LOCKBUS' 48V 20Ah battery is the cheapest option available today. However, when you consider the cost per watt-hour. This battery costs approximately twenty cents per watt hour, while a budget-friendly battery costs more.
What Comes in the Package
In addition to the 48V 20Ah battery, LOCKBUS also provides a 54.6V 3A charger, two keys and a pre-installed XT-60 connector. The overall size of the battery is 14.5 x 3.54 x 4.33 inches. It weighs nine pounds, and it will fit within most frames that accept a Hailong style battery.
The charger is important because it determines how many hours it takes to fully charge the battery.
With a 3A charger, it will take approximately seven hours to completely recharge the battery.
If you use the battery each day on your way to work, then charging it each night is easy.
Additionally, users who switch from using a 2A charger will appreciate the increased speed.
The Lock and the USB Port
An additional security feature is the built-in lock to prevent theft.
Although the lock will not keep someone from cutting off the lock with an angle grinder, it may deter someone with a wrench and thirty minutes at a bike rack from stealing your bike.
The USB port converts the battery into a portable power source.
While it may seem like a novelty at first, it becomes very practical when you find yourself forty miles away from home with a dead smartphone.
It may be just a small detail, but it certainly earns its place.
BMS and Real-world Output
The BMS of 40A permits high-wattage output (approximately 1900 Watts).
When paired with a 1000 Watt motor, this pack will provide plenty of extra power.
On the other hand, pairing this pack with a 1500 Watt motor will require careful management since the pack is not designed to handle peak loads for extended periods of time.
As stated previously, the listed specifications (0 - 1500 Watts) are somewhat misleading.
The pack could technically support a 1500 Watt motor based on raw power alone.
However, the performance of the cells themselves under heavy loads remains unknown.
Therefore, you should not expect the pack to perform well under peak loads (for example: during hill climbs).
Why Buying Cheap Batteries May Not Be your Best Option
One common concern regarding cheap alternatives (like LOCKBUS) is the potential for varying versions of products being sold under multiple ASINs.
Buyers of LOCKBUS have reported receiving different product variations dependent upon inventory levels available in warehouses.
For example, you could receive the version of the battery shown here in the pictures, or an older model without the USB port.
In either event, please inspect your packaging prior to installing the mounting hardware to confirm that you received the correct unit.
Another concern is that there is little evidence of past customer experiences with this particular item.
The existing feedback for LOCKBUS as a brand was generated by reviewers who purchased previous iterations of similar products.
Thus, you are purchasing trust in the brand rather than confidence in this product specifically.
Reliable Range Estimates Based Upon Actual Data
Range estimates depend entirely upon how aggressively you drive your eBike.
Assuming you use a 500-W motor at level-two assist mode, you could potentially achieve up to 40 to 50 miles per charge.
Conversely, using a 1000-W motor at full throttle will likely deplete your charge in as few as 20 to 25 miles.
Cold temperatures reduce both values by ten to fifteen percent.
Therefore, you should evaluate your own commute distance in terms of watt-hours.
To estimate distance traveled versus watt-hours consumed, assume one watt-hour can propel a typical eBike approximately twenty meters under moderate assistance.
Therefore, assuming an average assistance setting (level two), one hundred watt-hours can travel you nineteen kilometers.
Factors That Would Cause Me to Worry. There are three main factors that make me hesitant to recommend this product:
Firstly, LOCKBUS' lack of transparency regarding their cell suppliers.
Brands that disclose the names of their cell manufacturers (e.g., Samsung, LG, EVE) allow customers to research those brands independently and establish credibility.
Grade-A is simply a marketing term -- it is not backed by data.
Secondly, the IP65 rating implies water resistance (splash proofing), not submersion-proofing.
Using high-pressure washes or riding through large amounts of water on your bike will void your warranty.
Thirdly, LOCKBUS states that all sales are final (non-returnable) for reasons related to hazardous materials shipping regulations.
This means you should double-check your battery compartment measurements carefully before placing an order.
One more fitment note before you order. The 14.5 inch length clears most downtube bottle-cage mounts, but frames with a front derailleur that swings close to the pack need an extra inch of clearance. Check that gap with the pack held in place, not just measured on paper. Riders who skip this step discover the interference on the first left turn.
Frequently Asked Questions
Does this battery work with a 1500W motor?
The 40A BMS can deliver the current a 1500W motor draws, but sustained full-throttle runs near the limit will trigger BMS cutoffs sooner than a higher-amp pack would.
Is the charger included?
Yes. The listing includes a 54.6V 3A charger, two keys, and the XT-60 discharge connector.
Can I fly with this battery?
No. A 960Wh lithium pack is far above the 160Wh airline limit, and the listing ships under hazmat rules as non-returnable.
How long does a full charge take?
Around seven hours from empty on the included 3A charger.
What happens if the pack does not fit my frame?
You own it. The listing is non-returnable due to hazardous materials shipping rules, which is why the seller repeats the dimension warning.
The bottom line for anyone cross-shopping this against the rest of the LOCKBUS lineup is that the spec sheet here does the specific job the listing promises, and the pricing sits where the value argument holds. Verify the exact variant on arrival, keep the packaging until you have confirmed the model number, and check fit against your actual setup before the return window closes. Most disappointment in this category traces to fitment assumptions rather than hardware failures, and ten minutes with a tape measure prevents most of it.
Compare it against every other option on the ebike battery comparison table before you decide.
More hands-on gear breakdowns live in our blog.