When using the following link to see current pricing, click the “see all 12 styles” button. The seller states that this is a new item, and there are no refurbished items available. In addition, the seller offers free shipping. There is a free return policy. However, the buyer pays for return postage.
The primary specification for the Yose Power 36V 17.4Ah silver fish ebike battery is its nominal voltage (36 volts) and its amp hour rating (17.4Ah), which results in approximately 626 watt-hours of stored energy. While this is a large amount of storage relative to many other silver fish batteries on the market (typically ranging from 10Ah to 13Ah), this pack is a good example of how closely-packed cells can be arranged within a very narrow housing.
The manufacturer lists two conflicting motor ranges on this product page. The title mentions 100, 900 watts of compatible motor usage. However, the bullet points mention that the battery supports motors ranging from 100 w to 700 w. This contradiction may cause concern when deciding whether to purchase this battery.
Yose Power indicates that the battery retains 78% of its original capacity after 700 charge/discharge cycles. If this estimate holds true in real-world use, then this pack would provide similar longevity to generic replacements. However, since the only data point supporting the validity of this statement comes from a single review on this product page, the likelihood of this being accurate remains uncertain.
The maximum discharge rate listed by the manufacturer is 10 amps. However, the manufacturer indicates that the pack is capable of producing a 30 amp peak. This may allow for sufficient support of motors above 600 watts for short periods of high power operation.
While compatibility with XH370-10J and ZL1010-F mounts is indicated, please ensure that your e-bike was manufactured with either One of these mounts prior to purchasing this battery. Additionally, while the pack’s dimensions appear to align with typical silver fish packaging, please verify your old battery’s dimensions before placing an order. Not all silver fish batteries are identical in every respect including size and connector type.
An additional feature offered by the manufacturer is a power-saving mode that can be enabled via a provided switch. Also provided is an LED display on the side of the pack to indicate remaining charge level.
If you have purchased an ebike battery previously and relied on guessing the charge level, you will likely appreciate having an LED display to let you know how much charge remains. Many cheap ebike batteries require you to rely solely on your own intuition to determine how much charge remains in the battery.
Range and Charging
The included charger produces an output of 42V and 3a. According to Yose Power, the battery will take approximately 8 hours to completely charge at this output level. Based on a previous owner’s experiences with faster-charging ebike batteries (producing 5A of output), you should plan to leave this charger plugged into a wall outlet overnight or during your workday in order to achieve a full charge.
As stated earlier, estimating mileage is always somewhat subjective depending upon your riding habits, terrain, rider weight and tire pressure. However, as a general rule of thumb, a motorized bicycle with a motor producing between 300 and 400 watts of power using light-assistive pedaling may yield anywhere from 25 to 50 miles of total travel distance. On the other hand, a motorized bicycle utilizing moderate-to-heavy assistive pedaling may produce anywhere from 40 to 70 miles of travel distance. Using extreme assistive pedaling, such as that required to climb extremely steep inclines at full throttle, the overall travel distance achieved may drop significantly below this estimated range.
Because this battery maintains a constant nominal voltage output (i.e., 36V) during discharging, and therefore has a relatively flat voltage curve compared to other batteries with varying voltage outputs, it may result in improved efficiency compared to other batteries with varying voltages when utilized with motors requiring consistent input voltage.
For instance, if your motorized bicycle utilizes a 48-volt drivetrain system, this battery cannot be used because it only provides 36 volts.
However, Yose Power manufactures versions of their silver fish packs in both 36 volt and 48 volt varieties. Therefore, if you require a version specifically suitable for a 48V drivetrain system for your motorized bicycle, you may obtain One directly from Yose Power via their official website.
Also worth noting is that availability fluctuates frequently regarding quantity of available stock. Therefore you may want to act quickly once you find it online at an acceptable price point.
The Review Problem: What One Star Means Here
There exists a single review associated with this product listing on Amazon.com. Furthermore, that single review is rated at One star. To me personally, One negative review represents a huge red flag. With that said i believe i should qualify this comment by stating that Amazon sellers often sell thousands of products annually -- although it should go without saying that Amazon itself sells tens-of-thousands of products each year -- so the fact that there is only One review associated with this product doesn't necessarily preclude a positive experience with regards to the performance of this product.
To illustrate my point better: in reviewing all reviews for Yose Power on Amazon (which represent dozens of ebike components sold collectively under various names) i found no evidence suggesting poor quality with any component (although none were reviewed extensively). Therefore despite my concerns i think that this ebike battery would probably perform fine assuming proper installation.
That said, if you buy this product you are taking some degree of risk. In contrast to a product like the haibike nduro battery that has been tested thoroughly by multiple reviewers and has many reviews associated with it, i believe you should be aware that the only review associated with this product represents the worst-case-scenario. Since there is only One review and it is a negative review i believe you should be prepared to verify everything as soon as possible after receiving it -- i.e., test its ability to hold charge before installing it onto your motorized bicycle.
Test your battery before installing it onto your ebike by verifying it is able to retain a full charge before mounting it onto your vehicle. Verify the LED indicator displays a full charge status as well as check to see if it functions properly. Also confirm that the connector type matches your existing wiring configuration on your ebike prior to attempting any further testing or installation process. Test your new ebike battery under controlled conditions as soon as possible -- ideally over night or during your workday -- for verification purposes prior to using it for daily transportation or recreational activities.
Additionally, if any issues arise during testing verify that you contact Amazon support for assistance with returning your defective product promptly -- ideally within minutes or at least as soon as possible.
Put this pack next to the rest in our ebike battery comparison table, or dig through the GoMotorbikes blog. Brand info: Yose Power official site.
Check the latest price on Amazon.
Who Is This Battery For?
Riders with a dead XH370-10J or ZL1010-F silver fish pack, mostly. When that holder style breaks, replacement options have dried up, and this is one of the few still listed. DIY builders who measure twice before ordering fit here too. If you want a listing with a proven track record instead, pick a pack with a deep review history and move on.
Frequently Asked Questions
Will this battery fit my bike?
Only if your frame takes an XH370-10J or ZL1010-F style silver fish case and your connector matches the discharge port. Measure the case and compare it against your old pack before ordering. The listing dimensions are the source of truth, not the compatibility claims in the title.
Why does the listing say both 900W and 700W motors?
The title claims 100-900W while the spec bullet says 100W-700W. That is a listing inconsistency, not a feature. Treat 700W as the safe ceiling until the seller clarifies, and size your controller accordingly.
What does the warranty look like?
The listing does not state a clear warranty term. Yose Power handles support through their store, so message them before buying if warranty coverage matters to you. Keep your order number handy either way.
How do I verify capacity when the pack arrives?
Charge it fully, note the charger cutoff, then ride your normal route and watch the gauge. A healthy 17.4Ah pack should feel similar to your old pack for the first several rides. A pack that sags early or cuts off above 20 percent charge is a return candidate.
Is silver fish the same as downtube mounting?
No. Silver fish packs slide into a bracket that mounts on the frame, usually on the seat tube or downtube. A downtube battery like a bottle-style pack bolts directly to the frame bosses. The connectors and holders are not interchangeable, so match your original style.