A 36V 13Ah (468Wh) Hailong downtube battery pack built around quality 18650 cells, designed to bolt onto your frame’s bottle-cage bosses for a clean, secure fit. Supplied with a 30A continuous BMS for cell balancing and over-current, over-charge and over-discharge protection. Compatible with 36V mid-drive and rear-hub conversion kits (Bafang BBS01, 250W front/rear hub kits and similar). Fitted with the standard XT60 discharge connector and a 42V charging port. Ideal for topping up an existing 36V build or replacing a tired pack. Charger sold separately. Always match your battery voltage to your motor/controller before fitting.

Hailong Downtube Battery 36V 13Ah
£179.00
Price includes 20% VAT.
36V 13Ah Hailong-style downtube battery for e-bike conversion kits, with bottle-cage mount and integrated BMS.
About this item
- Battery Capacity: 36v 13ah
- Nominal voltage: 36V
- Capacity: 13Ah (468Wh)
- Cell type: 18650 Li-ion
- BMS: 30A continuous
- Discharge connector: XT60
- Mount: Hailong downtube / bottle-cage bosses
In stock — dispatched within 2–3 working days
Free UK delivery on bikes · 30-day returns
| Brand | |
|---|---|
| Battery Capacity | 36v 13ah |
| Nominal voltage | 36V |
| Capacity | 13Ah (468Wh) |
| Cell type | 18650 Li-ion |
| BMS | 30A continuous |
| Discharge connector | XT60 |
| Mount | Hailong downtube / bottle-cage bosses |
| Charge voltage | 42V |
Manufacturer Warranty
All e-bikes sold by VOLTARC come with the full manufacturer's warranty. Coverage typically includes:
- Frame & Fork — 2–5 years against manufacturing defects
- Motor & Battery — 2 years (capacity guarantee: ≥60 % after 500 charge cycles)
- Electrical components — 1–2 years
- Consumables (brake pads, tyres, chain) — not covered
How to make a claim
Email support@e-bikes.biz with your order number and a description of the issue. We aim to respond within 1 business day.
Extended Support
VOLTARC offers optional 3-year extended cover for an additional fee. Ask us at checkout.
No. EAPC (Electrically Assisted Pedal Cycle) e-bikes are legal on UK roads without a licence, insurance, or registration, provided the motor assists only while pedalling and is limited to 250 W / 15.5 mph.
Range depends on the battery size, rider weight, terrain, and assist level. Check the specific product specification for its stated range; typical figures are 40–120 miles per charge.
Most batteries charge in 3–6 hours from flat using the supplied charger. Fast-charge options (where available) can halve this time.
Yes. Our bikes carry an IP rating (see spec tab) and are designed for UK weather. Avoid submerging the battery or motor. Dry and lightly oil the drivetrain after wet rides.
14-day hassle-free returns on unused bikes in original packaging. For faulty bikes we will arrange a free collection. See our returns page for full details.
Finance is not yet available at checkout — it's planned for a future release. See our Finance page for the latest status and to register your interest.




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