What is the difference between 72V 20Ah and 72V 32Ah?

2 Answers
SanNova
07/30/25 1:25am
The differences between 72V 20Ah and 72V 32Ah are as follows: 1. Current difference: Ah stands for ampere-hour. 20Ah means it can discharge at 20 amps continuously for one hour, while 32Ah means it can discharge at 32 amps continuously for one hour. In terms of current alone, 32Ah is significantly stronger than 20Ah. 2. Capacity difference: At the same voltage, the battery capacity of 20Ah is smaller than that of 32Ah. 3. Weight difference: The 20Ah battery appears larger in size compared to the 32Ah, but the 32Ah battery is heavier. 4. Range difference: With the same rated voltage, the 32Ah battery has a larger energy storage capacity, allowing it to travel a longer distance than the 20Ah battery, providing a greater riding range.
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LaAubrey
08/15/25 7:05am
Both are 72-volt electric vehicle batteries, with the 20Ah one having a smaller capacity and the 32Ah one a larger capacity. Last year, I used the 20Ah battery all the time. It was decent in terms of speed, but each full charge only lasted about 40-50 kilometers before needing a recharge. What was particularly annoying was that on long trips, I might have to find a place to charge midway, which was really inconvenient. Later, I switched to a 32Ah battery, which could go an extra 30-40 kilometers on a full charge, making the whole trip much more worry-free since I didn’t have to constantly think about recharging. The 20Ah battery is lighter, putting less strain on the front of the bike, making it easier to handle on slopes. However, the 32Ah battery lasts longer, especially when using air conditioning in summer or climbing hills without issue. In short, if you only need it for short commutes, the 20Ah is sufficient, but if you frequently travel longer distances, the 32Ah is more practical. Price-wise, the 32Ah battery is about 100-200 yuan more expensive, but it’s cost-effective in the long run since you’ll need to replace it fewer times.
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