the confines of the Losi battery box and vibration (they are still a tight fit) I gave this battery a poor rating due to the short life.)