This 187 dollar 48V 13ah silver fish battery places the Yasco within the budget category, however, it's not at the lowest cost point. It competes with all of the least expensive 48V packs available today, as well as provides compatibility with the majority of the ebike motor kit types.
If you are building your first ebike or upgrading an older pack, the Yasco is worth a look. It fills a specific niche for budget conscious builders who need a standard silver fish shape that will fit common frame trays without any modifications. For a deeper look at what other batteries are on the market, check out our ebike battery guide.
The Yasco is a conventional silver fish shape battery, which is among the most commonly used battery forms in the DIY ebike community. Therefore, it should fit most of the frame mounted battery trays that are designed specifically for silver fish packs. The Yasco is compatible with Bafang, Tongsheng and most generic motor kits. However, the Yasco does not fit Bosch, Shimano, Yamaha, or Panasonic proprietary systems. Verify your motor type prior to purchase.
specifications and build quality
The 48V 13ah battery equals 624Wh. At 30 cents per wh, it falls directly in line with every other silver fish battery in this range. As far as mileage goes, this will depend heavily upon both your motor type and how aggressively you ride. In general, for a 500W hub motor with moderate assist level, you can anticipate around 20 to 30 miles per charge. Conversely, for a 1kw rider running flat out, 15 to 20 miles per charge would be expected.
Silver fish batteries come in a variety of sizes, but generally mount as a rectangular block either on top of a downtube or in a rear rack. The Yasco uses a slide-in bracket secured via a locking mechanism. The Yasco also comes equipped with a standard discharge connector that will connect to the vast majority of controllers used by Bafang and similar mid-drive kits.
Note: not much specification data exists for this item. The Yasco listing only contains some compatibility information. No dimensions or weight are listed. If you need to know these specifications, please refer to the Amazon listing or contact the vendor.
who would use this battery?
If you are someone that is either new to ebikes or simply working on an ebike project on a budget, the Yasco is a straight forward option for you. Since it is compatible with just about all of the most popular motor kits on the market, whether you are creating a Bafang mid-drive build or a generic hub motor setup, the Yasco is essentially a plug and play solution.
Additionally, due to its design, the silver fish is probably one of the simplest battery designs to attach. You can place it on a rack, strap it to the bike frame or slide it into a designated battery tray. For DIY builders that do not want to commit to having a frame integrated battery, the silver fish offers the most flexibility.
However, if you own a Bosch, Shimano, Yamaha or Panasonic ebike motor system, then this is not your battery. These brands utilize proprietary battery connections that require their branded packs. If you own one of these motors then you will need to find a battery that was made specifically for that particular system.
At 187 dollars, this is nothing more than a simple silver fish pack built to meet a price point. There are no additional features such as USB charging ports, bluetooth connectivity or advanced BMS monitoring capabilities.
As with many other products sold on Amazon, there are currently no customer reviews available for this product. As of now, there are zero ratings or reviews available on Amazon. When purchasing from lesser known vendors, there are risks involved with this approach. With years of experience building custom ebikes, knowing exactly what your requirements are in regards to specifications and connector compatibility, this is definitely acceptable. But for the beginner, when shopping for an ebike battery, a proven vendor would likely be preferable.
value and verdict
The Yasco 48V 13Ah silver fish battery is a no frills option that gets the job done for builders who understand what they are getting into. At 187 dollars, the price per watt hour is reasonable for a standard silver fish pack, though the lack of detailed specs and zero customer reviews means you are buying somewhat blind.
For experienced DIY builders who have worked with silver fish batteries before and know their connector requirements, the Yasco is a perfectly serviceable option. The compatibility with Bafang and Tongsheng kits covers the vast majority of aftermarket ebike builds. If you are assembling a budget build and need a basic 48V pack that will mount to a standard frame tray, this battery is worth considering.
For first time buyers, we generally recommend starting with our battery buying guide to understand what to look for. You can also browse other ebike battery reviews to compare options across different brands and price points before making your final decision.
faqs
does this battery fit my Bafang bbs02 or BBSHD?
The Yasco uses a standard discharge connector that will match up perfectly with Bafang mid-drive kits. It does not fit with proprietary systems including but not limited to Bosch, Shimano, Yamaha and Panasonic. If you are running a Bafang BBS02 or BBSHD, this battery will work with the standard connector setup that comes with those motors.
what kind of connector does this battery use?
The Yasco uses a standard silver fish connector attached to a slide-in mounting bracket. Please reference the Amazon pictures for confirmation of compatibility between your controller and the connector type on the Yasco. Most common ebike controllers will accept this connector without any modification.
how high should i charge this?
To fully charge your 48V li-ion battery, charge to 54.6v. A standard 48V li-ion charger designed for 13S lithium-ion packs will work perfectly with this battery. Do not use a charger that is specifically designed for 36V or 52V packs, as this could damage the battery or create a safety hazard.
can I mount this on a rear rack?
Yes. Silver fish batteries can be mounted on rear racks using a compatible battery tray or bracket. Some DIY mounting may be required depending on your specific rack design. Many builders prefer rack mounting because it keeps the battery weight off the frame and makes removal easier for charging.
how do I check the current price?
Check the latest Amazon listing for current pricing and availability. Prices on these listings can fluctuate, so it is worth checking before you buy.