Battery Capacity Formula:
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The battery capacity calculation determines the amp-hour (Ah) rating of an e-bike battery needed for a specific energy requirement. It helps in selecting the right battery for your e-bike based on your escape energy needs and system voltage.
The calculator uses the battery capacity formula:
Where:
Explanation: The formula converts energy requirements (in watt-hours) to battery capacity (in amp-hours) by accounting for the system voltage.
Details: Proper battery sizing ensures your e-bike has sufficient range for your needs without carrying unnecessary weight. It helps prevent battery over-discharge which can damage the battery.
Tips: Enter your total energy requirement in watt-hours and your e-bike system voltage in volts. All values must be positive numbers.
Q1: How do I determine my escape energy needs?
A: Multiply your average power consumption (watts) by the duration (hours) you need the battery to last.
Q2: What's a typical voltage for e-bikes?
A: Common e-bike voltages are 24V, 36V, or 48V systems.
Q3: How does battery capacity affect range?
A: Higher capacity batteries (more Ah) provide longer range but are heavier and more expensive.
Q4: Should I include a safety margin?
A: Yes, it's recommended to add 20-30% to your calculated capacity to account for efficiency losses.
Q5: Can I connect multiple batteries?
A: Yes, batteries can be connected in parallel to increase capacity (Ah) while maintaining the same voltage.