A 36V 14Ah (504Wh) bottle-style down-tube battery built around genuine Samsung 18650 cells, offering meaningfully more range than entry-level 10Ah Polly packs while keeping the same neat down-tube profile. Bolts to the bottle-cage mounts via a slide-lock base and locks with a key. Includes a 5V USB output, power button with 4-LED fuel gauge and a 20A BMS for over-charge, over-discharge and short-circuit protection. Supplied with mounting base, a 42V 2A charger and two keys. As a bare battery it has no throttle rating — combined with a 250W pedal-assist kit the resulting bike is road-legal in the UK (EAPC); combined with a higher-power or throttle kit it is for off-road / private land use only.

Hailong 36V 14Ah Bottle Battery (Down-Tube, Samsung Cells)
£184.76
Price includes 20% VAT.
Hailong-style 36V 14Ah (504Wh) bottle battery with Samsung cells and USB output. Higher-capacity down-tube pack for everyday 250W pedal-assist conversions.
About this item
- Battery Capacity: 36v 14ah
- Voltage: 36V
- Capacity: 14Ah (504Wh)
- Cell type: Samsung 18650
- Style: Bottle / down-tube
- Mounting: Bottle-cage bolts
- BMS: 20A continuous
In stock — dispatched within 2–3 working days
Free UK delivery on bikes · 30-day returns
| Brand | |
|---|---|
| Battery Capacity | 36v 14ah |
| Voltage | 36V |
| Capacity | 14Ah (504Wh) |
| Cell type | Samsung 18650 |
| Style | Bottle / down-tube |
| Mounting | Bottle-cage bolts |
| BMS | 20A continuous |
| Charger | 42V 2A included |
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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