according to famtom racing 5200mah 50c lipo pack, which is same as thunder power 5200mah 50c http://www.fantomracing.com/proddeta...?prod=FAN26550
50C MAXIMUM HORSEPOWER - The most advanced R/C racing LiPo batteries on the planet, featuring NEW Generation 4 chemistry!
Check out these specs & features...
•Voltage: 2 Cell (2S) / 7.4V
•Continuous Discharge (C-rating): 50C Continuous (260 Amp) / 100C Burst (520 Amp)
•Dimensions: (L) 138mm (5.43 in.) x (W) 46.5mm (1.83 in.) x (H) 23.5mm (.925 in.)
•Weight: 309 grams (10.90 ounces)
•Maximum Charge Rate* : 6C (31.2 Amp)
*Charge at maximum rate ONLY with approved chargers. Approved chargers include: Hyperion - EOS Series (w/built-in balancer), FMA - CellPro Series, Junsi - iCharger Series, Thunder Power - all models. Maximum charge rate is 2C with all other charger/balancer combinations. Maximum charge rate is 1C when charging without a balancer.
•The most powerful and fastest R/C racing LiPo battery available in its class...period!
•NEW Generation 4 chemistry, using premium Japanese-made materials, delivers never seen before low internal resistance, cycle life, and power!
•300+ cycles with no discernable loss in performance equals the best value per cycle in the R/C industry today!
•Fast 6C charge rate capability* with no effect on cycle life!
•True and accurate mAh and C ratings.
•Wire leads feature high-amp 10-gauge wire and Deans® Ultra Plug® connector.
•Available with optional Traxxas® connector at no additional cost.
•Drop-in convenience fits all chassis designed for traditional 6-cell sub-c battery packs.
•Easy maintenance; requires no complex charge, discharge, or cycling procedures.
•No memory effects from charging and/or discharging. Does not require complete discharging after each run. Pack can be charged from point of previous discharge state.
•Includes detailed instruction sheet.
•Assembled in the USA!
i know roar rule, that only allow 1c charge on lipo. i think it is o.k to max charge in club race or parking lot bashing if it is safe.