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Power rating (Watt-hour):
› Some products state a recommended Watt hour rating for a battery to be used with that product. The Watt hours can be approxi-
mately calculated knowing the battery capacity and the voltage
» For Example: if a battery is 2000mAh and the voltage is 8.4V the Watt Hours (Wh) is equal to 2000 x 8.4 = 16,800mWh =
16.8Wh
Recommended Discharge Voltage Cut-offs:
• For maximum cycle life and safety, LiPo batteries should never be discharged below 3.3V per cell when discharged at a rate of 1-4C. For
this reason, many electronic speed controllers have a special "LiPo Mode" which activates a cut-off of power when the ESC measures the
battery voltage in a dangerous range
• For maximum cycle life and safety, NiXX batteries should never be discharged below 0.9V per cell when discharged at a rate of 1-4C. The
use of an ESC low voltage "cut-off" mode is not necessary with NiXX batteries
Storage Voltages:
• Although the Ascend charger does not offer discharge capabilities it is important to understand this information about your batteries since it
is critical to both the safety of the battery and the cycle life.
› Always consult the battery manufacturer's documentation for storage information specific to that battery
» WARNING: You should NEVER store LiPo batteries at full charge for more than a few hours at
most (and they should be stored at temps of 40-75 degrees Fahrenheit whenever possible to help
prevent swelling and/or loss of performance/capacity)
› LiPo batteries should be charged (or discharged depending on their state prior to storage) to approximately 50% of their rated
capacity (approximately 3.85V per cell). The storage time at this voltage should not exceed 6 months and a use cycle and return to
storage mode is recommended every 3 months
› The storage voltage of NiXX batteries is not as critical as LiPo but they should be stored in cool conditions and at a low cell voltage to
prevent memory buildup and loss of capacity and performance
Simple • Capable •
Safe
INDEX CONTINUED
NOTES
13
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