What's included: 2x BestKalint IMR 26650 1100mAh 3.7V 90A 20C High Drain Li-mn Rechargeable Flat-top Battery How to know a battery (FOR REFERENCE) VOLTAGE-nominal voltage (3.7v) CAPACITY-4500mah: this battery will give 4.5amps of current for one hour(theoretically) WEIGHT-about 200 grams (package): A battery has a huge effect on the planes power to weight ratio. Two extra ounces will make a big difference in your planes performance. Jets need a better than 1 to 1 power to weight ratio to perform like a jet. PHYSICAL SIZE-26650 (mm)standard BATTERY CONNECTOR-try to find a battery connector you like and stick to it. (not include) DISCHARGE-20C: the "C" rating is an multiplication of the capacity. The millamp hours divided by 1000, times the C rating, equals the maximum continuous discharge amperage the battery is capable of sustaining. → mah/1000 x C= Amps, so 4500mah/1000 x 20C= 90Amps. CHARGING RATE-a slower charge is always better for the health of your battery.
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