The SHEWAIHE 48v 20ah Universal Pack provides 960wh of power in a case built to fit most ebikes, at one of the lower prices in the category. You can check current pricing on Amazon to see if it fits your build.
Specifications & Construction
Nominal voltage is 48 volts with 20amp hour (aH) of usable capacity -- providing a total of 960wh. Size of the pack is 14.37" X 5.12" X 3.43". Weight is approximately 10.8 lbs. Those dimensions make it large enough for a 960wh pack.
Construction looks to be high quality as shown in the product photos. It comes packaged in a durable plastic hard shell case with a lockable mounting bracket. The listing states there is a key lock bracket. That is very useful for securing the battery to your ebike and leaving it secured when you go into a store.
Mounting bracket form factor is seat-tube/downtube style. Top mounted discharge connection. In cases where you are replacing a current battery, the discharge connection is located on the top of the new pack, rather than on the bottom like many others.
BMS & Safety Features
40A BMS protects against overcharge, over-discharge, over current, short circuit etc. 960wh at 48v equals 40 amps continuous output. A 1920w peak power output is available from the BMS. Plenty of power to drive 0-1000w motors.
BMS is another important aspect to consider. At this price point, many lower priced packs cut corners on their BMS. Having a BMS with 40amps with multi-mode protection gives you confidence it can handle hills and sudden acceleration without tripping on most 500-750 watt ebikes.
Amazon Customer Reviews
Newer product with zero reviews so far. The main concern with this battery is that no one has reviewed its actual performance, range, or reliability.
Other SHEWAIHE products on Amazon seem to have positive reviews. A few hundred people gave their 36v 15ah pack approximately a 4 star rating. This seems to indicate that the company makes reasonable products. However, since this is a new 48v 20ah product, no one knows how well this particular product will perform.
Lack of reviews means buyers are taking a gamble on quality control, real world range, and behavior of the BMS. Could be a steal or problems that early adopters identify. Price point is the trade off.
If you've bought from SHEWAIHE before, you probably already trust their QC. Their other battery listings have been around for a while with consistent positive feedback. The 36V 15Ah model has been a steady seller, and users there report decent cycle life and no BMS failures. That's a decent track record for an off-brand ebike battery.
The included mounting hardware is a plus you don't always see at this price. The key lock mechanism, mounting bracket, wrenches, and screws are all in the box. Some budget batteries skip the mount entirely or include a cheap plastic tray. SHEWAIHE's bracket looks sturdier than most in photos.
For the money, this is about as cheap as 960Wh gets right now. Whether it lasts 300 cycles or 800 cycles depends on the cell quality, which nobody outside of SHEWAIHE knows yet. If you treat it well -- don't drain it to zero, store it at room temperature, charge before winter storage -- you'll maximize whatever lifespan the cells offer. That kind of care goes a long way with any lithium pack, regardless of brand.
Who Would Buy This Battery?
Those looking to purchase an affordable 48v 20ah pack without paying top dollar. Around two hundred gets you 960wh. Building a budget ebike or replacing a dead battery with limited funds, this battery makes economic sense.
Another useful feature is the lockable mount. Many budget options do not offer a lockable mount option. Securing the battery to your ebike frame is convenient for those times you have to stop quickly.
Compatible with most hub motor and mid-drives, 0-1000w motors. Most commuters will fall into this category. For a typical 500W-750W bike, you've got plenty of headroom. If you want to compare it side by side with similar capacity batteries, check our battery comparison table.
Buyers who desire to know their battery has been tested by many users before they purchase should likely buy a higher priced battery with many reviews. For now, this SHEWAIHE pack is a calculated risk at a very good price.
The 48V 20Ah format is one of the most common ebike battery sizes on the market. That means compatibility issues are rare for most standard builds. If your bike runs 48V and has a seat-tube battery mount, this will likely fit without modifications. The included key lock and mounting bracket work with most downtube-style frames, though you'll want to measure first.
In terms of daily range, 960Wh gives you roughly 35-45 miles of real-world riding on a typical 500W commuter. More with pedal assist, less with full throttle on hills. That's enough for most daily commutes and weekend recreational rides without needing to charge during the day. For most riders, that's a comfortable buffer against range anxiety, and the peace of mind is definitely worth something.
Frequently Asked Questions
Can I use this battery with my ebike?
Designed for use with 48v/0-1000w motors. Dimensions are 14.37" x 5.12" x 3.43". Check your ebike battery compartment size before buying. Mounting bracket secures to seat tube using a key lock system.
Does it come with a charger?
Charger and holder with 2 wrenches and 6 screws are included. Charger amperage rate is unknown from the listing.
What connector type does it use?
Top mounted discharge connector. Connector type information was unavailable from the listing. May require checking pictures or contacting seller.
How long does charging take?
Dependent upon the charger's amperage rating. Typical chargers used in budget ebikes provide 2-3 ampere charge rates, so approximately 7-10 hours to fully charge a 20ah battery.
Will this work with a controller set up at 52v?
No. This is a 48v battery and attempting to operate it through a 52v controller could harm either the controller or the battery. Only use it with a controller setup for 48v operation.
Is it water resistant?
Product description does not mention water resistance. Plastic casing provides some level of water spray protection, but do not submerge it under heavy rain or pressure wash it. When riding in wet conditions, use a protective cover or bag to prevent exposure to moisture.
If you're building a budget ebike and want the best value per Wh, check it out on Amazon. Compare it with other 48V options on our battery comparison table.