How many kilometers can a 48V 20Ah Electric Bike Lithium Battery Run?

 How many kilometers can a 48V 20Ah Electric Bike Lithium Battery Run?

Many electric bikes come with a 48V 20Ah lithium battery. This type lithium-ion battery is also a regular Ebike lithium battery, one of the most easily purchased lithium-ion battery specifications. So many electric bicycle owners want to know how far 48V 20Ah Ebike lithium batteries can run in their electric bicycles, the following gives you an analysis.To get more news about 48v VS 52v ebike, you can visit magicyclebike.com official website.
In theory, a bike with two riders, loading 150 kg, 48V 20Ah battery pack could run 40 Km, and a bike with one rider could run 70 km with a smaller accelerator. Accelerator pedal size has a big effect on mileage. The 48V12A battery, theoretically, could run 40-50 kilometers with 300 pounds of cargo.

The question of how far a 48V 20Ah lithium battery can run comes down to the capacity of the lithium battery , and there are many other objective factors. The weight, speed, life span, mileage and starting performance of the whole vehicle are all closely related to the battery of the electric bicycle.

Lithium battery specifications are measured in voltage (V) and capacity (Ah) , and consumers can have a look at the electric bicycle’s specs when choosing an Ebike. How far a 48V can run is also a big demand for battery capacity, which is typically referred to here as a one-day round trip. Battery power and motor power determine the distance of the mileage.
52 volt batteries have become popular, but are they really living up to the hype? Are they safe? We sold 52 volt batteries for about 1 year because of the constant customer requests, this is what we learned and why we no longer advise using them.

1- 60% of 52 volt packs we sold had failures within 1 year!

2- Squeezing in the extra 4 cells for a 13.5 Ah or 5 cells for the 17.5 Ah packs means you can no longer use the frame that mechanically holds all the cells together, resulting in broken spot welds and nickel strip. Cells would literally fall out when opening the case. All the cases on the market were designed for 48/36 volt packs, 52 18650 cells for 13.5 Ah, and 65 18650 cells for 17.5 Ah, with 48 volts being the largest pack size available not 56 or 70 cells. Because the cell frame holder cannot be used, the packs are built by hand and not by CNC spot welding robots, resulting in varying levels of quality. The nickel strip which is meant to be an electrical connection only, ends up being most of the mechanical strength of the pack. Some packs have hot glue or heat shrink to try and mechanically hold the cells together, but it's a hack and over time and vibration they fail.
3- The BMS is not popular anywhere else in the world except for US and as a result there is low demand, low production, little to no quality improvements and the failure rate is higher for 52 volt BMS vs 48 volt BMS which are widely used and constantly improving.

4- Bafang and many other motor mfgr's do not want 52 volt packs used on their 48 volt motor systems and firmware has been updated to inhibit their use. For example, new motors from Bafang will fail for error code 7 when the 52 volt battery is fully charged at 58.8 volts. Dealers revert back to older versions of firmware to get around this, but is rolling back firmware a good solution? We don't think so. Any vendor selling you a bafang mid drive that works with 52 volts is installing years old firmware to make it work.

5- Higher voltage from 54.6v to 58.8v may give you a 1 mph speed increase because higher DC voltages make the DC motors spin faster, but it comes at a cost. The electrical components are not rated for these higher voltages which can push the spec tolerance too high resulting in controller failures. The speed increase is barely noticeable and really not worth the trade off of in quality pack construction.
6- Worst of all.... we had a Hailong 52 volt pack catch fire! It wasn't locked properly and came off the bike hitting the ground. It cracked the case but still worked so all appeared fine, but hours later it went into thermal runaway.

The battery is the heart of the system. It is critical that your investment last and not have failures. Many of our customers use their bikes to commute to work daily. Imagine your daily commuter breaking down on your way to work. The cool, new, better 52 volt battery upgrade that has been hyped up leaves you stranded. Unless you have a warranty, or know how to repair a battery yourself, proceed with caution.