Folding ebikes ship with small batteries because the frames have no room. The Seenrongyuan 48V 20Ah squeezes 960Wh into that space, roughly triple the typical folding pack. Early buyers rate it 5 stars, but the sample is tiny, so read this as early promise, not proof.
Specs and Value
This battery has been rated at 48 volts and has a capacity of 20 amp hours. Therefore, the battery contains 960Wh of energy. In terms of folding bikes, this is a lot of energy. Most folding bikes carry 300 to 400Wh packs. Due to the increased capacity of this battery, your options for riding distances increase greatly. You are no longer restricted to going only a few miles to the local grocery store.
instead you may now travel miles to work. Additionally, the The 48V rating matters as much as the amp hours. Higher voltage delivers power with less current, which keeps the pack cooler under load. A 36V system fades on long climbs. The extra voltage headroom keeps speed up when the road tilts.
Value-wise, the density of the cells is what makes this battery worth considering. The tradeoff is weight: extra cells add heft you will feel every time you lift the folded bike.
Form Factor and Folding Fit
The design of folding bicycles is typically based around creating geometry that allows the frame to fit into tight spaces such as trunks and corners. As a result, the available space within the frame is generally very confined. This Seenrongyuan battery was designed specifically to address that issue. It utilizes a mounting design that fits directly into the common mounting locations found on numerous folding bicycle designs. The seller confirmed compatibility with several popular folding bicycle frames. Compatibility is the biggest concern for the potential purchaser.
If a replacement battery is too wide, it will prevent proper closure of the folding design. If it is too long, it will interfere with the handlebars during turns. By utilizing a slimmer profile than typical ebike batteries, this battery maximizes the height of the down tube and therefore does not limit the bikes ability to fold completely closed. The battery is like a compact suitcase that fits well into the trunk of a small vehicle while containing an unexpectedly large quantity of clothing.
Real-World Range and Power
In regard to range, the specifications clearly demonstrate its advantages. ### Range Math
At a typical 15Wh per mile, 960Wh works out to roughly 64 miles on paper. However, in addition to energy consumption and energy storage, there are other real-world factors including wind resistance, weight of the rider, and elevation gain that will all reduce your actual mileage. Wind, rider weight, and hills trim that number, but the margin over a stock folding pack is large enough that you stop watching the meter.
Similarly to how energy consumption affects range, power output is affected by both voltage and amperage delivered by the motor controller. On a hill, a motor requires torque to counteract gravitational forces. A higher voltage system supplies more voltage (headroom) for maintaining speed while climbing. On a steep incline, if you had a lower voltage system, your bike may slow down and lose momentum because your motor lacks adequate torque. This battery provides your motor controller with enough power under heavy loads so you receive a smooth ride from start to finish of each discharge.
What Amazon Reviewers Are Saying
Early Adopter Verdict
The listing shows 5 stars, but from a very small sample. These are early adopters, not a mass verdict. At least according to these early adopters, they are satisfied with regards to fitment in their folding bicycles. What the early buyers do confirm is fitment, which is the biggest hurdle in folding-bike battery replacement. What nobody can confirm yet is cycle life past 500 charges. Buying now means betting on the manufacturer before the market has.
Who Should Buy This
Buy it if your folding bike's range keeps you close to home and you want the 48V headroom for hills.
Skip it if you need a long review history before committing, or if every pound matters on a bike you carry upstairs. A 20Ah pack is not light.
Compare it against the rest in our ebike battery comparison table, or dig through the GoMotorbikes blog.
Check the latest price on Amazon.
Frequently Asked Questions
Will this battery fit my ebike? Compare the it (14.37 x 5.12 x 3.43 inches) to the this one slot in your ebike to determine compatibility. Although your ebike brand may be represented on a list of compatible brands, the actual compatibility of a battery with your ebike depends on the specific the unit and connector type used by your ebike. It is recommended that you measure the battery slot in your ebike before ordering to confirm compatibility.
What type of connector does this battery use? The connector type is not explicitly identified in the product listing. It is suggested that you contact the seller prior to ordering to confirm the type of connector required by your ebike. There is more risk associated with incorrectly selecting a connector type for a folding ebike battery than there is for an external-mounted battery because the connector is usually mounted inside the battery and cannot be easily replaced in the field.
Is 960Wh enough for my commute? For the vast majority of folding ebike users, 960Wh is more than sufficient to meet the energy requirements of their daily commute. The real-world range provided by 960Wh on a folding ebike will vary depending on your specific riding conditions, but for most users, the maximum possible range provided by 960Wh will far exceed the total distance of their daily commute (20 miles round-trip or less).
How do I know if my folding ebike uses 48V? Verify that your ebike's existing battery is labeled 48V or 54.6V (the maximum charge voltage for a 48V battery). Additionally, you can verify whether your ebike uses 48V by examining the rating on your ebike's charger. All ebikes in the sub-1000W class either use 36V or 48V systems.
Can I install a 36V battery on a 48V ebike? Installing a battery that is a different voltage than the system voltage of your ebike will cause damage to your controller and is strongly discouraged. Your ebike's battery should be installed with a voltage that is identical to the system voltage of your ebike.
How long will it take to charge? Using the charger that comes with this battery, you can expect a full charge from an empty battery to take approximately 5-7 hours. If you choose to use a charger that has a higher amperage rating than the included charger, you can potentially reduce the charging time. Only use a charger that has been specifically designed and rated for 48V lithium-ion chemistry (maximum charge voltage of 54.6V) to avoid the potential for overcharging.
What maintenance can help extend the lifespan of my battery?
Two things that help to protect the life expectancy of your lithium-ion battery are proper charging habits and proper storage habits. Try to avoid completely draining your battery, as doing so causes stress to the lithium-ion cells. Storing the battery at 40-80% charge when not in use for an extended period of time will also help to maintain the health of the cells over time. Store the battery away from extreme temperatures (heat or cold) as they both cause chemical degradation of the cells faster than normal wear and tear from repeated use.
The manufacturer claims that the cells will last for over 1,000 cycles. Proper use of your ebike, as well as the care of your battery, can help to increase the effective lifespan of the battery far beyond 1,000 cycles.
Can I use a non-OEM charger? Yes, you can use a non-OEM charger, but the charger must be rated for the proper maximum charge voltage (54.6V) and the proper amperage rating for your desired charging speed. Installing a charger that is rated for the improper voltage will potentially damage the BMS or cells of your battery. While it is acceptable to install a charger with a higher amperage rating than the included charger (to shorten the charging time), the included charger is the safest choice.