Riders with a 5-pin hailong frame slot have a small problem that got bigger this month: the KUSAYLA 48V 20Ah pack that said "5 pin" right in its listing has left Amazon, and most replacement listings make you guess at the pin count from a photo, if they show the base at all.
From the outside the packs look identical. A hailong case has the same outer dimensions whether it carries 4, 5 or 6 contacts, so a battery can match every thumbnail and still never seat in your frame. The difference hides in the contacts, and it usually shows up after the box arrives, which isn't the time you want to find out.
What follows is the recorded KUSAYLA spec sheet, a way to check a replacement's base connector against your frame before you order, and honest numbers on what 960 watt-hours bought in range and charging time. The KUSAYLA name may be gone, but every 5-pin replacement on the market has to pass the same checks.
There's no buy recommendation here, because there's nothing to buy. The recorded specs matter for one reason: they describe the minimum a 5-pin replacement has to match. The pack's 4-pin twin has its own matching guide, built for the other connector.
A 5-pin frame, and one fewer listing that admits it
When the listing was probed in October it returned a page-not-found error, and no KUSAYLA battery has reappeared under the brand since. For a 4-pin buyer that's an inconvenience, because 4-pin replacements are easier to find. For a 5-pin buyer it's worse: many sellers never state the pin count at all, and the ones who do bury it in the eleventh bullet point.
That's the real cost of losing this particular listing. Whatever its other merits, it put the deciding spec in the title, where a buyer could filter on it. The replacement hunt now starts with the question the KUSAYLA title used to answer: does this pack's base actually match my frame slot?
The good news is that the check is mechanical. You need one clear photo of your old battery's base, one look at the female connector inside the frame slot, and a seller who will show you the same two things. Any listing that won't play along is telling you something.
What the recorded specs say
The pack's recorded spec sheet read like this: 48V, 20Ah, 960 watt-hours, a 30A BMS with a 75A peak rating, an XT60 discharge plug, motor compatibility claimed from 0 to 1800W, a charge indicator light, and the shark/hailong case that slides into the frame's battery slot. Treat the 0 to 1800W claim as marketing until the BMS math says otherwise, which is covered below.
One asymmetry is worth knowing. The 4-pin twin's recorded title also listed a USB port, and the 5-pin record doesn't, so don't assume a USB port comes with a 5-pin replacement just because its sibling had one.
Beyond the spec box, nothing was ever captured. No rating, no review count, no buyer comments, so there's nothing to say about how the pack held up on the road, and nobody should pretend otherwise. That record gap is its own argument for checking a replacement's listing history before buying: a pack with no track record asks you to be the test case.
Checking a replacement's base connector
A parts seller who stocks Hailong 01/02/03 cases lists three connector types for the same outer shell: 4 blade contacts, 5 golden round contacts and 6 round contacts. Same case, three different electrical hands. That's why the thumbnail never tells you what you need to know.
Count the contacts, not the case
Photograph your old battery's base straight on, then count the contacts in the frame slot's female connector while the old pack is out.
Five golden round points mean you're shopping for a 5-pin pack, and the seller's photo has to show the same five points in the same layout. If the listing photos never show the base, ask for one before ordering, and walk away if the seller can't produce it.
A wrong pin count doesn't damage anything. The pack simply doesn't seat, the connection doesn't complete, and you're into a return-and-reorder cycle measured in days. Two minutes with a photo of your frame slot prevents all of it.
The discharge plug is a separate question
The base connector mates the battery to the frame. The XT60 plug on the recorded spec is the power output that feeds your controller, and the two are unrelated.
A 5-pin base tells you nothing about the discharge plug, so check that your controller's input connector matches whatever the replacement uses. If it doesn't, an XT60 adapter cable is the standard fix, and it costs little.
What 960Wh delivered
Nine hundred sixty watt-hours is a big tank for a frame-mounted pack, and the category arithmetic says so. em3ev's 48V 20Ah guide puts a 960Wh pack at roughly 30 to 40 miles on throttle alone and 50 to 65 miles on low pedal assist. Those are planning figures, not promises: your speed, your weight and your hills all pull them around.
The weight lands where it matters least. At 10 to 12 pounds, this class of pack sits low and central in a hailong mount, which is a fair part of why the format persists. A rear rack box holding the same energy puts that mass high and behind you, and you feel the difference in corners.
What the 30A BMS actually supports
Here's the arithmetic the 0 to 1800W claim glosses over. Thirty amps at 48V nominal is 1,440W of continuous power. To sustain 1,800W, the pack would need to deliver 37.5A continuously, which is above the 30A continuous rating.
The 75A peak exists for the brief spikes of hard acceleration and steep starts, not for sustained load.
So the honest sustained band for this spec set tops out at 1,440W, with 1800W available only in short bursts. When you weigh a replacement, run the same division on its BMS: continuous amps times 48V tells you what the pack sustains, and everything above that number depends on the peak rating, which lasts seconds.
Frequently Asked Questions
Can I still buy the KUSAYLA 48V 20Ah 5-pin battery? No. Its Amazon listing returns a page-not-found error, and no live KUSAYLA battery has appeared under the brand since. Current 5-pin hailong listings come from other brands.
How do I confirm my frame needs the 5-pin version? Count the contacts in the female connector inside the frame slot, or on the base of your old battery. Five golden round contacts means 5-pin. Four blade contacts means you want the 4-pin guide instead. For a shorter 12Ah take on the same matching problem, the Ransyri 48V 12Ah Hailong rebuild pairs the pin count with a slot-length check.
Does the 5-pin rating tell me anything about the discharge plug? Nothing. The base connector and the XT60 discharge plug are separate concerns, and a replacement can change one without changing the other. Check both against your hardware.
How far will a 960Wh hailong pack take me? Category figures give roughly 30 to 40 miles on throttle and 50 to 65 on low pedal assist. Expect the low end if your routes are hilly or you lean on the throttle.
How long does a 20Ah pack take to charge? About 10 hours from empty on a 2A charger, about 7 on a 3A charger, about 4 on a 5A charger. Check the charger a replacement ships with, and confirm it's the 54.6V output a 48V lithium pack needs. The battery comparison table shows the live packs we track side by side, and more battery reviews cover the ones worth a closer look. Another dead hailong listing from the same tier, the KORNORGE 48V 20Ah, gets the same form-factor matching treatment from the rail end.