Folding E-Bike Battery Replacement: Does the DCH-009 JD-009FZ Fit?

Short Answer

The DCH-009 (our model No. JD-009FZ) is a 36V / 48V / 52V aluminum-case folding e-bike battery, 420 × 115 × 58 mm, offered from 13Ah to 24.5Ah with a 30A BMS. It is built for bikes that use the DCH-009 shell with a black top cover — the fit is defined by case size and appearance, not by brand: if your original battery is the same 420 × 115 × 58 mm DCH-009 with a 5-pin discharge port, this pack drops in. In practice that covers folding models from ENGWE, Tesgo, RIDSTAR, Lankeleisi, BURCHDA, BEZIOR, MATE, Cyrusher, Wallke, Ginghma, Cmaceweel, Viribus, RANDRIDE, Polarna, Yamee, Jasion, TotGuard and Vitilan — see the verified list below.

What the DCH-009 Platform Actually Is

This is a built-in (in-frame) folding e-bike battery: a slim aluminum case that slides into the folded frame, with the black top cover carrying the key lock, the power switch and the discharge port.

Source: ShunTongDa product page for No.JD-009FZ (DCH-009 folding battery), stdbattery.com.

A note on size: 420 mm is the governing number. When you replace a built-in folding battery, the case must match both the length and the mounting rails — a pack that is 10 mm too long will not slide home, however good its specs are. Measure your original case before ordering, or send us a photo of the original label.

Which Folding E-Bikes Use the DCH-009 Shell?

Our compatibility list is grouped by brand below. Every model here has been cross-checked against the DCH-009 shell and 5-pin port.

ENGWE

RIDSTAR

Tesgo, Lankeleisi and BURCHDA

BEZIOR, MATE, Cyrusher and Wallke

Other verified models

Still unsure? Send us the original battery's length, width and height plus a photo of the label. Three numbers and one photo are usually enough for a same-day confirmation.

Ports, Lock and Power Switch: The Details That Decide Fit

A DCH-009 replacement is not just a box of cells — three mechanical details have to line up with your bike:

1. 5-pin discharge port. The pack's output uses a 5-pin connector that mates with the frame's receiving plate. Count the pins on your original battery and compare the shape; a 4-pin VIVI-style pack will not interchange.
2. Key lock with integrated power switch. The lock doubles as the anti-theft anchor and the main on/off. Turn the key fully to switch the pack on before riding; the key stays in the lock while you ride so it cannot be removed until you stop.
3. Mounting rails and case height. The case slides onto the frame rails and is held by the lock. Rails must be at the same spacing and the 58 mm case depth must clear the folded frame.

If any of the three differs, the pack may still physically enter the frame but will not deliver power or will not lock — which is why we ask for the original case measurements before confirming an order.

What the 30A BMS Means for Your Build

The JD-009FZ ships with a 30A protection board rated for 36V up to 750W and 48V / 52V up to 1000W motors. In plain terms:

• Continuous draw is limited to 30A. On a 48V system that is roughly 1,440W of electrical headroom, comfortably above a 1000W motor's typical controller rating.
• Protections included: short circuit, overcharge, over-discharge and temperature protection. The board uses SEIKO IC protection circuitry.
• Why it matters: a BMS that is undersized for your controller will cut out under acceleration or climb, and repeated tripping shortens pack life. If your bike runs a 1500W+ controller, a 30A pack is not the right match — look for a higher-current platform instead. Our BMS guide explains how to read BMS specs, and our voltage guide covers choosing 36V, 48V or 52V for your motor.

Choosing Capacity: 13Ah to 24.5Ah

The DCH-009 platform spans 13Ah to 24.5Ah in the same case. Higher-capacity versions use higher-capacity cells and more parallel groups inside the same shell, so the outside dimensions do not change.

Range still depends on the whole pack, not the label — a 48V 20Ah pack is 960Wh whether it is built with 18650 or 21700 cells. See our amp-hour and range guide for the calculation, and our 18650 vs 21700 comparison if you want to know what is inside.

Two settings worth knowing before your first ride: charge between 0°C and 45°C, discharge between −20°C and 60°C. Charging a cold-soaked pack is the fastest way to damage it — our winter storage guide covers the cold-weather routine, and our charging best-practice guide explains current and cycle-life trade-offs.

What Arrives in the Box

• DCH-009 battery pack × 1
• Charger × 1
• Keys × 2
• User manual × 1

The pack ships with a one-year warranty, a 15-day return window on unused items, and after-sales service centres in the United Kingdom and Los Angeles. Every unit is appearance- and function-tested before shipment.

Reading Your Original Battery Label

Before you order, the label on your existing pack tells you almost everything. Here is what each line means and why it matters for a DCH-009 replacement.

Two practical tips: photograph the label before you remove the old pack, and keep the key — the lock mechanism is matched to the frame, so the new pack's keys work with the new lock, but knowing your original key position helps you refit confidently.

If the label is worn or missing, measure the case instead. Length is measured along the long axis of the aluminum body (the part that slides into the frame), width across the top face, and depth at the widest point including the black end cap. Round to the nearest millimetre and send the three numbers to us.

Frequently Asked Questions

Will a DCH-009 battery fit my ENGWE Engine Pro?

It fits if your original battery is the same DCH-009 shell — 420 × 115 × 58 mm with a black top cover — and uses the 5-pin discharge port. ENGWE Engine X, Engine Pro, EP-2 PRO and Pro 2.0 all appear on our verified compatibility list. Confirm the length of your original case first, because ENGWE has used more than one case length across model years.

Can I upgrade from 13Ah to 20Ah in the same case?

Yes, when the case is the DCH-009. The platform is offered from 13Ah to 24.5Ah in identical outside dimensions, so a higher-capacity pack fits the same frame. Your motor and controller stay unchanged; you simply get more watt-hours and, in practice, more range.

My bike's brand is not on the list — can I still use it?

Possibly. Compatibility here is determined by the case and port, not the brand name. Measure your original battery (length × width × depth) and photograph the label and the discharge connector, then send both to us. If the case matches the DCH-009, it fits even when the bike brand is not listed.

Is a 30A BMS enough for a 1000W motor?

Yes for the builds this pack is specified for: 36V up to 750W and 48V / 52V up to 1000W. A 30A BMS at 48V gives roughly 1,440W of continuous headroom. If you run a larger controller, choose a pack with a higher continuous current rating.

Do I need a new charger?

Not always. If your existing charger matches the pack's chemistry, full-charge voltage, connector, polarity and permitted charge current, it can be reused. The DCH-009 takes a 2A or 3A standard charge and charges to 54.6V (48V) or 58.8V (52V). If in doubt, use the charger supplied with the pack.

How long does the battery last?

The platform is rated for 1000+ charge cycles. Real-world life depends on how deeply you discharge, how hot the pack runs and how it is stored — the safe-battery checklist covers the habits that matter most.

Check Fitment Before You Order

Send us three things and we will confirm compatibility the same working day:

1. Your bike model and year
2. The length × width × depth of your original battery case
3. A photo of the original label and the discharge connector

That is faster and cheaper than ordering on a guess — and it avoids return shipping on a 4 kg pack.

• Shop the DCH-009 folding e-bike battery (No.JD-009FZ)
• Browse all folding e-bike batteries
• Or contact our team with your battery photo and measurements